Pretty sure this is all just about support for the ground frequency for LTE/5G communications, and has nothing to do with reaching a LEO satellite.
It’s fun to speculate, but it doesn’t make much sense to add satcom to iPhone, and that doesn’t seem to be what the Qualcomm deal is about.
https://investors.globalstar.com/ne...ails/globalstars-band-n53-qualcomms-x65-modem
"Qualcomm's support of Band n53 represents a significant milestone in our efforts to commercialize our spectrum in the US and all other countries where we have or expect to obtain terrestrial authority."
Maybe Globalstar isn’t the provider here, but then it makes even less sense…