In less than a week, AT&T will make good on its promise to bring HD Voice calling to network subscribers.
Beginning May 23, the service provider will launch improved call quality on select Voice Over LTE (VoLTE) networks.
The system, which differs from T-Mobile’s approach, is tied to VoLTE, which turns voice calls into Internet data on the new 4G LTE network.
Initially, HD Voice will be made available to Samsung Galaxy S4 Mini owners in parts of Illinois, Indiana, Minnesota, and Wisconsin, and is limited only to calls between HD Voice-capable devices.
The rollout will continue to expand on a market-by-market basis; more compatible phones will also be announced in the future.
“At AT&T, you won’t have to choose between faster data speeds and crystal clear conversations,” the company said. “HD Voice customers can simultaneously talk while surfing the Web at 4G LTE speeds, all on the nation’s most reliable 4G LTE network—it’s the best of both worlds.”
During the 2014 Consumer Electronics Show in Las Vegas, AT&T wireless CEO Ralph de la Vega told the crowd that the the Asus Padfone X would be the first device to support the new calling system. However, today’s announcement made no mention of the phone-tablet combo, which is expected to launch on the network sometime this year.
T-Mobile and Sprint have also begun rolling out their own versions of HD Voice. The Un-carrier got started in early 2013, delivering improved call quality for folks carrying an HTC One S, Samsung Galaxy S III, or Nokia Astound.
And Sprint counts Kansas City, New York, Los Angeles, Chicago, Philadelphia, and Baltimore among its first HD Voice customers, with 10 compatible devices, including the Samsung Galaxy S4, Galaxy Mega, HTC One Max, LG G Flex, and Netgear Zing Mobile Hotspot.