We just received an OTA update of the firmware and was disappointed that the promised 5G SA support just don’t show up. Worst of all, VoLTE is also not provisioned. (see screen shot below)
According to Google Pixel website, https://pixel.withgoogle.com/5G/?country=SG&carrier=m1&device=GX7AS
It should work out of the box.
I bet VoLTE won’t work on SIMBA Telecom as well.