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Sonim announces availability of PTT-centric phone XP5plus at Southern Linc

November 1, 2023

Rugged User Equipment

Sonim Technologies Inc. announced the availability of the versatile XP5plus phone that combines cellular with 2-way radio functionality at Southern Linc, the wireless subsidiary of Southern Company (NYSE: SO). Known for their reliability and superior performance on Southern Linc’s mission-critical CriticalLinc™ LTE network, Sonim’s ultra-rugged phones have long been the go-to choice for Southern Linc’s government, utility, and business customers. These customers operate in demanding environments where secure, high-quality, and reliable communication tools are essential.   

“We’re pleased to further deepen our commitment to Southern Linc by introducing the XP5plus phone, further cementing our shared dedication to equipping their customers with the dependable tools they need to carry out their tasks safely and efficiently,” said Dyan Kaplan, SVP of Sales at Sonim. “As more government and business customers seek ultra-reliable mobile solutions from US-based OEMs, Sonim continues to rise to the challenge, delivering purpose-built devices that meet the highest standards of durability, reliability, and functionality. Our XP5plus phone is a prime example of our commitment to providing top-tier communication tools for those operating in demanding environments.”  

The XP5plus: 2-way communication in an ultra-rugged phone   

Building on the legacy of the widely used XP5s, the XP5plus offers an improved PTT experience, making it an essential tool for Southern Linc’s customers who rely heavily on PTT communications.


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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.

We specialize in workforce-critical communication and connectivity tools for industrial enterprises and public sector agencies including end customers in construction, energy and utility, hospitality, logistics, manufacturing, public safety and transportation.

Our solutions fall into three main categories: (1) ultra-rugged mobile devices, (2) industrial-grade accessories and (3) cloud-based software and application services.

The company is headquartered in San Diego, California and offers its solutions through the world’s leading mobile carriers.