What happened to the sudden black screen of Meizu mobile phone and no response?

1. Check whether the phone frame is bruised, and whether the screen area is cracked or damaged;

2. Check whether there is dirt on the distance sensor, or stick a frosted protective film (frosted film can easily cause this abnormality, which will change the refraction angle of infrared induced light, resulting in abnormal infrared function and make the screen unable to light up). It is recommended that you remove the dirt. If conditions permit, the protective film can be removed or replaced before the test;

3. If the above operation fails, it is recommended that you clear the user data and upgrade the system after backing up the data, and test the function without installing any third-party software. If something goes wrong, it is recommended that you send your mobile phone for maintenance and testing as soon as possible.