First, VoLTE is a protocol using LTE network to make calls, so no matter you call to B party with or without VoLTE, your own side wouldn't drop to 3G aka CS Fallback. I have question for you, why you can make calls from 3G/2G to fixed line?

Currently, Malaysia only 2 operators launch VoLTE, and you already know that.


Secondly, why VoLTE interconnect not possible? Then how you make calls from mobile network to fixed line network? Why previously can achieve on 3G to fixed line and why now not possible for VoLTE interconnect?


Lastly, I used DiGi VoLTE since 25th Oct night until now, no matter who call me or I make call to anyone, I ALWAYS see the 4G sign still there.

I suggest not to activate VoLTE as this will register user in IMS profile. While you are not using VoLTE phone, this will prolong the call setup time.