Can't increase in-call volume with Bluetooth

[Jodi Holland]

While I'm connected to my car via Bluetooth, I am not able to adjust the call volume on my phone; it is stuck half way. I disabled absolute volume, but it still cannot be adjusted. When making a call off of Bluetooth, I have no trouble adjusting the volume. This issue is only while connected to Bluetooth. Any other suggestions?

 

[ocnbrze]

it could be your car stereo. does it do it on other bluetooth devices like ear buds or speakers?

 

[Dannydet]

Here try this
https://play.google.com/store/apps/details?id=com.pittvandewitt.wavelet
There are settings for gain that can boost your volume via Bluetooth