The black screen in use is mostly caused by downloaded third-party software, which is rare in the software that comes with this machine. There may be two reasons: there may be a problem with the software itself, such as the software itself is unstable or does not match the mobile phone system, and uninstalling the software can solve this problem; If the software is incompatible, it needs to be installed and uninstalled one by one, and the experiment will check which software is the problem. If you find it, uninstall it, and the problem can be basically solved.
Standby black screen is mainly because the mobile phone will automatically turn off the screen if it can't detect the key trigger signal for a long time, that is, standby. When the mobile phone needs to be used, the key will activate the circuit in the mobile phone, and then the screen will light up.
The reason for the black screen may be that the mobile phone system sends an instruction to light up the screen, but the screen can't respond in time due to the delay of circuit transmission, which leads to the black screen. In this case, there is no need to rush to recover. Wait a moment or use the phone around you to make a black screen call. If you can get through, the problem will be solved