When you are flying with the controller, it is communicating with the drone (it has its own WiFi) and the phone just supplies the GPS, the video and a barometer, if it has one. When you are flying with phone only, airplane mode has to be OFF so the phone can link to the drone via WiFi. Although I generally try to have airplane mode ON when using the SC3 to minimize interference, sometimes I forget and it doesn't seem to matter. I fly in an area with minimal interference, so worse areas may really need the Airplane mode on.
It helps to develop a habit pattern or use a checklist so you know exactly what to expect from the drone.
So to use phone with SC3:
Phone wifi OFF
Bluetooth OFF
Cellular OFF or switch to Airplane mode. There is some differences among phones as to what exactly Airplane mode does. Perhaps you only need to switch to Airplane mode to do all three.
For use with phone only:
WiFi ON (Airplane mode OFF) Now you have to use the phone to find and link to the Anafi with the password the first time.
Bluetooth OFF
The App seems to be smart enough to refuse incoming calls...at least I have never had an incoming call screw up any of my flights in three years.
