Both AST and Starlink are reporting speeds of around 10 Mbit/s. Those are not like the service Globalstar is providing to Apple phones for just emergency texts. https://uk.pcmag.com/networking/151288/spacexs-cellular-starlink-hits-17mbps-download-speed-to-android-phone From: David Lang To: Eugene Y Chang Cc: Frantisek Borsik , Dave Taht via Starlink Subject: Re: [Starlink] SpaceX/Starlink says it's ready for a fall satellite-to-cell service with T-Mobile Message-ID: Content-Type: text/plain; charset="iso8859-7"; Format="flowed" This is a fallback that will only be if there is no other coverage, and will be a poor data rate. I would expect that the impact to the phone battery would be less than the phone continually searching for a tower Also, SpaceX has pushed back, according to them this isn't observed interference with their signals, instead they reconfigured a satellite to the direct-to-phone frequencies and were able to detect them we'll see what the real story is.