so can you use to GPS if you don't have cell service?? if I'm going overseas and don't have GSM service can i still use GPS?
The answer is sometimes. In some new update I have noticed that google will cache maps. BUT, not for the nav version. So you get the topdown route but not the voice directions with the overhead view. If you dont have the cached map, then you are SOL. I do also have MAPS(-) which has saved the day a few times. You also cant get routes without wifi or service.
hope this helps