How can view a map of cell towers near to me (to get access to data when I don't have cell reception)?
I work a lot while traveling. Many cafes and coworking spaces don't have the best reception at all tables/desks, so it's best to scope out the area and sit very near to the WiFi Access Point (AP) in order to get the best signal strength and avoid packet loss (especially important for video conferencing).
When I arrive to a new cafe, I usually use the WiFi Analyzer app and walk around the cafe measuring signal strength until I pinpoint the exact location of the WiFi Access Point, then I sit in a table directly under it.
I'd like the solution to the above, but for cell towers.
Scenario: I'm driving through the desert, and I suddenly have to join a video conference. I notice that I have no cellular data, and I'm at a 4-way cross roads: each going North, South, East, and West.
I'm looking for an app that has all this data offline and will show me [a] my location and [b] all the nearby cell towers. Ideally, it should tell me if the cell tower will work with my specific mobile provider's SIM card.
I already use OpenStreetMaps for offline maps, so a plugin for OSM would be ideal.
Is there a way to get an offline map of the cell towers near my current location, so I know where to go for the best possible signal and least possible packet loss?