Motors wouldn't start

[Losiu37]

There is something wrong with the controller A starting mottors from the phone when I'm doing groundstation

 

[bizrank]

I've noticed that sometimes after an Advanced IMU calibration, the motors won't start. Therefore, I always follow an Advanced calibration with a Basic calibration. That solves my problem immediately. I hope it might solve yours.
Bill

 

[Mako79]

There is something wrong with the controller A starting mottors from the phone when I'm doing groundstation

i get the feeling your Transmitter isnt calibrated properly.
Do it in the RC Assist first. Close it and then calibrate it the Phantom assist. Remember they are seperate applications. And remember to confirm that it has been calibrated by moving the sticks around.