Originally Posted by KOLIO
Voice/data simultaneously on 3G is a feature of the SPRINT SGS3,SPRINT HTC EVO 4G LTE. (Works flawlessly on the GS3)
The only other phone that I'd heard of that has this capability (ANDROID) is the HTC THUNDERBOLT.
That's for CDMA, and it's called SVDO, it's not common. It should not be uncommon for GSM.
The end target in the USA is VoLTE - simultaneous data with voice over LTE. That requires hardware, firmware and the network. Hesse said at the LTEvo launch that beginning with the LTEvo, Sprint phones would support that as soon as the network is able.
PS - HTC was confused about the glass on the Evo 3D for a few months after its release. I'm not surprised if there's confusion again until they update their specs, it's nothing new for them.