<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019c539a-91ca-780c-a0ed-e81da42109e6,g:f680c6c1-049d-4a37-a66d-521e6f96808b-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="https://xbrl.org/2023/arcrole/summation-item" xlink:type="simple" xlink:href="https://www.xbrl.org/2023/calculation-1.1.xsd#summation-item"/>
  <link:roleRef roleURI="http://www.t-mobile.com/role/CondensedConsolidatedBalanceSheets" xlink:type="simple" xlink:href="tmus-20260331.xsd#CondensedConsolidatedBalanceSheets"/>
  <link:calculationLink xlink:role="http://www.t-mobile.com/role/CondensedConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_019c539a-9580-7e3f-aa18-91ec36bd0487" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrent_019c539a-9580-7e77-b5f4-dcaef3039a37" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019c539a-9580-7e3f-aa18-91ec36bd0487" xlink:to="loc_us-gaap_LiabilitiesNoncurrent_019c539a-9580-7e77-b5f4-dcaef3039a37" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_019c539a-9580-79b8-9d4e-9f506ba7a1c5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019c539a-9580-7e3f-aa18-91ec36bd0487" xlink:to="loc_us-gaap_CommitmentsAndContingencies_019c539a-9580-79b8-9d4e-9f506ba7a1c5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019c539a-9580-7d2e-83f7-9b6b5e907266" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019c539a-9580-7e3f-aa18-91ec36bd0487" xlink:to="loc_us-gaap_StockholdersEquity_019c539a-9580-7d2e-83f7-9b6b5e907266" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_019c539a-9580-7dd5-86f5-da3f0b21c13b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019c539a-9580-7e3f-aa18-91ec36bd0487" xlink:to="loc_us-gaap_LiabilitiesCurrent_019c539a-9580-7dd5-86f5-da3f0b21c13b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019c539a-9580-79fd-a438-4b4a3326a745" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_019c539a-9580-7770-b963-0da0892d5fc2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019c539a-9580-79fd-a438-4b4a3326a745" xlink:to="loc_us-gaap_CommonStockValue_019c539a-9580-7770-b963-0da0892d5fc2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_019c539a-9580-7363-be15-05e358b494f1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapitalCommonStock"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019c539a-9580-79fd-a438-4b4a3326a745" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_019c539a-9580-7363-be15-05e358b494f1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonValue_019c539a-9580-7d9f-8d12-2e53f1d5cb34" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TreasuryStockCommonValue"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019c539a-9580-79fd-a438-4b4a3326a745" xlink:to="loc_us-gaap_TreasuryStockCommonValue_019c539a-9580-7d9f-8d12-2e53f1d5cb34" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019c539a-9580-7b77-8995-428c308a6d58" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019c539a-9580-79fd-a438-4b4a3326a745" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019c539a-9580-7b77-8995-428c308a6d58" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019c539a-9580-7f5d-9e29-a70ee4330d39" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019c539a-9580-79fd-a438-4b4a3326a745" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019c539a-9580-7f5d-9e29-a70ee4330d39" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrent_019c539a-9580-7b44-b59e-314895cdc313" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesNoncurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_019c539a-9580-7b6b-b98e-43a7192dab09" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_019c539a-9580-7b44-b59e-314895cdc313" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_019c539a-9580-7b6b-b98e-43a7192dab09" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_tmus_SaleLeasebackTransactionTowerObligation_019c539a-9580-7685-9eca-7b2cd6fefccd" xlink:href="tmus-20260331.xsd#tmus_SaleLeasebackTransactionTowerObligation"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_019c539a-9580-7b44-b59e-314895cdc313" xlink:to="loc_tmus_SaleLeasebackTransactionTowerObligation_019c539a-9580-7685-9eca-7b2cd6fefccd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_019c539a-9580-71c5-b2ea-1734c95fe7ac" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_019c539a-9580-7b44-b59e-314895cdc313" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_019c539a-9580-71c5-b2ea-1734c95fe7ac" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_019c539a-9580-7fc3-bdaa-117c8fe8fd97" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_019c539a-9580-7b44-b59e-314895cdc313" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_019c539a-9580-7fc3-bdaa-117c8fe8fd97" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_019c539a-9580-74e6-a161-060b079e3cb3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_019c539a-9580-7b44-b59e-314895cdc313" xlink:to="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_019c539a-9580-74e6-a161-060b079e3cb3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_019c539a-9580-78ad-9916-8d3ac4d6c076" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_019c539a-9580-7b44-b59e-314895cdc313" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_019c539a-9580-78ad-9916-8d3ac4d6c076" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_019c539a-9580-774d-b618-8bb1e82d3fd4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseCurrent_019c539a-9580-73b3-a59c-402bf29960a4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PrepaidExpenseCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019c539a-9580-774d-b618-8bb1e82d3fd4" xlink:to="loc_us-gaap_PrepaidExpenseCurrent_019c539a-9580-73b3-a59c-402bf29960a4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_019c539a-9580-7d60-9b2a-d9739abd74f6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019c539a-9580-774d-b618-8bb1e82d3fd4" xlink:to="loc_us-gaap_InventoryNet_019c539a-9580-7d60-9b2a-d9739abd74f6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_019c539a-9580-7858-ba0a-b3ba53d7ec70" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019c539a-9580-774d-b618-8bb1e82d3fd4" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_019c539a-9580-7858-ba0a-b3ba53d7ec70" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019c539a-9580-79d4-9516-549821e6f4aa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019c539a-9580-774d-b618-8bb1e82d3fd4" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019c539a-9580-79d4-9516-549821e6f4aa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesAndLoansReceivableNetCurrent_019c539a-9580-7482-9d11-4ad4acb1a51f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NotesAndLoansReceivableNetCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019c539a-9580-774d-b618-8bb1e82d3fd4" xlink:to="loc_us-gaap_NotesAndLoansReceivableNetCurrent_019c539a-9580-7482-9d11-4ad4acb1a51f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_019c539a-9580-7c1b-b2f1-6e74fb285a99" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssetsCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019c539a-9580-774d-b618-8bb1e82d3fd4" xlink:to="loc_us-gaap_OtherAssetsCurrent_019c539a-9580-7c1b-b2f1-6e74fb285a99" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_019c539a-9580-7a1c-a4f1-b6966136f4f4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_019c539a-9580-7a3d-82b3-94ce625685b8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019c539a-9580-7a1c-a4f1-b6966136f4f4" xlink:to="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_019c539a-9580-7a3d-82b3-94ce625685b8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermBorrowings_019c539a-9580-76cd-813c-ab3fd828e69c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShortTermBorrowings"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019c539a-9580-7a1c-a4f1-b6966136f4f4" xlink:to="loc_us-gaap_ShortTermBorrowings_019c539a-9580-76cd-813c-ab3fd828e69c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_019c539a-9580-7fa0-90de-9c29f798419b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019c539a-9580-7a1c-a4f1-b6966136f4f4" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_019c539a-9580-7fa0-90de-9c29f798419b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_019c539a-9580-7126-9a1d-ed4fb777035c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019c539a-9580-7a1c-a4f1-b6966136f4f4" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_019c539a-9580-7126-9a1d-ed4fb777035c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityCurrent_019c539a-9580-7d4e-8a5c-950b5c125b90" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeaseLiabilityCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019c539a-9580-7a1c-a4f1-b6966136f4f4" xlink:to="loc_us-gaap_FinanceLeaseLiabilityCurrent_019c539a-9580-7d4e-8a5c-950b5c125b90" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_019c539a-9580-7fd5-a360-cbe8c32a4792" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherLiabilitiesCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019c539a-9580-7a1c-a4f1-b6966136f4f4" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent_019c539a-9580-7fd5-a360-cbe8c32a4792" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_019c539a-9580-7fb4-b4e7-d4287d63c2b1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAsset_019c539a-9580-79dd-a38b-235cf07c7906" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeaseRightOfUseAsset"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019c539a-9580-7fb4-b4e7-d4287d63c2b1" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAsset_019c539a-9580-79dd-a38b-235cf07c7906" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_019c539a-9580-7087-be40-f8f1f4ed660b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019c539a-9580-7fb4-b4e7-d4287d63c2b1" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_019c539a-9580-7087-be40-f8f1f4ed660b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_019c539a-9580-7124-af02-75da8b942e1c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019c539a-9580-7fb4-b4e7-d4287d63c2b1" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_019c539a-9580-7124-af02-75da8b942e1c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_019c539a-9580-7d5c-9f3d-fce73e35928c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019c539a-9580-7fb4-b4e7-d4287d63c2b1" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_019c539a-9580-7d5c-9f3d-fce73e35928c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_019c539a-9580-7f82-8424-23a92fe2c3d4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019c539a-9580-7fb4-b4e7-d4287d63c2b1" xlink:to="loc_us-gaap_Goodwill_019c539a-9580-7f82-8424-23a92fe2c3d4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_019c539a-9580-7e42-a84b-23c1b338959d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019c539a-9580-7fb4-b4e7-d4287d63c2b1" xlink:to="loc_us-gaap_AssetsCurrent_019c539a-9580-7e42-a84b-23c1b338959d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019c539a-9580-7162-ad3a-fb91b8583f16" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019c539a-9580-7fb4-b4e7-d4287d63c2b1" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019c539a-9580-7162-ad3a-fb91b8583f16" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedLicenseAgreements_019c539a-9580-7bd2-89b7-fe9d9571b19e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedLicenseAgreements"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019c539a-9580-7fb4-b4e7-d4287d63c2b1" xlink:to="loc_us-gaap_IndefiniteLivedLicenseAgreements_019c539a-9580-7bd2-89b7-fe9d9571b19e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesAndLoansReceivableNetNoncurrent_019c539a-9580-7fac-8542-04a21c1c33e5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NotesAndLoansReceivableNetNoncurrent"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019c539a-9580-7fb4-b4e7-d4287d63c2b1" xlink:to="loc_us-gaap_NotesAndLoansReceivableNetNoncurrent_019c539a-9580-7fac-8542-04a21c1c33e5" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.t-mobile.com/role/CondensedConsolidatedStatementsofComprehensiveIncome" xlink:type="simple" xlink:href="tmus-20260331.xsd#CondensedConsolidatedStatementsofComprehensiveIncome"/>
  <link:calculationLink xlink:role="http://www.t-mobile.com/role/CondensedConsolidatedStatementsofComprehensiveIncome" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019c539a-9580-75de-ac04-0a1917431656" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019c539a-9580-758a-a08c-a37fd7c55958" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019c539a-9580-75de-ac04-0a1917431656" xlink:to="loc_us-gaap_OperatingIncomeLoss_019c539a-9580-758a-a08c-a37fd7c55958" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_019c539a-9580-7bc8-aa91-ef064bd4a322" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019c539a-9580-75de-ac04-0a1917431656" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_019c539a-9580-7bc8-aa91-ef064bd4a322" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_019c539a-9580-714f-98a6-a56d987c627c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostsAndExpenses"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_019c539a-9580-7088-811e-2724c94604fc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_019c539a-9580-714f-98a6-a56d987c627c" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_019c539a-9580-7088-811e-2724c94604fc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019c539a-9580-7605-a42e-a8b9a57e3e52" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_019c539a-9580-714f-98a6-a56d987c627c" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019c539a-9580-7605-a42e-a8b9a57e3e52" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_019c539a-9580-76f3-8568-8a43a84abc0d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_019c539a-9580-714f-98a6-a56d987c627c" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_019c539a-9580-76f3-8568-8a43a84abc0d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019c539a-9580-7f6e-82b2-19a0c3176bfd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019c539a-9580-704f-9ae4-da5fca667a4f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019c539a-9580-7f6e-82b2-19a0c3176bfd" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019c539a-9580-704f-9ae4-da5fca667a4f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019c539a-9580-76bd-8b20-de47c6913aea" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019c539a-9580-7f6e-82b2-19a0c3176bfd" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_019c539a-9580-76bd-8b20-de47c6913aea" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019c539a-9580-76bf-ba5e-eccbe148e80a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_019c539a-9580-70c6-9c73-9f3a1e928f8a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostsAndExpenses"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019c539a-9580-76bf-ba5e-eccbe148e80a" xlink:to="loc_us-gaap_CostsAndExpenses_019c539a-9580-70c6-9c73-9f3a1e928f8a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019c539a-9580-7266-90e3-9216f8b40576" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019c539a-9580-76bf-ba5e-eccbe148e80a" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019c539a-9580-7266-90e3-9216f8b40576" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_019c539a-9580-762c-b7ca-7556a4155426" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_019c539a-9580-78d5-9bc7-a3994c44607b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_019c539a-9580-762c-b7ca-7556a4155426" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_019c539a-9580-78d5-9bc7-a3994c44607b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_019c539a-9580-7ba3-b696-2d563dcf7295" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestIncomeExpenseNonoperatingNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_019c539a-9580-762c-b7ca-7556a4155426" xlink:to="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_019c539a-9580-7ba3-b696-2d563dcf7295" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019c539a-9580-74dc-84fc-3cea20ea5eb9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_019c539a-9580-73ee-824b-6b0f73468f84" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019c539a-9580-74dc-84fc-3cea20ea5eb9" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_019c539a-9580-73ee-824b-6b0f73468f84" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAfterAdjustmentsAndTax_019c539a-9580-7ed4-800c-96ea5f6a4e7a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAfterAdjustmentsAndTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019c539a-9580-74dc-84fc-3cea20ea5eb9" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAfterAdjustmentsAndTax_019c539a-9580-7ed4-800c-96ea5f6a4e7a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax_019c539a-9580-7be4-82c0-aaaa72a7987f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019c539a-9580-74dc-84fc-3cea20ea5eb9" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax_019c539a-9580-7be4-82c0-aaaa72a7987f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_019c539a-9580-7704-9935-1c2f7ad6abe7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019c539a-9580-729d-a745-9debea1fe908" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_019c539a-9580-7704-9935-1c2f7ad6abe7" xlink:to="loc_us-gaap_NetIncomeLoss_019c539a-9580-729d-a745-9debea1fe908" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019c539a-9580-76a1-9666-bf39aa1a5acf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_019c539a-9580-7704-9935-1c2f7ad6abe7" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019c539a-9580-76a1-9666-bf39aa1a5acf" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.t-mobile.com/role/CondensedConsolidatedStatementsofCashFlows" xlink:type="simple" xlink:href="tmus-20260331.xsd#CondensedConsolidatedStatementsofCashFlows"/>
  <link:calculationLink xlink:role="http://www.t-mobile.com/role/CondensedConsolidatedStatementsofCashFlows" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019c539a-9580-7d01-aa05-019e40ca33d8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019c539a-9580-738c-9a7c-a8bcfd1ef383" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019c539a-9580-7d01-aa05-019e40ca33d8" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019c539a-9580-738c-9a7c-a8bcfd1ef383" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019c539a-9580-7bf1-93e9-bc97ef2a9127" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019c539a-9580-7d01-aa05-019e40ca33d8" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019c539a-9580-7bf1-93e9-bc97ef2a9127" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019c539a-9580-78ed-be93-c519421bf0bb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019c539a-9580-7d01-aa05-019e40ca33d8" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019c539a-9580-78ed-be93-c519421bf0bb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019c539a-9580-7764-810e-e1226fe360bb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_019c539a-9580-7625-bc91-bac913a0dbf3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019c539a-9580-7764-810e-e1226fe360bb" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_019c539a-9580-7625-bc91-bac913a0dbf3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireIntangibleAssets_019c539a-9580-790a-ae0c-71a4539e9ff0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireIntangibleAssets"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019c539a-9580-7764-810e-e1226fe360bb" xlink:to="loc_us-gaap_PaymentsToAcquireIntangibleAssets_019c539a-9580-790a-ae0c-71a4539e9ff0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfProductiveAssets_019c539a-9580-7583-9df6-df78b0c9e796" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromSaleOfProductiveAssets"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019c539a-9580-7764-810e-e1226fe360bb" xlink:to="loc_us-gaap_ProceedsFromSaleOfProductiveAssets_019c539a-9580-7583-9df6-df78b0c9e796" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_019c539a-9580-71dd-a392-d19539a5dea2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019c539a-9580-7764-810e-e1226fe360bb" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_019c539a-9580-71dd-a392-d19539a5dea2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireEquityMethodInvestments_019c539a-9580-71ef-83a8-4072cd428f65" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireEquityMethodInvestments"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019c539a-9580-7764-810e-e1226fe360bb" xlink:to="loc_us-gaap_PaymentsToAcquireEquityMethodInvestments_019c539a-9580-71ef-83a8-4072cd428f65" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_019c539a-9580-796e-9887-02c67b25fbaa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019c539a-9580-7764-810e-e1226fe360bb" xlink:to="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_019c539a-9580-796e-9887-02c67b25fbaa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019c539a-9580-71b7-8297-41fae32ee169" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_019c539a-9580-7457-a072-b56001a2e532" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019c539a-9580-71b7-8297-41fae32ee169" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_019c539a-9580-7457-a072-b56001a2e532" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_019c539a-9580-7102-8a10-66a09d65d5bb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019c539a-9580-71b7-8297-41fae32ee169" xlink:to="loc_us-gaap_ShareBasedCompensation_019c539a-9580-7102-8a10-66a09d65d5bb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_019c539a-9580-7d4b-91bd-77e428454cb2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxesAndTaxCredits"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019c539a-9580-71b7-8297-41fae32ee169" xlink:to="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_019c539a-9580-7d4b-91bd-77e428454cb2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_019c539a-9580-7b5e-99f5-1e4f1e64cddd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProvisionForDoubtfulAccounts"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019c539a-9580-71b7-8297-41fae32ee169" xlink:to="loc_us-gaap_ProvisionForDoubtfulAccounts_019c539a-9580-7b5e-99f5-1e4f1e64cddd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019c539a-9580-74e7-a725-05d952bf68ec" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019c539a-9580-71b7-8297-41fae32ee169" xlink:to="loc_us-gaap_NetIncomeLoss_019c539a-9580-74e7-a725-05d952bf68ec" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSale_019c539a-9580-7f7b-bf5f-19109540d02d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSale"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019c539a-9580-71b7-8297-41fae32ee169" xlink:to="loc_us-gaap_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSale_019c539a-9580-7f7b-bf5f-19109540d02d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_019c539a-9580-77d9-95fa-15af8cbd196e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019c539a-9580-71b7-8297-41fae32ee169" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_019c539a-9580-77d9-95fa-15af8cbd196e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInFinanceReceivables_019c539a-9580-7a74-915a-054fdaa07f79" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInFinanceReceivables"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019c539a-9580-71b7-8297-41fae32ee169" xlink:to="loc_us-gaap_IncreaseDecreaseInFinanceReceivables_019c539a-9580-7a74-915a-054fdaa07f79" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_019c539a-9580-7d5c-b7f3-819d460ecaae" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInInventories"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019c539a-9580-71b7-8297-41fae32ee169" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_019c539a-9580-7d5c-b7f3-819d460ecaae" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_tmus_IncreaseDecreaseinOperatingLeaseRightofUseAsset_019c539a-9580-72cf-bdaf-e88e55a71e29" xlink:href="tmus-20260331.xsd#tmus_IncreaseDecreaseinOperatingLeaseRightofUseAsset"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019c539a-9580-71b7-8297-41fae32ee169" xlink:to="loc_tmus_IncreaseDecreaseinOperatingLeaseRightofUseAsset_019c539a-9580-72cf-bdaf-e88e55a71e29" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_019c539a-9580-742c-aab4-33376e631fd4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019c539a-9580-71b7-8297-41fae32ee169" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_019c539a-9580-742c-aab4-33376e631fd4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_019c539a-9580-7309-9966-44b57b9663a0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019c539a-9580-71b7-8297-41fae32ee169" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_019c539a-9580-7309-9966-44b57b9663a0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingLeaseLiability_019c539a-9580-7500-8d83-2b3bb0513541" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOperatingLeaseLiability"/>
    <link:calculationArc order="13" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019c539a-9580-71b7-8297-41fae32ee169" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingLeaseLiability_019c539a-9580-7500-8d83-2b3bb0513541" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_019c539a-9580-7bf4-97fb-f01cc7fa9622" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities"/>
    <link:calculationArc order="14" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019c539a-9580-71b7-8297-41fae32ee169" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_019c539a-9580-7bf4-97fb-f01cc7fa9622" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_019c539a-9580-7107-b1cc-64ee4eda0102" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherOperatingActivitiesCashFlowStatement"/>
    <link:calculationArc order="15" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019c539a-9580-71b7-8297-41fae32ee169" xlink:to="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_019c539a-9580-7107-b1cc-64ee4eda0102" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019c539a-9580-74e6-9e62-c4f7f9536c8d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_tmus_ProceedsFromIssuanceOfLongTermDebtNet_019c539a-9580-7c05-994f-d5cc8b496d60" xlink:href="tmus-20260331.xsd#tmus_ProceedsFromIssuanceOfLongTermDebtNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019c539a-9580-74e6-9e62-c4f7f9536c8d" xlink:to="loc_tmus_ProceedsFromIssuanceOfLongTermDebtNet_019c539a-9580-7c05-994f-d5cc8b496d60" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeasePrincipalPayments_019c539a-9580-7d32-b964-c2764ffbce38" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeasePrincipalPayments"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019c539a-9580-74e6-9e62-c4f7f9536c8d" xlink:to="loc_us-gaap_FinanceLeasePrincipalPayments_019c539a-9580-7d32-b964-c2764ffbce38" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_019c539a-9580-77de-bf28-0e970081bb0e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019c539a-9580-74e6-9e62-c4f7f9536c8d" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_019c539a-9580-77de-bf28-0e970081bb0e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_019c539a-9580-7835-903a-13cca3cfa393" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019c539a-9580-74e6-9e62-c4f7f9536c8d" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_019c539a-9580-7835-903a-13cca3cfa393" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_019c539a-9580-7816-92ec-3cbb216f8fb6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsOfDividendsCommonStock"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019c539a-9580-74e6-9e62-c4f7f9536c8d" xlink:to="loc_us-gaap_PaymentsOfDividendsCommonStock_019c539a-9580-7816-92ec-3cbb216f8fb6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_019c539a-9580-7d0c-ae35-fb3a4ac68a6c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019c539a-9580-74e6-9e62-c4f7f9536c8d" xlink:to="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_019c539a-9580-7d0c-ae35-fb3a4ac68a6c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_019c539a-9580-7cc8-b212-60aa3b7df7cf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019c539a-9580-74e6-9e62-c4f7f9536c8d" xlink:to="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_019c539a-9580-7cc8-b212-60aa3b7df7cf" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.t-mobile.com/role/BusinessCombinationsScheduleofFairValueofAssetsAcquiredandLiabilitiesAssumedDetails" xlink:type="simple" xlink:href="tmus-20260331.xsd#BusinessCombinationsScheduleofFairValueofAssetsAcquiredandLiabilitiesAssumedDetails"/>
  <link:calculationLink xlink:role="http://www.t-mobile.com/role/BusinessCombinationsScheduleofFairValueofAssetsAcquiredandLiabilitiesAssumedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_019d2dce-fd24-78c8-b80d-aafefd8cc9ef" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_019d2dce-fd24-7b64-a270-092170317c3e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_019d2dce-fd24-78c8-b80d-aafefd8cc9ef" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_019d2dce-fd24-7b64-a270-092170317c3e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_019d2dce-fd24-7ffe-a752-302fa93069bc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_019d2dce-fd24-78c8-b80d-aafefd8cc9ef" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_019d2dce-fd24-7ffe-a752-302fa93069bc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_019d2dce-fd24-784e-870a-b22ecfc1a176" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_019d2dce-fd24-78c8-b80d-aafefd8cc9ef" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_019d2dce-fd24-784e-870a-b22ecfc1a176" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_019d2dce-fd24-772a-a9b9-dfc79d2d2804" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_019d2dce-fd24-78c8-b80d-aafefd8cc9ef" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_019d2dce-fd24-772a-a9b9-dfc79d2d2804" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_tmus_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAsset_019d2dce-fd24-771d-b483-f857230c98ab" xlink:href="tmus-20260331.xsd#tmus_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_019d2dce-fd24-78c8-b80d-aafefd8cc9ef" xlink:to="loc_tmus_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAsset_019d2dce-fd24-771d-b483-f857230c98ab" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_019d2dce-fd24-7c02-962d-e23e3e368ed4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_019d2dce-fd24-78c8-b80d-aafefd8cc9ef" xlink:to="loc_us-gaap_Goodwill_019d2dce-fd24-7c02-962d-e23e3e368ed4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_tmus_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherIntangibleAssetsNet_019d2dce-fd24-7d47-b314-557d22bd0083" xlink:href="tmus-20260331.xsd#tmus_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherIntangibleAssetsNet"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_019d2dce-fd24-78c8-b80d-aafefd8cc9ef" xlink:to="loc_tmus_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherIntangibleAssetsNet_019d2dce-fd24-7d47-b314-557d22bd0083" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_019c539a-9628-7b90-aaea-5ab3cf1a07be" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_tmus_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayableAndAccruedLiabilities_019c539a-9628-7707-b998-9c49b0558e46" xlink:href="tmus-20260331.xsd#tmus_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayableAndAccruedLiabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_019c539a-9628-7b90-aaea-5ab3cf1a07be" xlink:to="loc_tmus_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayableAndAccruedLiabilities_019c539a-9628-7707-b998-9c49b0558e46" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue_019c539a-9628-7aca-9f11-89b4e5110909" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_019c539a-9628-7b90-aaea-5ab3cf1a07be" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue_019c539a-9628-7aca-9f11-89b4e5110909" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_tmus_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOperatingLeaseLiability_019c539a-9628-7138-a540-f62f1be19e96" xlink:href="tmus-20260331.xsd#tmus_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOperatingLeaseLiability"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_019c539a-9628-7b90-aaea-5ab3cf1a07be" xlink:to="loc_tmus_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOperatingLeaseLiability_019c539a-9628-7138-a540-f62f1be19e96" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_019c539a-9628-7229-aa7d-61800ee5bcf9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_019c539a-9628-7b90-aaea-5ab3cf1a07be" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_019c539a-9628-7229-aa7d-61800ee5bcf9" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.t-mobile.com/role/ReceivablesandRelatedAllowanceforCreditLossesScheduleofEquipmentInstallmentPlanReceivablesDetails" xlink:type="simple" xlink:href="tmus-20260331.xsd#ReceivablesandRelatedAllowanceforCreditLossesScheduleofEquipmentInstallmentPlanReceivablesDetails"/>
  <link:calculationLink xlink:role="http://www.t-mobile.com/role/ReceivablesandRelatedAllowanceforCreditLossesScheduleofEquipmentInstallmentPlanReceivablesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableNet_019c539a-9628-7676-8607-97a6c31763b3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NotesReceivableNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableWithImputedInterestNetAmount_019c539a-9628-7733-80ec-393d9c4662f2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReceivableWithImputedInterestNetAmount"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NotesReceivableNet_019c539a-9628-7676-8607-97a6c31763b3" xlink:to="loc_us-gaap_ReceivableWithImputedInterestNetAmount_019c539a-9628-7733-80ec-393d9c4662f2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_019c539a-9628-7ccb-b019-798be27a2258" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivableAllowanceForCreditLosses"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NotesReceivableNet_019c539a-9628-7676-8607-97a6c31763b3" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_019c539a-9628-7ccb-b019-798be27a2258" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableWithImputedInterestNetAmount_019c539a-9628-7cc7-8877-7fe602f93938" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReceivableWithImputedInterestNetAmount"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableWithImputedInterestDiscount_019c539a-9628-7992-998c-6a80b4ffa220" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReceivableWithImputedInterestDiscount"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ReceivableWithImputedInterestNetAmount_019c539a-9628-7cc7-8877-7fe602f93938" xlink:to="loc_us-gaap_ReceivableWithImputedInterestDiscount_019c539a-9628-7992-998c-6a80b4ffa220" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableGross_019c539a-9628-75a0-bf7f-06cfca6f5e87" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NotesReceivableGross"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ReceivableWithImputedInterestNetAmount_019c539a-9628-7cc7-8877-7fe602f93938" xlink:to="loc_us-gaap_NotesReceivableGross_019c539a-9628-75a0-bf7f-06cfca6f5e87" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.t-mobile.com/role/ReceivablesandRelatedAllowanceforCreditLossesScheduleofEquipmentInstallmentPlanReceivablesbyCreditCategoryDetails" xlink:type="simple" xlink:href="tmus-20260331.xsd#ReceivablesandRelatedAllowanceforCreditLossesScheduleofEquipmentInstallmentPlanReceivablesbyCreditCategoryDetails"/>
  <link:calculationLink xlink:role="http://www.t-mobile.com/role/ReceivablesandRelatedAllowanceforCreditLossesScheduleofEquipmentInstallmentPlanReceivablesbyCreditCategoryDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableWithImputedInterestNetAmount_019c539a-9628-7e5d-b9b8-72684621c641" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReceivableWithImputedInterestNetAmount"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_019c539a-9628-7011-adab-190066f84804" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ReceivableWithImputedInterestNetAmount_019c539a-9628-7e5d-b9b8-72684621c641" xlink:to="loc_us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_019c539a-9628-7011-adab-190066f84804" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear_019c539a-9628-7221-a14c-2ac0225ed0d8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ReceivableWithImputedInterestNetAmount_019c539a-9628-7e5d-b9b8-72684621c641" xlink:to="loc_us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear_019c539a-9628-7221-a14c-2ac0225ed0d8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_tmus_FinancingReceivableOriginatedMoreThanTwoYearsBeforeCurrentFiscalYear_019c539a-9628-7f8c-a08a-d7b7833b8561" xlink:href="tmus-20260331.xsd#tmus_FinancingReceivableOriginatedMoreThanTwoYearsBeforeCurrentFiscalYear"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ReceivableWithImputedInterestNetAmount_019c539a-9628-7e5d-b9b8-72684621c641" xlink:to="loc_tmus_FinancingReceivableOriginatedMoreThanTwoYearsBeforeCurrentFiscalYear_019c539a-9628-7f8c-a08a-d7b7833b8561" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.t-mobile.com/role/ReceivablesandRelatedAllowanceforCreditLossesScheduleofWriteOffsNetofRecoveriesDetails" xlink:type="simple" xlink:href="tmus-20260331.xsd#ReceivablesandRelatedAllowanceforCreditLossesScheduleofWriteOffsNetofRecoveriesDetails"/>
  <link:calculationLink xlink:role="http://www.t-mobile.com/role/ReceivablesandRelatedAllowanceforCreditLossesScheduleofWriteOffsNetofRecoveriesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_tmus_ReceivableWithWriteOffsNetAmount_019c539a-9628-7325-a48a-a3a84843a10e" xlink:href="tmus-20260331.xsd#tmus_ReceivableWithWriteOffsNetAmount"/>
    <link:loc xlink:type="locator" xlink:label="loc_tmus_FinancingReceivableYearTwoWriteOffsFiscalYearBeforeCurrentFiscalYear_019c539a-9628-72eb-bf44-06d3dfbee265" xlink:href="tmus-20260331.xsd#tmus_FinancingReceivableYearTwoWriteOffsFiscalYearBeforeCurrentFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_tmus_ReceivableWithWriteOffsNetAmount_019c539a-9628-7325-a48a-a3a84843a10e" xlink:to="loc_tmus_FinancingReceivableYearTwoWriteOffsFiscalYearBeforeCurrentFiscalYear_019c539a-9628-72eb-bf44-06d3dfbee265" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_tmus_FinancingReceivableYearOneWriteOffsCurrentFiscalYear_019c539a-9628-7e16-b1bc-557dda7b1724" xlink:href="tmus-20260331.xsd#tmus_FinancingReceivableYearOneWriteOffsCurrentFiscalYear"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_tmus_ReceivableWithWriteOffsNetAmount_019c539a-9628-7325-a48a-a3a84843a10e" xlink:to="loc_tmus_FinancingReceivableYearOneWriteOffsCurrentFiscalYear_019c539a-9628-7e16-b1bc-557dda7b1724" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_tmus_FinancingReceivableYearThreeWriteOffsTwoYearsBeforeCurrentFiscalYear_019c539a-9628-78d6-ae2d-8af1771529cd" xlink:href="tmus-20260331.xsd#tmus_FinancingReceivableYearThreeWriteOffsTwoYearsBeforeCurrentFiscalYear"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_tmus_ReceivableWithWriteOffsNetAmount_019c539a-9628-7325-a48a-a3a84843a10e" xlink:to="loc_tmus_FinancingReceivableYearThreeWriteOffsTwoYearsBeforeCurrentFiscalYear_019c539a-9628-78d6-ae2d-8af1771529cd" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.t-mobile.com/role/DebtScheduleofDebtBalancesandActivityDetails" xlink:type="simple" xlink:href="tmus-20260331.xsd#DebtScheduleofDebtBalancesandActivityDetails"/>
  <link:calculationLink xlink:role="http://www.t-mobile.com/role/DebtScheduleofDebtBalancesandActivityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfDebt_019d2f37-2210-78ef-9d1d-ccefcaa10fe4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromIssuanceOfDebt"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromShortTermDebt_019d2f37-2210-7db1-8cc8-96c690d9e8f1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromShortTermDebt"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ProceedsFromIssuanceOfDebt_019d2f37-2210-78ef-9d1d-ccefcaa10fe4" xlink:to="loc_us-gaap_ProceedsFromShortTermDebt_019d2f37-2210-7db1-8cc8-96c690d9e8f1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt_019d2f37-2210-7ed5-8249-f2357c68c792" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ProceedsFromIssuanceOfDebt_019d2f37-2210-78ef-9d1d-ccefcaa10fe4" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt_019d2f37-2210-7ed5-8249-f2357c68c792" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_019d2f37-2210-7b2e-9173-fea25f751785" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebt"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_019d2f37-2210-7c5c-ac84-15ddee2612aa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_019d2f37-2210-7b2e-9173-fea25f751785" xlink:to="loc_us-gaap_LongTermDebtCurrent_019d2f37-2210-7c5c-ac84-15ddee2612aa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_019d2f37-2210-735e-8542-9d64a4293e3c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_019d2f37-2210-7b2e-9173-fea25f751785" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_019d2f37-2210-735e-8542-9d64a4293e3c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfDebt_019d2f37-2210-794e-a620-41e18c9e4d8c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RepaymentsOfDebt"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_019d2f37-2210-79bf-a569-4e934cd60985" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_RepaymentsOfDebt_019d2f37-2210-794e-a620-41e18c9e4d8c" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_019d2f37-2210-79bf-a569-4e934cd60985" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfShortTermDebt_019d2f37-2210-7cfa-bc25-0ab110662ece" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RepaymentsOfShortTermDebt"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_RepaymentsOfDebt_019d2f37-2210-794e-a620-41e18c9e4d8c" xlink:to="loc_us-gaap_RepaymentsOfShortTermDebt_019d2f37-2210-7cfa-bc25-0ab110662ece" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.t-mobile.com/role/DebtScheduleofMaturitiesofABSNotesDetails" xlink:type="simple" xlink:href="tmus-20260331.xsd#DebtScheduleofMaturitiesofABSNotesDetails"/>
  <link:calculationLink xlink:role="http://www.t-mobile.com/role/DebtScheduleofMaturitiesofABSNotesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_019d2f3f-71da-7e94-be86-7ebef0f8a175" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebt"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear_019d2f3f-71da-7e91-9bbe-053639aea753" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_019d2f3f-71da-7e94-be86-7ebef0f8a175" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear_019d2f3f-71da-7e91-9bbe-053639aea753" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_019d2f3f-71da-7373-8c2b-ac4af40722f0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_019d2f3f-71da-7e94-be86-7ebef0f8a175" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_019d2f3f-71da-7373-8c2b-ac4af40722f0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_019d2f3f-71da-7520-a59f-d68b57b50029" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_019d2f3f-71da-7e94-be86-7ebef0f8a175" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_019d2f3f-71da-7520-a59f-d68b57b50029" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_019d2f3f-71da-7501-afbb-753b7579f312" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_019d2f3f-71da-7e94-be86-7ebef0f8a175" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_019d2f3f-71da-7501-afbb-753b7579f312" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.t-mobile.com/role/SegmentReportingDetails" xlink:type="simple" xlink:href="tmus-20260331.xsd#SegmentReportingDetails"/>
  <link:calculationLink xlink:role="http://www.t-mobile.com/role/SegmentReportingDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019c539a-96e8-7d0a-8dfb-d4bbad153e2e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019c539a-96e8-7fa1-ab15-644eed67c49b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019c539a-96e8-7d0a-8dfb-d4bbad153e2e" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019c539a-96e8-7fa1-ab15-644eed67c49b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_019c539a-96e8-77b4-a95d-775e37a7d3ab" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019c539a-96e8-7d0a-8dfb-d4bbad153e2e" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_019c539a-96e8-77b4-a95d-775e37a7d3ab" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LaborAndRelatedExpense_019c539a-96e8-7947-8981-5b7a1d3ff178" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LaborAndRelatedExpense"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019c539a-96e8-7d0a-8dfb-d4bbad153e2e" xlink:to="loc_us-gaap_LaborAndRelatedExpense_019c539a-96e8-7947-8981-5b7a1d3ff178" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseExpense_019c539a-96e8-75e8-af1b-749026787c92" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseExpense"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019c539a-96e8-7d0a-8dfb-d4bbad153e2e" xlink:to="loc_us-gaap_OperatingLeaseExpense_019c539a-96e8-75e8-af1b-749026787c92" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdvertisingExpense_019c539a-96e8-7280-9e5a-8ae730051ada" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdvertisingExpense"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019c539a-96e8-7d0a-8dfb-d4bbad153e2e" xlink:to="loc_us-gaap_AdvertisingExpense_019c539a-96e8-7280-9e5a-8ae730051ada" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_019c539a-96e8-7329-aa05-9a02e6853196" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProvisionForDoubtfulAccounts"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019c539a-96e8-7d0a-8dfb-d4bbad153e2e" xlink:to="loc_us-gaap_ProvisionForDoubtfulAccounts_019c539a-96e8-7329-aa05-9a02e6853196" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherExpenses_019c539a-96e8-7c90-a048-6b7dd1f62801" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherExpenses"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019c539a-96e8-7d0a-8dfb-d4bbad153e2e" xlink:to="loc_us-gaap_OtherExpenses_019c539a-96e8-7c90-a048-6b7dd1f62801" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_019c539a-96e8-75a2-9481-4be40ac8b329" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019c539a-96e8-7d0a-8dfb-d4bbad153e2e" xlink:to="loc_us-gaap_DepreciationAndAmortization_019c539a-96e8-75a2-9481-4be40ac8b329" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_019c539a-96e8-71e7-8ad7-e67960d8df85" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestIncomeExpenseNonoperatingNet"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019c539a-96e8-7d0a-8dfb-d4bbad153e2e" xlink:to="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_019c539a-96e8-71e7-8ad7-e67960d8df85" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_019c539a-96e8-74f7-baef-bc99962c04e0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019c539a-96e8-7d0a-8dfb-d4bbad153e2e" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_019c539a-96e8-74f7-baef-bc99962c04e0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019c539a-96e8-7919-8114-fde939f651d2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019c539a-96e8-7d0a-8dfb-d4bbad153e2e" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_019c539a-96e8-7919-8114-fde939f651d2" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.t-mobile.com/role/EarningsPerShareScheduleofComputationofBasicandDilutedEarningsPerShareDetails" xlink:type="simple" xlink:href="tmus-20260331.xsd#EarningsPerShareScheduleofComputationofBasicandDilutedEarningsPerShareDetails"/>
  <link:calculationLink xlink:role="http://www.t-mobile.com/role/EarningsPerShareScheduleofComputationofBasicandDilutedEarningsPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019c539a-96e9-7e46-bcbe-6da175983429" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019c539a-96e9-7931-9e01-5913047a6fde" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019c539a-96e9-7e46-bcbe-6da175983429" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019c539a-96e9-7931-9e01-5913047a6fde" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToContingentlyIssuableShares_019c539a-96e9-7eb8-94d9-8e654126fdd5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncrementalCommonSharesAttributableToContingentlyIssuableShares"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019c539a-96e9-7e46-bcbe-6da175983429" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToContingentlyIssuableShares_019c539a-96e9-7eb8-94d9-8e654126fdd5" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.t-mobile.com/role/AdditionalFinancialInformationScheduleofAccountsPayableandAccruedLiabilitiesDetails" xlink:type="simple" xlink:href="tmus-20260331.xsd#AdditionalFinancialInformationScheduleofAccountsPayableandAccruedLiabilitiesDetails"/>
  <link:calculationLink xlink:role="http://www.t-mobile.com/role/AdditionalFinancialInformationScheduleofAccountsPayableandAccruedLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_019c539a-9788-7343-870a-897bb9222729" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableTradeCurrent_019c539a-9788-7dae-ac70-7f64157e76b2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsPayableTradeCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_019c539a-9788-7343-870a-897bb9222729" xlink:to="loc_us-gaap_AccountsPayableTradeCurrent_019c539a-9788-7dae-ac70-7f64157e76b2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_019c539a-9788-7c21-a5be-307b321b952c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_019c539a-9788-7343-870a-897bb9222729" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_019c539a-9788-7c21-a5be-307b321b952c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent_019c539a-9788-76a7-a786-c2f09996dbfa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_019c539a-9788-7343-870a-897bb9222729" xlink:to="loc_us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent_019c539a-9788-76a7-a786-c2f09996dbfa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPayableCurrent_019c539a-9788-7d6f-9dc4-9ca1a60f517c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestPayableCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_019c539a-9788-7343-870a-897bb9222729" xlink:to="loc_us-gaap_InterestPayableCurrent_019c539a-9788-7d6f-9dc4-9ca1a60f517c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_019c539a-9788-7ed3-822a-d3457ad9d942" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAccruedLiabilitiesCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_019c539a-9788-7343-870a-897bb9222729" xlink:to="loc_us-gaap_OtherAccruedLiabilitiesCurrent_019c539a-9788-7ed3-822a-d3457ad9d942" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.t-mobile.com/role/AdditionalFinancialInformationScheduleofCashandCashEquivalentsIncludingRestrictedCashDetails" xlink:type="simple" xlink:href="tmus-20260331.xsd#AdditionalFinancialInformationScheduleofCashandCashEquivalentsIncludingRestrictedCashDetails"/>
  <link:calculationLink xlink:role="http://www.t-mobile.com/role/AdditionalFinancialInformationScheduleofCashandCashEquivalentsIncludingRestrictedCashDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_019c539a-9788-7780-9f6f-ac7885d248e3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019c539a-9788-787c-889b-f12559ce0bdc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_019c539a-9788-7780-9f6f-ac7885d248e3" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019c539a-9788-787c-889b-f12559ce0bdc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashCurrent_019c539a-9788-78b9-949b-19c1062959ae" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedCashCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_019c539a-9788-7780-9f6f-ac7885d248e3" xlink:to="loc_us-gaap_RestrictedCashCurrent_019c539a-9788-78b9-949b-19c1062959ae" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashNoncurrent_019c539a-9788-747b-b1d0-45ef0c8dccc1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedCashNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_019c539a-9788-7780-9f6f-ac7885d248e3" xlink:to="loc_us-gaap_RestrictedCashNoncurrent_019c539a-9788-747b-b1d0-45ef0c8dccc1" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>