<SEC-DOCUMENT>0001283699-21-000105.txt : 20210525
<SEC-HEADER>0001283699-21-000105.hdr.sgml : 20210525
<ACCEPTANCE-DATETIME>20210525161403
ACCESSION NUMBER:		0001283699-21-000105
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210523
FILED AS OF DATE:		20210525
DATE AS OF CHANGE:		20210525

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			King Deeanne
		CENTRAL INDEX KEY:			0001808243

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33409
		FILM NUMBER:		21960753

	MAIL ADDRESS:	
		STREET 1:		C/O T-MOBILE US, INC.
		STREET 2:		12920 SE 38TH STREET
		CITY:			BELLEVUE
		STATE:			WA
		ZIP:			98006

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			T-Mobile US, Inc.
		CENTRAL INDEX KEY:			0001283699
		STANDARD INDUSTRIAL CLASSIFICATION:	RADIO TELEPHONE COMMUNICATIONS [4812]
		IRS NUMBER:				200836269
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		12920 SE 38TH STREET
		CITY:			BELLEVUE
		STATE:			WA
		ZIP:			98006
		BUSINESS PHONE:		800-318-9270

	MAIL ADDRESS:	
		STREET 1:		12920 SE 38TH STREET
		CITY:			BELLEVUE
		STATE:			WA
		ZIP:			98006

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	METROPCS COMMUNICATIONS INC
		DATE OF NAME CHANGE:	20040315
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_162197358626366.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-05-23</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001283699</issuerCik>
        <issuerName>T-Mobile US, Inc.</issuerName>
        <issuerTradingSymbol>TMUS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001808243</rptOwnerCik>
            <rptOwnerName>King Deeanne</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O T-MOBILE US, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>12920 SE 38TH STREET</rptOwnerStreet2>
            <rptOwnerCity>BELLEVUE</rptOwnerCity>
            <rptOwnerState>WA</rptOwnerState>
            <rptOwnerZipCode>98006</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP, Human Resources</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-05-23</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>5307</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>47742</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-05-23</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2788</value>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>136.61</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>44954</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Represents performance-based restricted stock units earned under the 2015 Sprint Omnibus Plan, as amended (the &quot;Plan&quot;) that vested on May 23, 2021 subject to the terms of the Plan and such award.</footnote>
        <footnote id="F2">Represents shares withheld for payment of taxes on vesting of restricted stock units and performance-based restricted stock units; not an open market transaction.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Frederick Williams, Attorney-in-Fact</signatureName>
        <signatureDate>2021-05-25</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
