Request urgent solution
My phone system has changed today, and after that I changed the mode of light to night. Then the screen turned darker. I could not set up the settings or turn off the phone. Note that the sound still works, and when I touch the screen some applications are running but I can not see them.
My phone BV 800

what update did you make and how? What light setting did you change exactly?

We can't understand your problem properly, but a factory reset should fix the problem considering that it happened after interacting with some settings. Let us know.

I have prepared factory settings. The update already mentioned can update the Android system

ameerah wrote:

I have prepared factory settings. The update already mentioned can update the Android system

Did the factory reset fix your problem?