I am currently having that issue. I contacted Customer support and they had me try the toggle of airplane mode, reset network settings, and pull the sim and shut down the phone. They ended up supposedly creating a case on the issue. It appears they do not realize just how wide spread the issue is or they do not care. So, far it is not a deal breaker I am in a really good coverage area so not having Wifi calling will not kill me but just like 5g I would like all the features of my phone to work. It is obvious that they don't have much support for BYOD.