I tested the iphone 4's accuracy with the Motion X GPS app, not the drive one but the other one that's used for hiking and biking. Take a look:
http://maps.google.com/?t=p&z=15&ll...gps/host/47db9ed5-beb2-417f-884d-b219afc0f489
While it still struggles on some turns, it is vastly improved over my 3G. Take a look at how accurate it is when I wasn't turning too much. Pretty much spot on.
http://maps.google.com/?t=p&z=15&ll...gps/host/47db9ed5-beb2-417f-884d-b219afc0f489
While it still struggles on some turns, it is vastly improved over my 3G. Take a look at how accurate it is when I wasn't turning too much. Pretty much spot on.