I hope that there are replies to this post, I really want to know whether HD Voice services are enabled in Malaysia? Regardless of networks, as I have found out that news articles reported that Celcom has enabled HD Voice since 2012 and Maxis has a Very Very small note in twitter saying that they have enabled HD Voice in certain areas of Malaysia.

Don't know what HD Voice is? Refer to the YouTube links below

https://www.youtube.com/watch?v=rhGiz-bMsKI T-Mobile USA HD Voice Demo

https://www.youtube.com/watch?v=qR9-LgXEWok AT&T USA HD Voice Demo

Nope, VoLTE is enabling Voice data to transmit over LTE networks as in the current LTE markets, most LTE networks only carry data not voice.

HD Voice is what the YouTube links I provided, please refer to that.

Any proof to support what you say about DiGi having HD Voice?