at&t is a gsm service, gprs (general packet radio service) is the gsm data service.(i think they've phased out gait altoghether already too) at &t's service was always lacking imo, but now that they've merged with cingular good things are to come. at&t was always the 1st with new technology, 1st to bring gsm to the states, 1st to roll 1900band, 1st to roll edge(egprs). cingular has had an overall better network and more dependable service. at&t already had full 3g serices (umts/wcdma) on the board before the merger, i think this will only bring the technology to the customer sooner.