hmmm... interesting... if that's the case, the only thing I could think of why Cingular do not have WiFi on the phone is because they do not provide Hotspots like T-mobile does.
But than again, AT&T do have Hot Spots in limited areas and soon Cingular name will change to AT&T.
(Please don't ask about what's the deal between the name changes of AT&T and Cingular. It's too complicated to explain. If you need the answers, go to HowardForums: Your Mobile Phone Community & Resource