Both my iPhone 4S and iPad 2 are running iOS 5.1. Both are AT&T models. When not connected to Wi-Fi, the network indicator on the iPhone shows 4G while the iPad shows 3G. Does the iPad use a ...
Since upgrading my iPhone 4S to iOS 5.1 (from 5.0.1), the AT&T network status indicator now reads "4G" where it once read "3G". What has changed from the previous version? Does this "4G" mean the ...