I've seen a couple forum posts saying things to the effect that a phone needs both 3g bands to function --- is this true? The reason I ask is that I am waiting for the Nokia N97, but it only runs 900/1900/2100, so no dice if both bands are required. Or is it just that Tmo runs 1700 in some areas and 2100 and others? If the latter is the case, I spend my time between DC, Columbus, and Cincinnati (the latter two do not have 3g yet AFAIK).