Originally Posted by wu-wei
For GSM carriers like AT&T and T-Mobile, you need a 3G network connection (and a capable phone, like a Bold) to handle simultaneous data and voice. Not sure what the technology is for CDMA networks like Verizon and Sprint...
There is not a currently deployed 3G CDMA technology that supports simultaneous data and voice. CDMA networks will have this capability when they move to LTE.