timppu: True, maybe I should give it a chance. Is Navit the best(?) OpenStreetMap car navigator for Android?
Maighstir: I wouldn't know for Android. I try to run SailfishOS-native applications on my Jolla, (almost) only using Android applications if I can't find an equivalent native application.
Hmmm, I've been thinking of buying a Jolla phone, just because...
I tried Navit because on some web page it was claimed to be the most popular Android navigator supporting OSM, but it seems to be crap. Seems kinda "work in progress" with missing features, apparently it hasn't been updated for a couple of years, and on the older phone I don't even get to the "download maps" screen (it just flashes and goes back to empty screen), and on a newer phone it just complains it can't download maps.
Next I am trying MapFactor. It seems much more feature-rich. I tried to download the whole of Europe and some Asian countries' maps with it (using wifi), but for some reason the download gets aborted at some point. Need to try again.