P3P has been faultless never a single problem. Last flight 2 weeks ago was perfect. Everything stored in a case and hasn't been moved so no knocks. I am using a very old version of DJI Go never updated anything. Went to fly today lovely weather. Controller powered up fine. Phantom powered up fine. DJI Go not connecting to the camera. Spent ages fiddling around nothing. Tried 2 different leads nothing. Tried my new S7 Edge still nothing. Turned the P3 off and found the transmitter wouldnt power down. Return to home button was making all the right noises etc. Still couldnt power down the transmitter. Turned the P3 back on with brother holding it above his head. All controls working fine. P3 starts fine gimbal levels out and all flight controls working. I think maybe the USB port on the controller isn't working properly. The new version of DJI GO on my S7 Edge just says Inspire1 it doesnt seem to see it as a Phantom 3 even. Any ideas??? Transmitter seems to power off ok ish now just takes a while longer than usual.