[Different for every app]
Same idea
need to go in app settings to download maps for offline use
this guide is for Google Maps
First can check if - GPS antenna is connected
confirm have minimum 3 Satellites + Minimum 1 Green Bar
----------------------------------------------------------------------------------------------------------------
After confirming GPS antenna is connected and getting green bars
First Update Google Maps through PlayStore
Press on Display Picture icon
Offline Maps option
Select here -
then can Download Areas you would like to have when Navigating without internet -