Hello, first time poster here. I am traveling around Southeast Asia for the next four months and I want to bring my new P3A along. I was wondering how I can fly in other countries if I don't have an international cellular data plan for my iPhone. Can I fly with my phone on airplane mode? Can I fly with just the controller and no smartphone attached? Will the live feed still work? Please don't worry about the local government rules in the countries I will be visiting, I can take care of looking that up on google. Please also feel free to add any information that might help me flying in other countries. Thanks!