Thin black lines appeared on the screen of Xiaomi mobile phone for several days.

The black line on the screen belongs to a manifestation of the flower screen. The causes and solutions of flower screen are as follows:

1, the screen is broken and the LCD screen is broken. There is no way. The most troublesome thing is to change the whole screen.

2, the motherboard is broken, change the whole motherboard, but this probability is relatively small, but it is not excluded that the method is to change the motherboard.