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by umeshunni 3741 days ago
> AT&T calls this "HD Audio"

I believe the generic term is VoLTE - https://en.wikipedia.org/wiki/Voice_over_LTE
3 comments
pilsetnieks 3741 days ago
Not really. VoLTE is Voice over LTE[1], which most likely implements HD voice (wideband audio[2],) however, with carrier and device support HD voice could be done over 3G and 2G networks as well.

[1] https://en.wikipedia.org/wiki/Voice_over_LTE

[2] https://en.wikipedia.org/wiki/Wideband_audio

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kristofferR 3741 days ago
VoLTE will actually soon feature Enhanced Voice Services (EVS), or Full-HD Voice, which is a vast improvement over "regular" HD Voice.

EVS is supposedly transparent and full-band. http://spectrum.ieee.org/telecom/standards/full-hd-voice-wil...

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davidf18 3741 days ago
VoLTE is great -- I use it on Verizon. But at least with Verizon it is turned off by default and most people don't seem to turn it on. It is turned off by default because LTE coverage is not as complete as the legacy 3G coverage (yet).

Facebook audio as others have pointed out is great.

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r00fus 3740 days ago
T-Mobile had it from 2013 and earlier (they got the iPhone5 in 2013 and it supported HD Voice). Call quality can be like a clear Skype.
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