There's something called 'Enhanced HD Voice' and EE supports itIt only works on the iPhone 8 and 8 Plus right now. By J. Rigg, 09.22.2017
AT&T service prevents scam calls from reaching your phoneCall Protect aims to stop fraud in its tracks.By J. Fingas, 12.20.2016
Verizon's next-gen voice service still planned for this year, will come with video callingBy B. Molen, 05.20.2014
AT&T set to beat Verizon by deploying high-definition calls over LTE this monthBy B. Molen, 05.01.2014
Verizon expanding San Francisco Innovation Center, currently working on cross-carrier HD Voice supportBy D. Murph, 04.23.2013
10Hands-on with T-Mobile's HD Voice, Tap Tag app for NFC-ready Android phonesBy J. Fingas, 01.08.2013
19Urban Hello introduces bizarrely attractive home phone via Kickstarter, we go eyes-onBy B. Gilbert, 01.06.2013
Orange begins first HD Voice calls between countries, decides clarity knows no bordersBy J. Fingas, 10.22.2012
LG's first VoLTE Bluetooth headset revealed: Tone + packs 'high-quality' audio codecBy M. Smith, 09.24.2012