The beta trial will be free until July, after which it will be included in T-Mobile's premium Go5G Next plan at no additional charge. Once the service officially launches this summer, it can be added to any other plan for $15 a month.
This initiative could significantly change the landscape of mobile connectivity, merging traditional cell networks with satellite technology to ensure coverage everywhere on the planet.
T-Mobile mentioned that 500,000 square miles of the U.S. that are currently out of reach for cell towers can now stay connected.
During the beta phase, users will have access to text services via satellite, with voice and data features set to roll out later, as announced during the Super Bowl on Sunday.
Customers who join the trial will receive a 33% discount when the service officially launches, according to the wireless carrier.
This service could enhance T-Mobile's competitive position, as its efforts to expand coverage in smaller markets and rural areas have led to impressive net phone additions in the fourth quarter.
"This is something that nobody else in the U.S. has done, and one of the big distinctive things this network has is that it works across almost all smartphones from the last four years," Mike Katz, president of marketing, strategy and products, in a statement to Reuters.
T-Mobile has been collaborating closely with Apple and Google to ensure that this experience is seamlessly integrated into their operating systems, making it the default satellite system for both brands, Katz added.
The carrier is making the T-Mobile Starlink service available to all wireless users, including those with rival companies like AT&T and Verizon, without requiring them to switch.