<< i guess its cuz the us networks can't share packets or whatever. no instant messaging from one network to another which really blows, i think they are about to change that though. >>
Actually every CDMA phone made in the last two or three years has had the capability of two way text messaging (SMS).
It's less about what the network cant do, and more about what the carriers are willing to do.
Here in Canada, the three major networks (Rogers AT&T, Bell, Telus) signed an agreement on full two way SMS between networks late last year. It should be only a few more months before it actually works! (hopefully)
My take is that North American carriers really couldnt buy a clue when it comes to what the market really wants. But some are starting to see the light...