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When the phone is turned on and off, a line will flash at the bottom of the screen.

Causes and solutions of possible vertical lines on mobile phone screen;

1. The mobile phone screen is faulty and the LCD screen is damaged. It is recommended to change the screen.

2. The mobile phone cable is loose/faulty, so it is recommended to replace it.

3. Specific faults need to be sent to after-sales or professional maintenance points for testing, so as to be repaired.

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