Had HD Voice in midwest for months already
I have to say, the voice quality of Sprint's HD voice is awesome when talking to another Sprint phone. I've been able to enjoy this since about last October so far and the quality is excellent. It sounds like a VoIP call, much higher bandwidth call with better voice on both ends. Nice to see they rolled it out nationwide now. Now I just need AT&T to catch up with their network so my work phone can have that capability. Also the carriers should have cross-carrier compatibility.