Cell phone poisoning screen flashes, all buttons fail, and the cell phone cannot be turned off. Help me answer it, I'm anxious!

Your mobile phone may be poisoned. For example, the SyOptimize virus may cause the screen to flicker. He usually lets users download and install in the name of "optimization expert". After a few seconds of installation, there will be automatic networking behavior, forced download of two softwares, resulting in screen flashing and so on. Or simply go to NetQin to download an antivirus software, kill it and see if there is any poisoning. Alternatively, you can scan the downloaded packages in the free online virus detection of NetQin main station to see if they are all viruses.