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 completes its first LTE calls with another carrierVoice over LTE is about to become meaningful.By J. Fingas, 12.30.2015
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
LG's first VoLTE Bluetooth headset revealed: Tone + packs 'high-quality' audio codecBy M. Smith, 09.24.2012
Samsung Galaxy S III LTE to support VoLTE calls, starting with Korea in AugustBy J. Fingas, 08.08.2012
MetroPCS lights up Voice over LTE (VoLTE) services, starts selling LG Connect 4GBy D. Murph, 08.07.2012
Verizon successfully completes first VoLTE call on commercial network in the world, plans 2012 availabilityBy C. Ziegler, 02.09.2011