Cannot hear or be heard on Bluetooth only when in a phone call

[joeshmo101]

My Pixel XL can connect to a Bluetooth device with no problems, but whenever I try to use ANY Bluetooth device for a phone call, I neither get audio in or out.

I know that the microphone connects ("OK Google" commands work from Android Auto) and I can hear all media that I play. However, when I answer or make a phone call, I cannot hear the other person and they cannot hear me. I have confirmed that all audio levels (calls, media, notifications, etc.) while connected to Bluetooth have been set to max and are not muted.

I am running Android 10 (QP1A.191005.007.A3) on an unlocked Pixel XL (1st Gen) with a Verizon SIM.

 

[mustang7757]

Do you have calls enabled In Bluetooth settings on the paired device?

'll leave a Link to register so you can communicate here as a guest account you can only post questions but can't reply.

https://forums.androidcentral.com/showthread.php?t=409154

 

[B. Diddy]

Welcome to Android Central! To find the setting mustang7757 is asking about, go to Settings>Bluetooth, then tap the gear icon next to the headset listing. There should be an option for Phone Audio or Phone Calls there -- make sure it's on.

 

[joeshmo101]

It's not disabled. I even tried that as a work-around to allow me to answer a call without having to manually switch from Bluetooth audio back to earpiece audio, but even *that* didn't work

I had no more than a few days where this worked as expected after getting the device. I think it started misbehaving when I had a weird Android Auto crash/disconnect, and it's been at least a year since then.

 

[mustang7757]

It's not disabled. I even tried that as a work-around to allow me to answer a call without having to manually switch from Bluetooth audio back to earpiece audio, but even *that* didn't work

I had no more than a few days where this worked as expected after getting the device. I think it started misbehaving when I had a weird Android Auto crash/disconnect, and it's been at least a year since then.

View attachment 315972

Try clearing data cache and force stop AA

 

[B. Diddy]

Does the problem also happen in Safe Mode? https://support.google.com/pixelphone/answer/2852139?hl=en

 

[Rukbat]

If it still persists, go to Google | Factory Images for Nexus and Pixel Devices, download the ROM for your phone (the marlin December file), unzip the file, open the flash-all file (.bat for Windows, .sh for Mac or Linux) and change the line that starts with

fastboot -w update

to

fastboot update

(it's the last 'fastboot' line in the file). Then flash the ROM. You'll get a completely new ROM, but it won't overwrite any of your apps, files or data. (I do this about every 3rd or 4th update, to get a nice fresh ROM.)