If your iPhone screen is flickering, flashing, dimming randomly, or showing strange lines, it can make your phone almost impossible to use. Screen flickering is one of the most common iPhone display issues, and while it may seem serious, the cause is often something repairable.
In this guide, we’ll go over the most common causes of iPhone screen flickering and what you can do to fix it.
Common Causes of iPhone Screen Flickering
There are several different things that can cause an iPhone display to flicker. Some are software related, while others are caused by damaged internal components.
1. Damaged OLED Display
One of the most common causes of screen flickering is a damaged OLED panel. This usually happens after:
- Drops
- Pressure damage
- Water exposure
- Previous repairs
Even if the glass itself is not cracked, the internal display layers may still be damaged. OLED screens are extremely sensitive, and small internal failures can cause flickering, green lines, ghost touching, or random dimming.
2. Loose or Damaged Display Connectors
Inside every iPhone are tiny display connectors that connect the screen to the motherboard. If these connectors become loose or damaged, the display may begin flickering or cutting in and out.
This can sometimes happen after:
- A repair
- A hard drop
- Improper installation
- Water damage
In some cases, simply reconnecting the display properly can solve the issue.
3. Low Quality Aftermarket Screens
Not all replacement screens are made equally. Cheap aftermarket displays often use lower quality components that may cause:
- Flickering
- Poor brightness
- Touch issues
- Inaccurate colors
- Random display glitches
This is one reason many repair shops and customers prefer genuine OEM pull screens instead of low quality aftermarket replacements.
4. Software Issues
Although less common, software bugs can also cause temporary screen flickering. This may happen after:
- iOS updates
- App crashes
- System glitches
- Storage issues
Before replacing the screen, it’s always a good idea to:
- Restart the phone
- Update iOS
- Check for app issues
- Reset settings if necessary
If the flickering continues after software troubleshooting, the issue is most likely hardware related.
5. Water Damage
Even small amounts of moisture inside an iPhone can damage display components over time. Water damage may not always kill the screen immediately, sometimes flickering starts days or even weeks later.
Signs of water damage may include:
- Flickering
- Green or white lines
- Random touch input
- Black spots
- Display discoloration
How To Fix an iPhone Screen That’s Flickering
The correct repair depends on what caused the issue. Some possible fixes include:
- Restarting the device
- Updating iOS
- Reconnecting the display
- Replacing the screen
- Repairing motherboard damage
If the display itself is damaged, replacing the screen is usually the best solution.
OEM vs Aftermarket Replacement Screens
When replacing an iPhone screen, the quality of the replacement matters a lot. Genuine OEM pull screens are original Apple displays removed from real iPhones, helping preserve:
- Better color accuracy
- Proper brightness
- Smoother touch response
- More reliable performance
- Features like True Tone compatibility
Many low cost aftermarket displays may work initially, but often have lower brightness, weaker durability, and a higher chance of flickering problems over time.