I just grabbed a pay as you go card from Cingular and tomorrow I plan on trying out UMTS on my new Nokia N90 phone.
Between EDGE, UMTS on GSM, plus GPRS I'm very confused but hope to make some sense out of what works where. It seems the Cingular purchase of AT&T gave them the ability to leap past T-Mobile. While it's not EvDO, the CDMA based platform that Verizon, Sprint and now Helio (formerly SK-Earthlink) use, the features and functions of the N90 made me interested enough to learn more.