Thanks @softech! I just joined PM yesterday. lol I do believe VoLTE is enabled on my Pixel phone automatically as per the June 2022 software update:https://9to5google.com/2022/08/23/google-pixel-volte-roaming-update/
Darn, I just switched to PM to make use of the USA addon, plus other things. I suppose service should be less spotty in metropolitan areas (e.g. downtown seattle, san fran, etc.)?