Just upgraded from my note 8 to the Note 10. I noticed that when using a bluetooth device, the volume is no where near as loud even with both devices turned all the way up. Any one else have this issue or found a fix?
So I don't know if this will help you but it helped me.
Go into "settings", then "sound and vibration", "advanced sound settings", "sound quality and effects ", "adapt sound".
Once there, you will be prompted to do a hearing test on your headphones. When completed, it will change the tones so that they are hearable and all around better in sound quality. I think its still a little to quiet but it was a huge improvement from what I had before.
Hope this helps.
I just picked up the note 10 five days ago and have the same exact issue. Was hoping someone would have a solution. If I can't figure it out soon, I'm returning the phone and going to continue using my note 9.