A. If your unit is stuck on Loading maps screen and isn't fixed by restarting the unit.
Then you car try to clearing cache for the VMS 3DX app, steps are as follows:
1. Turn on the device
2. Go to the settings menu
3. Go to Apps & Notifications
4. Press See all apps
5. Find and select VMS 3DX app from the list
6. Go to storage and cache
7. Press Clear Cache option
8. Restart the VMS 3DX unit