I may have stumbled on a solution for the video connection problem. At least this worked with my Huawei XT2 Ascend android phone. I set the Data Save in the on mode. Granted unrestricted access to compass and DJI GO 4. On my lunch break I was able to connect for the first time to this device. I connected 10 out of 10 times in various start up orders with no problems and have a crystal clear video feed. I am using a DJI Phantom 4 Pro and the GO 4 Ver 4. I hope this helps others!
Corkster 503
lvl.1
Core User of DJI
