sony xz2 compact display issue

[amr ashraf mostafa]

Hello sony fans
I had a new xz2 compact and the phone works perfectly.but i have a certian issue.
When i start making a call the screen immediatly shut off when i press the call button and it remains off until i press the power button to lock and then unlock the phone and then the screen lights again ..

 

[biunsan]

I had a random change in screen brightness until I turned off Adaptive brightness.