Does it actually never connect with the antenna disconnected? Most wireless receiving devices I’ve used will generally still work a bit with no antenna.
The screen shows a no signal symbol. I seriously doubt that a cell protocol could lock with just an exposed coax. The truly paranoid could stuff a piece of foil in the coax connector to short it to ground.
In the case of starlink, it's completely useless without the phased array antenna because the signals are highly directional.
Subaru Starlink is not the same as SpaceX Starlink.
Well that's highly confusing. I'm surprised there wasn't a trademark dispute.
Wrong Starlink. Subaru's is cellular based, not space.