I wonder does JENDELA (or involved policy maker) set a deadline on when telcos must complete testing existing VoLTE devices, at least those recent models approved by govt and officially sold in Malaysia within last 3 to 5 years. Digi and Maxis had even tested super old models like iPhone 6s, but some of the more recent ones still not on their list. People won’t know which phones will not be supported if there’s no timeline info.

digi only support volte on phones that they sell/package together at their website