Yes, download osmand and the maps for the coutry you will be in. You then only need a gps signal to get directions. Google maps allows downloading of offline areas but seems a little restrictive. http://osmand.net/
The free one works correctly , the paid version gives you more maps. i.e contour maps, multiple countries, different sound (voice files). The free version is IIRC limited to a total of 10 downloads of maps/voice files etc. Choose wisely.
Yes, download osmand and the maps for the coutry you will be in. You then only need a gps signal to get directions. Google maps allows downloading of offline areas but seems a little restrictive.
http://osmand.net/