In December, SpaceX's Falcon 9 launch sent 20 satellites into orbit to support this venture between T-Mobile and Starlink. More importantly, Starlink states its new communication service is open for more than just consumers as it extends a hand to "any" telecom company.

On Monday, the telecom company shared that it has opened registration for a Starlink beta program. All T-Mobile customers can register to join the beta program and test out the satellite messaging feature. But spaces are limited, and T-Mobile is prioritizing first responder individuals and organizations, said the announcement.

Testing will be free for post-paid customers.