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The green lines that appear on an iPhone screen are a problem that can affect several models, from the iPhone X to the latest iPhone 17 Pro Max. This visual defect can compromise the user experience, making reading, touching, and the phone's overall performance difficult. At iServices, we understand the frustration this problem causes and we are here to help resolve this issue quickly and effectively.
This article explains the main causes of green lines on the iPhone screen, presents a table with recommended solutions, and details step-by-step how you can proceed to restore the quality of your device. If you prefer, our specialized mobile phone repair technicians are available in our stores to provide professional technical assistance with warranty and express deliveries.
The flex cable connects the screen to the iPhone's main circuit. A damaged, poorly connected, or worn flex cable can cause visible green lines due to failures in the transmission of visual signals.
The graphics chip is responsible for rendering images on the screen. If this component fails, especially in older models like the iPhone X or iPhone 11, green lines or other visual artifacts may appear.
Drops, impacts, or exposure to liquids can physically damage the screen or its internal components, such as the screen connector or the screen matrix itself, causing green lines.
In some cases, errors in the iOS operating system or unsuccessful updates can cause screen anomalies, including green lines. Although less common, this cause is important to consider.
| Cause | Recommended Solution | Complexity |
|---|---|---|
| Damaged flex cable | Replacement of the flex cable or connector | Medium |
| Defective graphics chip | Advanced diagnosis and possible hardware repair | High |
| Impact or water damage | Replacement of the screen or affected components | High |
| Software problems | iOS update or restore via iTunes | Low |
| Screen with internal defect | Complete screen replacement | Medium/High |
Flex Cable Replacement or Retightening
Graphics Chip Diagnosis and Repair
Replacement of Screen or Damaged Components
Software Update or Restore
Green lines typically arise due to issues with the screen's flex cable, defects in the graphics chip, physical damage caused by drops or liquid, or software errors. Identifying the cause is crucial to applying the correct solution.
Some simple solutions, such as restarting the phone or updating iOS, can be done at home. However, most cases involve technical repairs, such as replacing the flex cable or the screen, which should be performed by professionals to avoid further damage.
The cost varies according to the cause of the problem and the iPhone model. Simple repairs, such as retightening the flex cable, are more economical. Replacing the screen or repairing the graphics chip implies a higher cost. At iServices, we offer free estimates and a warranty on repairs.
If the problem is caused by a manufacturing defect and the iPhone is within the warranty period, the repair may be covered. However, impact or liquid damage is generally not covered. At iServices, we provide a warranty on repairs performed with us.
If your iPhone has green lines on the screen and you don't know how to fix it, visit an iServices store. Our specialized technicians provide free diagnostics and offer fast and effective solutions, with original parts and a warranty.
In addition, we offer express deliveries and technical assistance nationwide so you can get your phone back without delays. Visit iservices.pt and find the store nearest you. At iServices, we are dedicated to ensuring your iPhone works perfectly again.

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