I contacted Xfinity before and they gave me a number to dial after the 6th dropped call. Did NOT work and it's to the point now I can barely get through a short conversation. I've tried different areas in the home, etc. Extremely frustrated. Price good but it's becoming worthless.
Your problem may be with WiFi Calling not working properly on your phone. Does it work okay without WiFi Calling enabled?
1.) Make sure that you have the latest Xfinity Mobile software on your phone (Xfinity Mobile 41.0).
2.) Make sure that your phones latest software is installed on your phone.
3.) See the latest posts on WiFi Calling.