Canadian providers are picky with devices they allow. They don't wanna get rid of a source of income. You usually do not have this problem in most parts of the world. It's a Canadian thing I guess.
When you're willing to root the device to upload a different modem profile/config to your phone, like from a pixel or so, suddenly your phone will sign in into public's VoLTE network without issues. People here still believe providers do not black/whitelist but as soon you take the configs from a supported phone it works with the very same phone, same IMEI, same imsi. That said.... It's Telus/public who need to change things here.
Now just wait for the people who think it doesn't work that way.
