Intelligent backlight control problem

I use Xperia Z2 for 2.5 months and his Intelligent backlight control does not work in general. I use 'adopt to lighting conditions' brightness (I write this because it is suggested in an old post), I enabled early Intelligent backlight control and... No, it doesn't.

I open a photo and look at the it for a while. My "sleep" starts in 30 seconds and although I look directly at the screen, it starts. The screen turns off. No such thing as intelligent backlight.

Now, am I missing something or is there a situation that Sony could not manage this property? Before this, I used Samsung S2 and I know that the Intelligent backlight control is a property of the software (there is no "Intelligent backlight" in Android 2.3.5 in this phone, but with Android 4.1 it was ok). So what is the reason for this problem?

Thank you.

It works fine when I test it here. I tested it in several units, so I don't know what causes it.
From what I could find during the test here it is not based on the camera but the movement. The accelerometer and gyroscope works in your phone if you are testing in the service menu? To access that, dial * #* #* #* #7378423 and Service tests.

Tags: Sony Phones

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