The speakers attached to the device have been damaged, I bought another and first turned on the phone and the phone refused to recognize it and its connection sign does not appear at the top of the screen.

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

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 n...