Sonim Devices Available for T-Mobile’s Connecting Heroes Program

Industry Leading, Ultra-rugged Devices Now Available at a Discount to T-Mobile First Responder Customers

Austin, Texas (June 23, 2022) Sonim Technologies (Nasdaq: SONM) announced today that its ultra-rugged devices are now available with T-Mobile’s Connecting Heroes program, a 10-year commitment launched in May 2020 to provide free and discounted service and 5G access to first responder agencies — all public and non-profit state and local fire, 911, police and emergency medical services (EMS) departments — saving them up to $7 billion.

“First responders have and always will be a priority for Sonim,” said Peter Liu, CEO, Sonim Technologies. “We’re honored to be a part of T-Mobile’s ongoing commitment to equip and support first responders with reliable, purpose-built devices that stand up to extreme work conditions when they need it most.”

Fire, EMS and law enforcement professionals face some of the most punishing and demanding workdays. Sonim devices were designed to not only survive the same extreme conditions, but to help public safety professionals thrive thanks to the Sonim Rugged Performance Standards, which are based on more than ten years of customer feedback including crucial input from actual public safety workers.

Sonim devices deliver:

In addition, with Sonim SCOUT mobile device management and a 3-year comprehensive warranty, first responders are equipped with the tools they need to do their job efficiently, safely and at a low cost-of-ownership.

For more information about T-Mobile’s Connecting Heroes program, visit www.t-mobile.com/connectingheroes.

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About Sonim

Sonim Technologies is a leading U.S. provider of ultra-rugged mobility solutions designed specifically for task workers physically engaged in their work environments, often in mission-critical roles. The Sonim solution includes ultra-rugged mobile phones, a suite of industrial-grade accessories, and data and workflow applications which are collectively designed to increase worker productivity, communication and safety on the job site. Please visit https://sonimtech.com/.

Important Cautions Regarding Forward-Looking Statements

This release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, as amended. These statements relate to, among other things, the expected timing of the availability of Sonim's XP5plus and XP10 5G smartphones and the expected market demand for these products. These forward-looking statements are based on Sonim's current expectations, estimates and projections about its business and industry, management's beliefs and certain assumptions made by Sonim, all of which are subject to change. Forward-looking statements generally can be identified by the use of forward-looking terminology such as, "future", "believe," "expect," "may," "will," "intend," "estimate," "continue," or similar expressions or the negative of those terms or expressions. Such statements involve risks and uncertainties, which could cause actual results to vary materially from those expressed in or indicated by the forward-looking statements. Factors that may cause actual results to differ materially include, but are not limited to, the following: Sonim's ability to continue as a going concern and improve its liquidity and financial position; the risk that the proposed equity investment in Sonim as disclosed in April 2022 may be be consummated on a timely basis, if at all; Sonim's exploration of strategic or financial alternatives may not result in any transaction or alternative that enhances value; risks related to Sonim's ability to comply with the continued listing standards of the Nasdaq Stock Market and the potential delisting of Sonim's common stock; Sonim's ability to continue to develop solutions to address user needs effectively, including its next generation products; anticipated sales levels of both new and legacy products; Sonim's reliance on its channel partners to generate a substantial majority of its revenues; the limited operating history in Sonim's markets; Sonim's ongoing restructuring and transformation of its business; the variation of Sonim's quarterly results; the lengthy customization and certification processes for Sonim's wireless carries customers; the impact of the COVID-19 pandemic; and the ongoing Securities and Exchange Commission investigation on Sonim's business, as well as the other risk factors described under "Risk Factors" included in Sonim's Annual Report on Form 10-K for the year ended December 31, 2021, and any risk factors contained in subsequent quarterly and annual reports it files with the Securities and Exchange Commission (available at www.sec.gov). Sonim cautions you not to place undue reliance on forward-looking statements, which speak only as of the date hereof. Sonim assumes no obligation to update any forward-looking statements in order to reflect events or circumstances that may arise after the date of this release, except as required by law.

Media Contact

Sonim

Sue Huss

s.huss@sonimtech.com