What should I do if the screen of Xiaomi 4 mobile phone is not bright?

If the screen is not bright, it should be that the screen of the mobile phone is broken and needs to be sent to Xiaomi after-sales service center for repair. If it is within the warranty period, it will be replaced free of charge. If it is not within the warranty period, it needs to be repaired at its own expense.

Expansion: Mobile phone screen is also called display screen, which is used to display images and colors. The screen size is calculated according to the diagonal of the screen, usually in inches, which refers to the length of the diagonal of the screen. With the gradual popularization of mobile phone color screen, the material of mobile phone screen becomes more and more important.

Classification: Due to the different LCD quality and R&D technology, the color screens of mobile phones are also different. There are TFT, TFD, UFB, STN and organic light emitting diodes. Generally speaking, the more colors that can be displayed, the more complex the image that can be displayed, and the richer the level of the picture.

Contrast: STN is the main equipment of early color screen, which can only display 256 colors at first. Although it can display 4096 colors or even 65536 colors after technical transformation, the general STN is still 256 colors, which is cheap and low in energy consumption. TFT has good brightness, high contrast, strong layering and bright colors. Disadvantages are high power consumption and high cost.