AT&T said today that it will begin supporting the iPhone 5's wideband audio -- or 'HD Voice' -- feature later this year, reports All Things D. The technology provides for significantly better call quality, when the network and both devices support it. T-Mobile said it will be supporting it at launch on the iPhone 5, with AT&T the second U.S. carrier promising to support HD Voice. Speaking on Monday, AT&T senior VP Kris Rinne said that the carrier will roll-out its own support for the technology later this year as it begins to route voice calling over its LTE network. "HD Voice i
