Wifi calls drop between 2-9 min on Wifi calling, with or without airplane mode. I have a weak signal, so that is not an option.
This started happening on my iPhone7 in December 2020 and continued on my upgraded iPhone XR which I thought would fix the issue. I had no issues prior to December 2020. My SIM has been replaced 3 times with many different configurations between VOLTE off/on with no improvements.
I have 5 other devices that do not use Verizon and they all work perfectly fine during Wifi Calling, two of them being an iPhone XR with AT&T.
Cell provider: Verizon
Model: XR, 14.3
ISP: Xfinity
Wifi: Ubiquity Enterprise
Please help