Feature Request: AT&T HD Calling and VoLTE

[Jeb]

Please bring AT&T HD Calling/VoLTE support to the Zenfone 6 in the U.S.

[heyoka]

Anders_ASUS

Thanks for your feedback. All I can say is that we're already talking to AT&T

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Can Asus talk with SFR (and the other French carriers?) No volte in France for me

[_jis_]

Ditto with O2 in Czech Republic, please.