Want to try the new Starlink satellite connection on your phone? Sign up to the T-Mobile beta and you can, for free, until July—even if you’re with another carrier.

Mobile said on Sunday it will launch its satellite-to-cell service, powered by SpaceX's Starlink, in July for $15 a month, as the U.S. wireless carrier aims to eliminate mobile dead zones and extend connectivity to remote areas.

T-Mobile Starlink is obviously available to T-Mobile customers, but the carrier said that Verizon and AT&T customers can also use it on their existing phones without switching entirely to T-Mobile. Verizon and AT&T customers will need an unlocked phone with eSIM technology, which lets users activate a cellular plan without a physical SIM card.