I am new to the Mini 4 Pro and have saved a couple of waypoint flights on the RC 2 controller that I wish to execute next week. The RC 2 is hooked up to my home wi-fi which allowed me to select my waypoints via the map, however when I will go out and complete the saved flight route, does the RC 2 still need access to the internet. I know I can do it via my iPhone, but just curious as to whether this would be a absolute necessity to complete the flight. Thanks.