

The brand-new facility is optimized for 5G and will help the Un-carrier bring 5G to everyone everywhere with New T-Mobile

What’s the news

T-Mobile just opened a brand-new device lab designed to analyze performance and pressure test devices across the Un-carrier’s range of current and future 5G spectrum, as well as all current technologies.

Why it matters

New technology requires new and innovative approaches to testing, and the new lab will help T-Mobile ensure customers have the best experience possible with their new 5G devices.

Who it’s for

Anyone who relies on a mobile device and needs it to perform well every day.

If you build it, 5G innovation will come. T-Mobile (NASDAQ: TMUS) just opened its new device lab, a 20,000 square foot facility built to test smartphones and any other devices that connect to the Un-carrier’s network using any technology available, including 5G, 4G LTE, 3G, LAA, Narrowband IoT and more. The space is made up of more than a dozen testing areas where T-Mobile engineers analyze and fine-tune everything from network signal quality, voice call and sound quality, data throughput and video optimization … to in-depth testing of the latest software, applications and services. Devices are also pressure tested for durability — even the ability to withstand extremes like heat, water, tumbles and drops. The lab also includ es equipment designed specifically to test devices using low-band, mid-band and millimeter wave 5G spectrum — allowing engineers to tap into all of T-Mobile’s current and planned multi-band 5G network to ensure devices in customers’ hands deliver the best experience possible.

The new device lab is smack dab in the middle of T-Mobile’s Launch Pad innovation center in Bellevue, Washington, which also houses the Un-carrier’s network lab and the Tech Experience. The Launch Pad was built to bring device and network quality engineers together to innovate and refine technologies from end-to-end before delivering them to customers. And that’s critical when it comes to 5G with brand new technology in both the network and devices that needs to work together seamlessly for customers.

“5G will unlock SO MANY new capabilities and opportunities for innovation. And with that comes new complexities in delivering the technology to customers,” said Neville Ray, Chief Technology Officer at T-Mobile. “We’ve evolved in this new era of wireless to deliver continuous innovation and the best 5G experience possible — from the network to the devices in their hands — which is why I’m So. Damn. Proud. of this amazing team and cutting-edge lab.”

T-Mobile is in a unique position to roll out broad 5G to customers quickly with its dedicated low-band 600 MHz spectrum, and if regulators approve the merger with Sprint, New T-Mobile will have the critical mid-band spectrum to add greater capacity and supercharge that network. The new device lab is equipped with new, rigorous tests to ensure smartphones, IoT devices and any other connected devices take full advantage of the high-, mid- and low-band spectrum from New T-Mobile 5G, if the merger is approved.

Here are a few of the testing areas in the new device lab:

Sub-6 GHz 5G Radio Performance Chamber

The new Sub-6 GHz 5G Radio Performance Chamber helps engineers maximize T-Mobile’s network performance on mid- and low-band 5G smartphones. Armed with more than 50 antennas at different angles, it measures the level and quality of signal the device can send and receive, with the goal of maximizing how far it can go from a cell site and maintain a quality connection. This is key to ensuring T-Mobile’s nationwide 600 MHz 5G spectrum has the best and biggest coverage possible.

5G Millimeter Wave Antenna Range

The new 5G Antenna Range was built specifically to test 5G on millimeter wave (mmWave) high-band spectrum, which requires extreme precision when connecting to a device due to its very small wavelength. With a mmWave base station at one end of the room and a smartphone at the other, engineers ensure a quality signal is established and maintained as the phone is moving. With advanced features like massive MIMO and beamforming, mmWave antennas require more testing to ensure excellent hardware and software performance.

Multi-band 5G SmartLab Chambers

New multi-band 5G SmartLab Chambers support all of T-Mobile’s current and planned 5G spectrum. In each chamber, engineers put devices through the wringer testing different combinations of spectrum and technology to ensure devices are ready for the different scenarios customers encounter. Being able to simulate complex radio environments in the lab allows T-Mobile to maximize the performance and efficiency of its devices.

Software Performance Lab

The Software Performance Lab contains machines designed and patented by T-Mobile that each test hundreds of functions on every device, simulating a week’s worth of customer usage in just 24 hours. Everything from the keyboard, user interface speeds (how responsive the software is), battery life, music, voice calls, gaming, videos and photos, text messaging, e-mail, web browsing, app downloads and more. Devices must run continuously for 24 hours and perform hundreds of tasks without a single hiccup, stall, freeze or glitch.

Hardware Pressure Testing Room

Inside the Hardware Testing Room, T-Mobile tumbles, scratches, heats, freezes, submerges and drops devices to test their durability. Every device is exposed to extreme temperatures of up to 140 degrees Fahrenheit at 90 percent humidity and as low as zero degrees for one week, submerged in water and tumbled in a meter-long metal box more than 100 times. Engineers run a rough metal edge across each device screen to test scratch resistance. The drop test machine drops devices onto concrete from 14 different angles from up to one meter high. Devices are run through the drop test machine four times and engineers check for hardware reliability as well as performance after each drop utilizing a high-speed camera to inspect exactly how the device behaves when it hits the ground. Ouch!

For more information on T-Mobile’s 5G network and vision, visit https://www.t-mobile.com/coverage/4g-lte-5g-networks.

About T-Mobile US, Inc.

As America’s 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 83.1 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.



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-Mobile’s website, at www.t-mobile.com, or at the SEC’s 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 Sprint’s website, at www.sprint.com, or at the SEC’s 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-Mobile’s, Sprint’s and the combined company’s 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-Mobile’s or Sprint’s common stock and on T-Mobile’s or Sprint’s 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-Mobile’s or Sprint’s debt securities or adverse conditions in the credit markets; negative effects of the announcement, pendency or consummation of the transaction on the market price of T-Mobile’s or Sprint’s common stock and on T-Mobile’s or Sprint’s operating results, including as a result of changes in key customer, supplier, employee or other business relationships; significant transaction costs, including financing costs, and unknown liabilities; failure to realize the expected benefits and synergies of the proposed transaction in the expected timeframes or at all; costs or difficulties related to the integration of Sprint’s network and operations into T-Mobile; the risk of litigation or regulatory actions, including the antitrust litigation brought by the attorneys general of certain states and the District of Columbia; the inability of T-Mobile, Sprint or the combined company to retain and hire key personnel; the risk that certain contractual restrictions contained in the business combination agreement during the pendency of the proposed transaction could adversely affect T-Mobile’s or Sprint’s ability to pursue business opportunities or strategic transactions; effects of changes in the regulatory environment in which T-Mobile and Sprint operate; changes in global, political, economic, business, competitive and market conditions; changes in tax and other laws and regulations; and other risks and uncertainties detailed in the Form S-4, as well as in T-Mobile’s Annual Report on Form 10-K for the fiscal year ended December 31, 2018 and in its subsequent reports on Form 10-Q, including in the sections thereof captioned “Risk Factors” and “Cautionary Statement Regarding Forward-Looking Statements,” as well as in its subsequent reports on Form 8-K, all of which are filed with the SEC and available at www.sec.gov and www.t-mobile.com. Forward-looking statements are based on current expectations and assumptions, which are subject to risks and uncertainties that may cause actual results to differ materially from those expressed in or implied by such forward-looking statements. Given these risks and uncertainties, persons reading this communication are cautioned not to place undue reliance on such forward-looking statements. T-Mobile assumes no obligation to update or revise the information contained in this communication (whether as a result of new information, future events or otherwise), except as required by applicable law.