Good day!
Problem is sony xperia z 3.
When you listen to the sound in the player and on the radio that sound does not increase, and when you press the Volume up button saver appears "The user interface is disabled," and then when you exit this screen phone switches itself off to the position of the bushings password started with a telephone.
If who faced help advice. In most applications folder "user interface" is not disabled and is not stopped
