Important Additional Information
In connection with the proposed transaction, T-Mobile US, Inc.
(T-Mobile) has filed a registration statement on Form S-4 (File No. 333-226435), which was
declared effective by the U.S. Securities and Exchange Commission (the SEC) on October 29, 2018, and which contains a joint consent solicitation statement of T-Mobile and Sprint
Corporation (Sprint), that also constitutes a prospectus of T-Mobile (the joint consent solicitation statement/prospectus), and each party will file other documents regarding
the proposed transaction with the SEC. INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE JOINT CONSENT SOLICITATION STATEMENT/PROSPECTUS AND OTHER RELEVANT DOCUMENTS FILED WITH THE SEC WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN
IMPORTANT INFORMATION. The documents filed by T-Mobile may be obtained free of charge at T-Mobiles website, at www.t-mobile.com, or at the SECs website, at www.sec.gov, or from T-Mobile by requesting them by mail at T-Mobile US, Inc., Investor Relations, 1 Park Avenue, 14th Floor, New York, NY 10016, or by telephone at 212-358-3210.
The documents filed by Sprint may be obtained free of charge at Sprints website, at www.sprint.com, or at the SECs website, at www.sec.gov, or from Sprint by requesting them by mail at Sprint
Corporation, Shareholder Relations, 6200 Sprint Parkway, Mailstop KSOPHF0302-3B679, Overland Park, Kansas 66251, or by telephone at 913-794-1091.
No Offer or Solicitation
This communication shall not
constitute an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under
the securities laws of any such jurisdiction. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the U.S. Securities Act of 1933, as amended.
Cautionary Statement Regarding Forward-Looking Statements
This communication contains certain forward-looking statements concerning T-Mobile, Sprint and the proposed
transaction between T-Mobile and Sprint. All statements other than statements of fact, including information concerning future results, are forward-looking statements. These forward-looking
statements are generally identified by the words anticipate, believe, estimate, expect, intend, may, could or similar expressions. Such forward-looking statements
include, but are not limited to, statements about the benefits of the proposed transaction, including anticipated future financial and operating results, synergies, accretion and growth rates,
T-Mobiles, Sprints and the combined companys plans, objectives, expectations and intentions, and the expected timing of completion of the proposed transaction. There are several factors
which could cause actual plans and results to differ materially from those expressed or implied in forward-looking statements. Such factors include, but are not limited to, the failure to obtain, or delays in obtaining, required regulatory
approvals, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the proposed transaction, or the failure to satisfy any of the other conditions to
the proposed transaction on a timely basis or at all; the occurrence of events that may give rise to a right of one or both of the parties to terminate the business combination agreement; adverse effects on the market price of T-Mobiles or Sprints common stock and on T-Mobiles or Sprints operating results because of a failure to complete the proposed
transaction in the anticipated timeframe or at all; inability to obtain the financing contemplated to be obtained in connection with the proposed transaction on the expected terms or timing or at all; the ability of T-Mobile, Sprint and the combined company to make payments on debt or to repay existing or future indebtedness when due or to comply with the covenants contained therein; adverse changes in the ratings of T-Mobiles or Sprints debt securities or adverse conditions in the credit markets; negative effects of the announcement, pendency or