Using satellites as a backup for cell service, and providing coverage in areas where traditional service doesn't cover, just took a big step forward.

However, as The Verge points out, there are some restrictions in the FCC filing. SpaceX cannot yet increase the radio emission power of its Starlink satellites. Companies such as

The T-Mobile license is the first collaboration between a satellite operator and wireless carrier to be approved by the FCC to provide supplemental cell coverage from space. “The Commission recognized that satellite-to-device connectivity can support critical public interest benefits,

Starlink received approval to provide Supplemental Coverage from Space (SCS) within the United States. This means that in areas not covered by terrestrial cellular networks, Starlink satellites can provide service to cell phones.

SpaceX’s Starlink satellite network has earned a groundbreaking Federal Communications Commission (FCC) approval, marking a significant step toward delivering direct-to-phone connectivity for T-Mobile customers.