I've had my P4 now for a week and been flying with my iphone 6...after some initial FW song and dance I got everything working and flying as expected. I purchased a ipad mini 2 cellular, it has the latest 9.3.1 iOS version at first the DJI Go app would not connect to the mini, I followed the advise of the guys here and reloaded the mini's iOS from itunes and that worked (sorta). I am now able to connect to the P4 but now the video output from the camera is black. When I plug in my iphone 6 (also running 9.3.1), video works no problem. Does anyone know whats going on here?