Does Your Sony Xperia Z Ultra / Z1 screen stays on? No Problem Here is the Solution

If your Sony Xperia Z Ultra / Z1 screen does not turn off completely, stays on and never seems to go completely into sleep mode. You see your screen is blank but it is still on and you can see the screen backlight. No need to worry as it is not a hardware problem rather software. There is very easy fix for it and watch this video for the solution. This is the seventh (7th) part of the Tips & Tricks series.