What Is HD Voice?

As people increasingly abandon voice calling for texting and emailing, audio quality has been a bit neglected. But Sprint's debut of the HD voice-compatible Evo 4G LTE signals that carriers are starting to kick the quality up a notch. The jump from your current phone to HD voice is like switching from dialup to… » 4/05/12 1:00pm 4/05/12 1:00pm