wifi calling in Pixel 4a 5g, I can't hear

I have this issue with a Pixel 5a, I had this phone on Verizon briefly and had zero problems with WIFI calling.  It just seems broken with T-Mobile.  Sometimes I even need to turn WIFI off with cellular calls.

Resetting all network settings seems to have restored it for me. that is under the "Reset wi-fi, mobile, and bluetooth" option. Hopefully it will last!

I have this same exact issue.  It happens most days and I have to restart the phone for it to start working again.  Very frustrating

This is also occurring for myself with pixel 5.  If I disconnect wifi, start a call, enable wifi and have the call transition back to a wifi call there is no problem.  This seems to be an initial call setup issue.

@jonpaterson I had wifi-calling turned off.  I still had the issue.  I ended up restarting the phone to fix the issue (temporarily).  This is very annoying.

I have the same issue. I need to know, is it tmobile, or a hardware bug? I like the phone, otherwise! I just want to hear calls!

Same issue here on 4a5g Android 11

Same problem on a onePlus 8 5g tmobile edition.  I'll give the reboot a try.  Resetting network settings sounds promising.  I found this under settings → system → reset options → reset Wi-Fi, mobile & Bluetooth.

I am having the same issue on my Pixel 4a, very frustrating.  I reset the WiFi per above and that worked, we'll see how long.

My wife is having the same problem on a pixel 5.  Poor Tmobile reception at our house.  Wifi calling works on my pixel 2xl just fine.  My wife misses many calls or answers on wifi if it is urgent and goes outside and down the road and turns off wifi calling.

I have reset network settings which temporarily worked but it did not last long.