Black dots on Xiaomi Mi Mix 4 screen

If your Xiaomi Mi Mix 4 phone has black dots on the screen, it may be caused by the following:

1. Pixel failure: pixels are the basic units that make up the screen of your phone, and if a pixel is damaged, black dots may appear.

2. Physical damage: If the phone screen has been hit, squeezed, dropped, and other physical damage, it can also lead to black dots on the screen.

3. Damage to the LCD layer: If the LCD layer is cracked or other damage occurs, it can lead to black spots on the screen.

If only one or two small black dots appear occasionally, it may not affect the usage too much. However, if the black dots increase or become larger, it will seriously affect the user's visual experience and usage. If there are black dots on your Xiaomi Mi Mix 4 screen, you can try the following solutions:

1. Use pixel repair software: Some pixel faults can be fixed by pixel repair software.

2. Replace the screen: if the black dots are caused by physical damage to the screen or damage to the LCD layer, then the screen needs to be replaced.

Before trying to fix the problem, make sure that the phone has not been exposed to water or other damages. It is also recommended that you contact Xiaomi after-sales customer service or visit a regular after-sales service center to check and fix the problem.