So there's Bluewalker 3 which uses a big antenna to achieve communications with unmodified cell phones, and then Elon claiming that regular Starlink satellites will be able to do the same thing without that ginormous antenna. How does that work? Both are at roughly similar altitudes, BW3 just slightly higher.
SpaceX is going for text messaging, AST SpaceMobile wishes to offer cellular broadband. This means it is probably designed for a higher bandwidth on cellular frequencies. Beyond that, bigger antennas mean better signal quality, so a better coverage. Also, Starlink seems to be using an order of magnitude more satellites: AST SpaceMobile is planning a 243-satellite constellation, while Starlink currently has 3000+ sate…
Wow, I was unaware that Elon already brought that amount of equipment into space!