It may be due to the following accessories:
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1, LCD screen
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Mobile phone screen LCD screen is composed of LCD screen panel, filter plate, backlight source. The liquid crystal in the LCD panel is arranged on the screen LCD panel, and the outside of the LCD screen is protected by the external glass, but the LCD screen is very afraid of the pressure from the front, such as accidentally sitting on the Apple phone, the LCD panel is damaged, and the liquid in the LCD screen will flow out, which will lead to a vertical straight line or a horizontal straight line on the screen. If the amount of liquid flowing out is relatively large, the watermark effect will appear.
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2. Display the cable
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The display cable is a connection cable between the LCD screen and the mainboard chipset inside the mobile phone. The display cable is virtual welded. Poor contact will lead to a straight line on the screen of the iPhone. The iPhone screen is pressed does not cause the display line welding, only the phone is dropped will cause the display line welding.
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3. Display chip components
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The failure of the display chip component on the motherboard will not lead to a straight line on the screen of the Apple phone, but a black screen on the phone screen, so a straight line on the screen of the Apple phone can eliminate the problem of the motherboard display chip component.
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There is a straight line conclusion on the screen of the iPhone
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Under normal circumstances, if the Apple phone has not been dismantled or repaired, 80% of the possibility of a straight line on the mobile phone screen is the problem of the mobile phone screen LCD screen, because the mobile phone has not been dismantled and repaired, the display line of the Apple phone is fixed very firmly when the package is packaged, so only 20% of the possibility will lead to a straight line on the mobile phone screen. However, the two can not be judged by the naked eye through the appearance, you must disassemble the phone, first press and hold the line to reinstall the line, if the straight line disappears on the screen, it indicates that the line is the problem, and on the contrary, you can determine the problem of the LCD screen.
Does the Huawei phone have a line across the screen?
Huawei mobile phone screen has a horizontal line, it is the line of the mobile phone screen has a problem! It may be that the bayonet of the screen line is in poor contact! And the phone screen cable is completely broken! It is recommended that you take your mobile phone to Huawei's after-sales repair network to replace it, if your mobile phone is within the warranty period! Repairs are free of charge
Snake brother said that your phone screen has been damaged, if you do not care about the display effect then do not go to repair, repair once too expensive, if you care, then go to repair it