volume lowers when I open certain apps or unlock my phone
Seems to happen most when I open instagram and/or turn on my screen when it's dark, but also happens randomly when other apps open, including Dark Sky and some apps that don't produce sound at all.
I've turned off "Attention Aware" and "Reduce Loud Sounds" like other posts suggest, and it's NOT the buttons being pressed unintentionally. It's not even that the volume is "lowered," moreso that the max volume of the phone is decreased. I can't even turn it back up manually because the phone is already set to max volume but it's still so quiet I can't hear it. Happens with bluetooth connection, iPhone speaker, and headphone equally.
iPhone 12 mini