Okay after the prior update I kept getting a notification to activate wifi calling. Diamond eventually helped me out so I could shut this down. Well now it's back again after the most recent update G955USQS5CRF5 on July 12, 2018. Samsung Galaxy S8+. I have tried what Diamond said do on prior update to shut this off but this time it doesn't work. When I go to enable HD Voice and Video Calling it wants to turn on data. It didn't do this on the prior update. This is getting aggravating.