Since DuduOS v3.5 I have noticed a much lower speaker volume of BT calls, I have to increase the volume to 28 or so to get what I previously got at a volume of 12. In v3.6 beta, it's the same low volume as in v3.5. I suppose this has been done to lower the default as some users complained about the caller getting echo, but I never had that problem.
Is there a setting anywhere to raise the default BT caller volume to get it more in line with streaming apps etc, i.e. to get it back to what it used to be in v3.0?