My mobile phone camera has a black screen behind it, and my flashlight doesn't work. What's the matter?

The reason for the black screen of mobile phone:

1. In general, when the mobile phone stores too many things, I think many friends can feel that the mobile phone is running too slowly. When 80% of the memory that their mobile phone can drive is occupied, it may crash.

2. This is that the screen contact of the mobile phone is loose, which is not a big problem, but it will directly lead to the black screen of the mobile phone. It is difficult to find it, and it takes a lot of tests to find it. It's usually caused by the phone being bumped.

It is common for many mobile phones to have a black screen after being used for a long time. The main reason is that the effective service time of mobile phone battery is 1 year, or there is a problem one year after three years. Excessive use leads to aging of mobile phone battery and insufficient voltage.

4. Nowadays, there are many applications for smart phones, but some applications have conflicts themselves, which will also lead to black screen, so the black screen is basically this reason after installing a lot of software.

Many people are keen to use better system. In fact, some systems are not supported by mobile phones, and some are incomplete, which will inevitably lead to a black screen in the future.