Question, say that I travel with an reset telephone, can you be forced to "install" it, complete setup and enter account information so it syncs it with your icloud/google/microsoft acocunt?
the issue is: "do you want to cross this border or not?". If you want to cross, unless it's your country, you have to comply with everything, without any oversight or appeal. You're outside of every single Constitutional protection, in an international zone.