I have a problem with the multimedia volume of my mobile, it occurs in case when it is connected by Bluetooh, it is to some headphones or speakers, the physical buttons of the cell volume do not work, that is, it does not increase or decrease the volume level, and I have to be entering the configuration and sound menu and there it can be modified. This problem arose since I installed the version of miui 9.1.3 in my Redmi 4 Pro. I need your help please ...
