I’m in Germany for 2 weeks and then Korea for a week and wanted to know if I can use GPS maps and will it cost me more?
I use HERE we go app offline. I download maps where needed while in Wifi (yes maps all over the world) and plot my courses, turn the HERE to offline and not use Data but get turn by turn instructions. Just don’t get the surfer dude voice as he is corny and monotonous while the other voices are just fine.
You can use Google Maps and Download areas and navigate offline - Android - Google Maps Help
a quick check found Germany and Korea … but you would want to download while on WiFi while your still here.
Enjoy the trip