Has anyone noticed the differences in using the two maps in terms of location accuracy? Specifically with GPS off. I don't expect either app to be extremely accurate in finding my location with GPS off, but what's odd is that Google Maps put's me about .25 miles WNW of my actual location while AT&T Maps put's my location .25 ENE of my actual location. You would think that the operating system determines the location and provides the app of that information, but that doesn't seem to be the case (since the two maps are showing different locations). Can you guys post your findings - GPS off.