T-Mobile US, Inc. (NASDAQ:TMUS) ("T-Mobile") announced today that T-Mobile USA, Inc., its direct wholly-owned subsidiary ("T-Mobile USA" or the "Issuer"), has agreed to sell $1,250,000,000 aggregate principal amount of its 5.125% Senior Notes due 2032 (the "2032 Notes"), $1,000,000,000 aggregate principal amount of its 5.300% Senior Notes due 2035 (the "2035 Notes") and $1,250,000,000 aggregate principal amount of its 5.875% Senior Notes due 2055 (the "2055 Notes," and collectively with the 2032 Notes and the 2035 Notes, the "notes") in a registered public offering.

The offering of the notes is scheduled to close on March 27, 2025, subject to satisfaction of customary closing conditions. T-Mobile USA intends to use the net proceeds from the offering for general corporate purposes, which may include among other things, share repurchases, any dividends declared by T-Mobile's Board of Directors and refinancing of existing indebtedness on an ongoing basis.

Barclays Capital Inc., Deutsche Bank Securities Inc., Morgan Stanley & Co. LLC, UBS Investment Bank, BNP Paribas Securities Corp., Citigroup Global Markets Inc., Commerz Markets LLC, Credit Agricole Securities (USA) Inc., Goldman Sachs & Co. LLC, J.P. Morgan Securities LLC, Mizuho Securities USA LLC, MUFG Securities Americas Inc., RBC Capital Markets, LLC, Santander US Capital Markets LLC, SG Americas Securities, LLC, SMBC Nikko Securities America, Inc., TD Securities (USA) LLC, Truist Securities, Inc., U.S. Bancorp Investments, Inc. and Wells Fargo Securities, LLC are the joint book-running managers for the offering of the notes. ING Financial Markets LLC, NatWest Markets Securities Inc., PNC Capital Markets LLC, Scotia Capital (USA) Inc., R. Seelaus & Co., LLC and Samuel A. Ramirez & Company, Inc. are acting as co-managers.

The Issuer has filed a registration statement (including a prospectus) with the Securities and Exchange Commission ("SEC") for the offering of notes to which this communication relates. Before you invest, you should read the prospectus in that registration statement and the related prospectus supplement and other documents the Issuer has filed with the SEC for more complete information about the Issuer and the offering of notes. You may get these documents for free by visiting EDGAR on the SEC Web site at http://www.sec.gov. Alternatively, the Issuer, any underwriter or any dealer participating in the notes offering will arrange to send you the prospectus and related prospectus supplement if you request it by contacting Barclays Capital Inc., c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717, by telephone at: +1 (888) 603-5847 or by email at Barclaysprospectus@broadridge.com; Deutsche Bank Securities Inc., 1 Columbus Circle, New York, New York 10019, by telephone at +1 (800) 503-4611 or by email at prospectus.CPDG@db.com; Morgan Stanley & Co. LLC, 180 Varick Street, 2nd Floor, New York, NY 10014, by telephone at +1 (866) 718-1649 or by email at Prospectus@morganstanley.com; and UBS Investment Bank, 1285 Avenue of the Americas, New York, New York 10019, Attention: Prospectus Department, by telephone at +1 (833) 481-0269.

This press release shall not constitute an offer to sell or the solicitation of an offer to buy the notes, the related guarantees or any other securities, nor shall it constitute an offer, solicitation or sale in any jurisdiction in which such offer, solicitation or sale is unlawful.

Cautionary Statement Regarding Forward-Looking Statements

This press release contains forward-looking statements that are based on T-Mobile management's current expectations. Such statements include, without limitation, statements about the expected closing of the offering of the notes and statements regarding the intended use of proceeds from the offering of the notes. Such forward-looking statements are subject to certain risks, uncertainties and assumptions, including, without limitation, prevailing market conditions and other factors. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those expected. More information about potential risk factors that could affect T-Mobile and its results is included in T-Mobile's filings with the SEC, which are available at http://www.sec.gov.

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