T-Mobile and Jio Achieve World’s First 5G Standalone Roaming

Supported by Syniverse’s global mediation platform, enabling seamless cross-border 5G

T-Mobile and Jio made wireless history today, achieving the world's first 5G Standalone (SA) roaming connection, enabled through interoperability with Syniverse. It's proof that a truly seamless next-generation network experience isn't just a promise — it's here, setting a new benchmark for what cross-border 5G should feel like, everywhere.

This enables T-Mobile customers to experience true 5G SA roaming while traveling internationally — a first anywhere in the world. 5G SA roaming delivers faster speeds, lower latency and more reliable connections, paving the way for transformative applications in IoT, real-time communications and immersive technologies that depend on consistent, high-performance global connectivity.

This achievement was made possible by Syniverse's connectivity platform, which ensures secure, seamless interconnection between networks and helps accelerate global adoption of next-generation roaming.

"This is a monumental step for global wireless, and T-Mobile is proud to lead it," said Ankur Kapoor, Chief Network Officer at T-Mobile. "We started this journey back in 2020, laying the groundwork for a 5G Standalone future — and today, we're continuing that leadership with Jio India as a partner on a global stage. Leave one country, land in another, and your 5G experience is just as seamless — whether you're streaming, sharing travel reels or running business apps. That's the breakthrough power of this technology."

“This is a transformational milestone and far more than just roaming — it’s about what becomes possible when two leading 5G Standalone networks work together. T-Mobile and Jio are laying the foundation for a new generation of cross-network capabilities and services, from differentiated consumer and enterprise experiences to AI-enabled services, leveraging the unique capabilities of 5G Standalone. This is the future of 5G SA: seamless, interoperable, and built to unlock new value,” said Mark Yarkosky, Head International Network, Partnership and Services, Jio.

“Syniverse is proud to help enable this industry-first 5G Standalone roaming milestone, demonstrating how secure interworking and advanced mediation can make next-generation roaming commercially viable at a global level,” said John Wick, Chief Product Officer of Syniverse. “Built on long-standing partnerships across the mobile ecosystem, our home-grown SEPP capabilities and proven platform help operators test, navigate, and launch 5G SA roaming with confidence. We are able to support all 5G-ready customers from validation through production as more operators come on board.”

This collaboration shows how T-Mobile is driving the future of connectivity beyond borders, building the foundation for new services and experiences powered by the most advanced global networks.