2G iphone, can u explain how it's google maps usage is different from 3G iphone? I might buy a used 2G iphone for cheap but i use google maps alot, how is the funtionality different for the 3G iphone. With the new 2.2 software, in google maps , does the 2G iphone have the little blue-ish tracking ball that locates your position on google maps? I saw this on a friend 3G iphone , does to 2G do this also? How does the 2G iphone google map functionality differ from the 3G iphone?