AT&T senior VP Kris Rinne announced the carrier will support HD Voice later this year. Speaking at the VentureBeat Mobile Summit, Rinne also said AT&T will start to work on “advanced LTE,” which reduces interference, among other things. T-Mobile was the first to announce improved phone call quality through HD Voice support for the iPhone 5 in the United States — it will begin to offer the iPhone 5 April 12. The specific date…
