SpaceX's Starlink is moving in on phone and internet service, which is bad news for Verizon, AT&T, and T-Mobile and good news for anyone stuck in a dead zone.

• Starlink is positioning itself to take over markets where cable, TV, and internet service are weak.
• The big three US carriers are nervous about what satellite service could become.
• Normal cell networks still drop out in pockets of Florida, Los Angeles, and Dallas.
• Starlink already delivers fast internet on private jets, with calls and video meetings working mid-flight.

Outlook: Expect Starlink to keep pushing into mobile and home internet, squeezing the traditional carriers on coverage.