In the race to develop satellite services, AT&T and Verizon are both hailing recent tests that show they can power video calls on US phones using next-gen satellites from AST SpaceMobile. The video calls tap into AST’s BlueBird satellites, which the Texas-based startup launched into space back in September. The five satellites have since been orbiting Earth, with the goal of operating as cell towers in space that can connect unmodified phones on the ground. Although AST is still working for appr