Tmobile is actually the one that will be partnering with Starlink. Apple is partnering with GlobalStar which actually really sucks (currently) and will have pretty much the worst satellite network for at least a few years. If they really got their shit together and started launching satellites ASAP they could probably improve a lot in a year or two.

Also GlobalStar only covers the continental US and a little farther......

Depending on how strict they are you might be able to smuggle in a Garmin inReach and connect to Iridium now (or an actual Iridium or Inmarsat satellite phone or modem)