We were pretty impressed with our demo of HD Voice on the HTC EVO 4G LTE earlier in the year, but are still waiting for the feature's launch to test it in real situations. We may not have to wait much longer, though, because according to Phone Scoop, Sprint is aiming to roll out the service by the end of 2012. The carrier's Network Vision architecture upgrade is progressing nicely, a necessity for implementing clearer conversat
