[IRANNOTICE] T-Mobile US, Inc. SEC Filing

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T-Mobile US, Inc.

12920 SE 38th Street, Bellevue, WA 98006

October 23, 2025

VIA EDGAR

U.S. Securities and Exchange Commission

100 F Street, N.E.

Washington, D.C. 20594

Re:       Notice of disclosure filed in Exchange Act Quarterly Report under Section 219 of the Iran Threat Reduction and Syria Human Rights Act of 2012 and Section 13(r) of the Exchange Act

Ladies and Gentlemen:

Pursuant to Section 219 of the Iran Threat Reduction and Syria Human Rights Act of 2012 and Section 13(r) of the Securities Exchange Act of 1934, as amended, notice is hereby provided that T-Mobile US, Inc. has made disclosure pursuant to such provisions in its Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2025, which was filed with the Securities and Exchange Commission on October 23, 2025.

Respectfully submitted,

T-Mobile US, Inc.

By:						/s/ Peter Osvaldik
						Peter Osvaldik Executive Vice President and Chief Financial Officer