AT&T already announced plans to turn on HD Voice, aka, wideband audio support, later this year through a carrier update for iPhone users in the US. Today, iTweakiOS announced an update for one of its hacked carrier profiles that it claims will allow AT&T users to access HD Voice, as well as the recently announced CMAS government and Amber alert update, ahead of a full roll out of the feature later this year.
Apple has actually supported the feature since the iPhone 5 launched last fall, but only around 20 international carriers currently support the feature. Unfortunately, the HD Voice feature, even with the hack, won’t yet work for all users, as AT&T is still currently in the process of rolling out support:
Sprint and Verizon haven’t announced plans to roll out support for wideband audio, but earlier this year T-Mobile became the first to officially support the feature with its launch of the iPhone 5. Check out our hands on of the feature from T-Mobile’s event back in March.
