T-Mobile and AT&T today announced a partnership in which customers on both carriers can roam freely across either network in New York or New Jersey, following the wake of the devastating hurricane and superstorm Sandy that recently passed through. The roaming agreement is in “the heavily impacted areas and where capacity is available and for subscribers with a compatible device,” T-Mobile and AT&T said in a joint statement.

“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,” the carriers explained in a release. “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.”

It’s unclear how long the roaming agreement is in place, but we presume it will last until the networks are both fully functional in New York and New Jersey. Hopefully this helps everyone stay in touch easier.