To al in this thread :
I had an Xfinity Mobile Agent help me last night . I had the same issues - unable to actibvate WiFi Calling on my iPhone (6S). The agent that helped me had me DISCONNECT from the WiFi Network I was on ... FIRST ... then go thru the process of "enabling" WiFi Calling settings on my phone. Then, RECONNECT to my WiFi Network. Worked perfectly ! Thank you !!!
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