Plenty of SFOS users run the OS on Sony devices, where it has official support, I don't see a major problem. T-Mobile seems to have no problem with them. There

Plenty of SFOS users run the OS on Sony devices, where it has official support, I don't see a major problem. T-Mobile seems to have no problem with them. There are of course caveats, but with a larger userbase things would get ironed out. Still, in the Sailfish forum there are American users that employ their devices as daily drivers.