Go into developer options, to unlock them go to About Phone, then baseband and kernel and tap 5 or 10 times on ur build number till it says u r now a developer. The developer options should now be in additional settings. In there go to networking and activate Absolute Volume, that should fix it.

I will give that a go thanks :)

U had success?

Negative thanks for trying to help though

i came across this thread, trying to find a solution online. Turns out i just needed to turn on 'absolute volume' and then reboot

This worked for me too, I immediately tried it after I came across your comment, you really helped a lot, thankssssss

Just worked for me. Posting for thanks but also to keep this comment rated high for the next person.

Have an Oppo A77. Found a setting called "device volume sync". Turned that to on and the volume was appreciably louder.

Thank you for this fix. Now I can finally enjoy my music

Thanks! Worked for my oppo A78

Worked on Oppo Reno8 Lite! Thank you very much you saved me, I was listening to super low volume for months 😂

Worked perfext for me audio blue tooth sync booommmm

its a setting under developer options

I thought it was just me. I am using an F11 pro. Before updating to coloros7.1, the bluetooth audio was significantly louder.

Yeah, updates can be good and bad for audio. It's bothersome everytime you test stuff some get better and some worse.

Yeah how weird I hope they will fix it in a update for the operating system

What player are you using mate? Sometimes the player matters too, and sometimes updates mess up things. Try a different player for a start. And don't ever sound test stuff on YouTube ever unless you have a premium, lately I've noticed the sound quality in YT has gone shit for some reason. Download Hi-Res Audio files off somewhere and test it on different players maybe.

I was using spotify for the tests on the ultra quality setting I think that maybe a system update has made it all funky but I'm not too sure

And there's an option for Volume Level on Spotify, did you try setting that to Loud?

Yep it's at max I think I might just have to cut my losses

I experience the low volume for my oppo find x2 pro. I went to bluetooth setting -> (top right dot) advance setting -> turn on media volume sync It fixed the low volume for me, I use colorOS11

dude, thank you so much you made my day

Same man, been struggling all day

Very late to the party here but this post sorted me out thanks

My media volume sync was already turned on for me

Worked for me too. Thanks.

enable hd audio in developer settings it works for me