The Raine Group LLC is acting as lead financial advisor to Sprint. J.P. Morgan is also acting as a financial
advisor to Sprint. Morrison & Foerster LLP is providing legal counsel to Sprint and SoftBank.
About T-Mobile
As Americas Un-carrier, T-Mobile US, Inc. (NASDAQ: TMUS)
is redefining the way consumers and businesses buy wireless services through leading product and service innovation. Our advanced nationwide 4G LTE network delivers outstanding wireless experiences to 86.0 million customers who are unwilling to
compromise on quality and value. Based in Bellevue, Washington, T-Mobile US provides services through its subsidiaries and operates its flagship
brands, T-Mobile and Metro by T-Mobile. For more information, please visit http://www.t-mobile.com.
About Sprint:
Sprint (NYSE: S) is a communications
services company that creates more and better ways to connect its customers to the things they care about most. Sprint served 54.2 million connections as of December 31, 2019 and is widely recognized for developing, engineering
and deploying innovative technologies, including the first wireless 4G service from a national carrier in the United States; leading no-contract brands including Virgin Mobile USA, Boost Mobile, and
Assurance Wireless; instant national and international push-to-talk capabilities; and a global Tier 1 Internet backbone. Today, Sprints legacy of
innovation and service continues with an increased investment to dramatically improve coverage, reliability, and speed across its nationwide network and commitment to launching a 5G mobile network in the U.S. You can learn more and visit Sprint at
www.sprint.com or www.facebook.com/sprint and www.twitter.com/sprint.
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