Hi, I have a 32gig 3GS, and in my area, we don't have 3G service. 
I'm considering getting Navigon, because I really need a GPS and this whole GPS-on-the-iPhone deal sounds great. But will it be too slow using the EDGE network? I know it has a built-in GPS but I don't know if it uses the AT&T network to get the instructions.
Thanks
I'm considering getting Navigon, because I really need a GPS and this whole GPS-on-the-iPhone deal sounds great. But will it be too slow using the EDGE network? I know it has a built-in GPS but I don't know if it uses the AT&T network to get the instructions.
Thanks