T-Mobile’s CES announcement for HD Voice was a happy surprise and now T-Mobile is making an effort to get the word out. With a thirty-second YouTube clip, T-Mobile is showing the before and after voice quality using HD Voice. The difference is obviously noticeable given that the advertisement is straight from T-Mobile, but there’s little question that HD Voice won’t make at least a small improvement on the Galaxy S III, HTC One S and Nokia Astound devices. Remember, both parties on a phone call must be using HD Voice ready devices to use the service.

HD Voice, the latest feature on the T-Mobile network , dramatically improves in-call voice quality for customers with capable smartphones. To experience HD Voice, both parties on the call must use capable T-Mobile 4G smartphones such as the HTC One S, Nokia Astound and Samsung Galaxy S III on T-Mobile’s HD Voice-enabled nationwide network.

YouTube