Phantom 4 last update + Nexus 7 2013 (Android v6.0.1 the last version for this hardware).
Bug when connected or not to the remote with Phantom & remote On or Off:
Open DD , confirm usb access
Logo DD and after white screen …Nothing More !!! Failed.
Nothing see in your troubleshooting steps
Check also uninstall DD & install … But Bugs still alive.
The switch process works fine between DJI GO and DD and also Pix4D as I wanted to confirm usb switch works fine (Only one apps open /usb)
Nexus 7 is fine & Phantom 4 amazing
Please find quickly a solution as I’m not alone
This Bug reported by Askander Sept 16 “white screen…”