As for gps? just use a droid phone and osmand. Once you get everything updated and set it requires no data plan. Magic Earth is a great alternative but is highly suited to searching addresses (needs data or simply a hotspot). Magic earth will work without a data plan also and is also free.
I run mobian phosh from a march iso and use the phone as a phone. All the raidios work great and hotspot too. The gps chip works great but the fact it's battery sucks and it's slow makes it a bad decision for a gps device. The real problem is the software. It just aint there yet to be of any great service while driving unless someone else holds the phone and acts as a copilot who's good with small print. There is some guy who got his gps and software to give decent directions but to be honest osman from fdroid is a highly polished piece of kit. Getting directions to an address it aint so good at hardly ever, that's why I installed magic earth along side it. That thing has never failed on any address I've ever given it (plus it's as good as osmand and will run in a 3d mode which osmand won't) It found every single one. I just 'share' the coordinates to my clipboard and then ultimately pass them back to osmand or my contacts so it's handy next time and I don't need to search or have a data plan.
I run mobian phosh from a march iso and use the phone as a phone. All the raidios work great and hotspot too. The gps chip works great but the fact it's battery sucks and it's slow makes it a bad decision for a gps device. The real problem is the software. It just aint there yet to be of any great service while driving unless someone else holds the phone and acts as a copilot who's good with small print. There is some guy who got his gps and software to give decent directions but to be honest osman from fdroid is a highly polished piece of kit. Getting directions to an address it aint so good at hardly ever, that's why I installed magic earth along side it. That thing has never failed on any address I've ever given it (plus it's as good as osmand and will run in a 3d mode which osmand won't) It found every single one. I just 'share' the coordinates to my clipboard and then ultimately pass them back to osmand or my contacts so it's handy next time and I don't need to search or have a data plan.