I use the Google nav app on my BB Curve. It doesn't have GPS coordinates, and it uses cell phone towers to pinpoint your location. So, if you use "your location" as a starting point, it will say something like, "turn down country road 19..." and three more steps until it gets you to the interstate or major highway. In the context of a 1400 mile car trip, that's okay. On a bike ride, it could be a hindrance.

On the other hand, you can just look at the map it shows to figure out where you are. That has its drawbacks, too, when, in rural Oklahoma, the street signs don't match the street names on the map, but you *know* you were in the right place two blocks ago.

Karen