A white line appearing on your iPhone screen can be quite frustrating, especially when you rely on your phone for daily tasks or communications.
In this comprehensive guide, we will explain the reasons behind a white line on your iPhone screen and offer solutions to this problem, ranging from basic force restarts to advanced iOS system repair.

Part 1: Why does iPhone Display White Lines?
Reason 1: Software Issues
One of the primary reasons is software related problems. This could stem from bugs within the iOS system or conflicts with recently installed applications. For instance, an incomplete update might lead to display glitches, including lines appearing on the screen.
Reason 2: Water Damage
Even minimal exposure to moisture can affect the internal components of your device, leading to display problems. If you suspect that your iPhone has been exposed to water, it’s advisable to act swiftly. Allow the device to dry completely before attempting any fixes to prevent further damage.
Reason 3: Hardware Damage
Hardware damage can manifest in various forms, often resulting from drops, impacts, or prolonged exposure to extreme temperatures. Such physical trauma can affect the display connectors, leading to malfunctioning screens. If the white line appears after a fall or impact, it might indicate that the internal components have been compromised.
Reason 4: Physical Damage
In addition to internal hardware damage, physical damage to the screen itself can also cause white lines to appear. Scratches, cracks, or other forms of damage can interfere with the display’s functionality, resulting in visual anomalies.
Reason 5: Display IC Damage
The Display Integrated Circuit (IC) is a crucial component that controls the display’s functionality. If the Display IC is damaged or malfunctioning, it can lead to a range of issues, including white lines. If you suspect Display IC damage, it is advisable to consult with a professional technician.
Part 2: How to Get Rid of White Line on iPhone
Fix 1: Repair White Lines Without Data Loss
TunesKit iOS System Recovery is one of the best choices to fix the white lines without losing any of your data. It is a helpful tool to fix over 150 iPhone issues at home, including iPhone stuck on Apple logo, boot loop and restore failure.
Step 1: Download and install TunesKit iOS System Recovery on your computer.
Step 2: Use a USB cable to connect your iPhone to the computer. Open TunesKit iOS System Recovery and select iOS System Repair.

Step 3: Click Start and select Standard Repair, which will not cause data loss.

Step 4: Confirm the device information, and click Download to download the firmware package.

Step 5: Click Start Standard Repair, wait for the repair to complete.

Step 6: Once the software has finished, check your iPhone screen to see if the white line has disappeared.

Aside from white lines, it can repair other screen display issues, like iPhone green screen, vertical lines, black screen and blue screen and so on.
Fix 2: Restart Your iPhone
A simple force restart can often resolve minor software glitches that may cause display anomalies.
For iPhone 8 and Later:
Step 1: Quickly press and release the Volume Up button.
Step 2: Quickly press and release the Volume Down button.
Step 3: Press and hold the Side button until the Apple logo appears (usually 10–15 seconds).

For iPhone 7 and 7 Plus:
Step 1: Press and hold both the Volume Down button and the Side/Sleep button simultaneously.
Step 2: Hold until the Apple logo appears.
For iPhone 6 and earlier:
Step 1: Press and hold both the Home button and the Sleep/Wake button.
Step 2: Keep holding until the Apple logo appears.
Fix 3: Reset iPhone Settings
If the white line persists, consider resetting iPhone settings.
Navigate to Settings > General > Transfer or Reset iPhone > Reset.
Reset all settings: It will revert your iPhone’s settings to their defaults without deleting your data.
Erase All Content and Settings: It will reset your iPhone to its factory settings, erasing all data and settings. If you choose to erase, you’d better back up your iPhone first.
Fix 4: Update iOS Version
Keeping your iPhone’s iOS version updated is crucial for optimal performance.
Navigate to Settings > General > Software Update. If there is an update available, tap Download and Install. You can also enable automatic updates in the same section.

Fix 5: Restore iPhone in Recovery/DFU Mode
For more severe software issues, restoring your iPhone in Recovery or DFU mode may be necessary.
Step 1: Use a USB cable to connect your iPhone to a computer with iTunes or Finder open.
Step 2: For iPhone 8 and later: Press and quickly release the Volume Up button, Volume Down button, then press and hold the Side button until the recovery mode screen appears.
For iPhone 7 and 7 Plus: Press and hold the Volume Down and Side buttons simultaneously until you see the recovery mode screen.
For iPhone 6s and earlier: Press and hold the Home and Top (or Side) buttons together until the recovery mode screen appears.
Step 3: In iTunes or Finder, select your device and choose the Restore option.
Step 4: Confirm your choice and let the device restore. This action may lead to data loss, so ensure you have a backup.
Fix 6: Restore iPhone with iTunes/Finder
When performing this operation, ensure you back up your data. Restoring will erase all content on your device.
Step 1: Connect your iPhone to the computer and open iTunes/Finder.
Step 2: Click on the iPhone icon, in the Summary panel, click on Restore iPhone. Confirm your action when prompted.
Step 3: Wait iTunes or Finder to restore your iPhone. It will download the latest iOS version if needed.
Fix 7: Check for Physical Damage
If the white line continues to appear despite trying all the above steps, it’s time to examine your iPhone for physical damage. You can inspect the screen, look for impact signs, and tap to swipe on the screen to see if the white line changes or disappears. If you discover physical damage, it’s advisable to consult a professional technician for repair options.

Part 3: FAQs about White Line on iPhone Screen
Q1: Can I fix the white line on my iPhone screen myself?
While some software-related issues can be resolved at home, hardware problems typically require professional assistance. If the white line persists after attempting software fixes, it’s advisable to consult a technician.
Q2: Will updating my iPhone fix the white line issue?
Updating your iPhone can resolve software-related bugs that may be causing the white line. It’s always a good idea to keep your iOS version current to maintain optimal performance.
Q3: How can I prevent white lines from appearing on my iPhone screen?
To prevent white lines occurred again on your iPhone, handle your device with care, avoid exposure to moisture, and regularly update your software. Additionally, consider using a protective case to minimize the risk of physical damage.
Conclusion
A white line on your iPhone screen needs attention. Whether it’s a software glitch or hardware damage, acting quickly is key. By following the methods outlined in this guide, you can increase your chances of restoring your iPhone to its optimal state.
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