Exact same issue here.
Mavic Mini (All firmware updated)
DJI FLY APP (latest update, reinstalled trying to solve issue to no avail)
Phone: LG G7 ThinQ (Top Spec Flagship). Andrioid 9.xx (Nearly latest OS)
Tablet: 2018 iPad 9.7" (Maps WORKS on this device)
In the DJI Fly App, the small map...