AT&T And T-Mobile Agree To Share Networks In The Wake Of Hurricane Sandy
AT&T and T-Mobile customers will be able to place calls just as they normally would, but their calls will be carried by whichever network is most operational in their area. This will be seamless for AT&T and T-Mobile customers with no change to their current rate plans or service agreements even if the phone indicates the device is attached to the other carrier's network.
T-Mobile and AT&T both utilize network technology based on GSM and UMTS standards, which allows for this sharing of voice and data traffic. Neither carrier has said when the deal will cease, but hopefully they'll hold out long enough for most folks to find normalcy.