I've had the Note 8 since before WiFi calling was enabled on Xfinity Mobile. It's been terrible the whole time but now that I'm home more, I'm looking for a fix. I see this is an issue for many customers. Comcast, please address this issue. Calls constantly drop. It seems to occur when moving around the house. So, I'm guessing it's an issue handing off the call from WiFi to cell and back? I...