Is your feature request related to a problem? Please describe.
The Locations Map shows the missing tiles icon when the map tiles are unavailable.
This is the default and expected behavior, but for usability, some map tiles should be available.
Describe the solution you'd like
If there is storage space available on the device, the firmware should come bundled with some initial zoom levels of tiles - at least level 1, 2, 3, but possibly more, depending on the storage available.
These bundled map tiles should be ignored if an SD card provides them.
Describe alternatives you've considered
An alternative is that they are downloaded on-the-fly and cached, see #217.
Additional context