Nokia n770 "an internet tablet", had maemo mapper which used the Google Map data. It worked well, the main problem is that n770 had no WAN chip. You could pre

Nokia n770 "an internet tablet", had maemo mapper which used the Google Map data. It worked well, the main problem is that n770 had no WAN chip. You could preload map tiles though. This was before the iphone, and years before google maps would work offline.