I've had Xfinity for almost two years and have been using WiFi calling in Airplane mode fine until recently. Have AT&T Wireless plan. I am on calls for hours at a time and never a dropped call until 2 weeks ago. Tried resetting phone network settings, reboot router and Xfinity box. Even got new phone and still calls dropped after 10 min.
I suspect something was done to my Xfinity box or line 2 weeks ago that caused this to start.
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