With their embracing of prepaid plans combined with inexpensive smart phones could really open up anytime information access for people who cannot otherwise afford it.
"T-Mobile’s network currently only supports GSM-compatible phones. Only 3G phones that support the 1700-MHz band are compatible (not all 3G phones support it). If you own a 3G phone that does not support the 1700-MHz band, it will operate at 2G (EDGE) speeds on our network."
Do you mean that data rates with Tmobile will be slow? It seems to be supported otherwise?
Stuck at 2G most would probably use the data very sparingly and be stuck using whatever wifi they find.