volume control xperia z premium

[Xperiadown]

i've this phone and i can change only volume ring control with notification control is very stupid in the night i cannot mute notification only because if i tried i cannot listen if have important call.

i tried external app but don't work one i've do this error

volume linked
your device links notication volume and ringtone volume to change separately please disable behavior in the setting of your device.
but in sony xperia i cannot separately why? please help

 

[NightOrchid]

Google did that in Android N as a means of Slimming things down.. You will have to live with it because apart from Samsung, All Android phones now have Ring and Notify Volumes as one slider.. and as the XZP is close to stock.. they wont change it..

I could be wrong but i think Apple do it as well... I know Windows Phone has them linked