[HELP] Can't hear phone calls on bluetooth

matrixino

Senior Member
Sep 30, 2010
165
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Canosa di Puglia
Hello,
As title says suddenly I can't hear anything through my car BT (Audi) or BT headphones. It was working fine till around a week ago.
I can hear media\music just fine (for example Spotify) in both headphones and car speakers.
Bluetooth is connected correctly as usual, but I can't hear people in calls and they can't hear me too.
In car I can normally start a call with steering wheel buttons, just I don't hear anything. If I change audio output on phone to speaker or phone I ear them, if I rechange to BT silent again.
I tried another phone in my car and it's working fine.
I tried my phone in another car and same problem occurs, so it's some setting in my phone (even if I don't remember changing anything since it was working).
I'm on stock OOS 9.0.5 + Magisk.

Things I've tried by googling A LOT of forums:
1) Resetting network\BT data from Settings>Reset
2) Clearing storage and cache for the Bluetooth system app
3) Manually deleting paired devices from both my car and my phone and re-add them.
4) Played with the BT audio codec\bitrate\version\etc options in developers menu without luck.
5) Tried disabling google now, ok google feature.
6) Tried disabling device discovery for Bluetooth.

Things I take as last chance: changing kernel, clean flash.
Any suggestions?