The phone was black when I received the text message.

The reason for the black screen of mobile phone:

1. Under normal circumstances, when the mobile phone stores too many things, I think many friends can feel that the mobile phone is running too slowly. When the memory that their mobile phone can drive is occupied by 80%, 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 a lot of tests are needed to find it. It's usually caused by the phone being bumped.

3. It is very common for many mobile phones to use black screens 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 in smart phones, but some of them have conflicts, which will also lead to a black screen, so the black screen after installing a lot of software is basically for this reason.

Many people are keen to use better system. In fact, some systems are not supported by mobile phones, and some systems are incomplete, so it is inevitable that there will be a black screen when using them in the future.