Visited gomo website this morning & read that they have started offering VoLTE & WiFi calling to all their subscribers having a compatible handset.
FAQ on there site.
I searched OzBargain for a post related to this item and found none & hence thought of posting it.
Interesting, that there is another optus reseller providing VoLTE & Wifi Calling.
I've been looking into the same thing and found Moose Mobile also provide this.
another optus reseller
Gomo is actually Optus owned just like Amaysim. That said pretty sure their service is built on the Optus reseller platform not the full Optus one.
About time. $25 per month for 18gb isn't really competitive however so I won't be joining.
Interestingly at the start of the year (when I was a customer) I was paid to answer a survey for them that was full of questions about 5G and which companies 5G I was considering. I answered it brutally and said without even VoLTE I had no interest in remaining a customer and they needed to get that sorted before anyone would consider a 5G product of theirs.
They still haven't launched 5G which is surprising to me. When I get iPhone 13 I'll definitely be looking for a 5G provider.