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Blue Line on iPhone Screen? Here's How to Fix It!

Updated by Brian Davis on Apr 26, 2024 4:13 PM • Category: iOS & iPhone Tips
7 mins read

"I recently updated my iPhone 6S to the iOS version 15, and soon after am experiencing blue line on iPhone screen, it is impossible to make calls or reply text messages. Any with a reason why it happened? And how can I fix it? Please help!" - Nora from Apple Community

blue line on iphone screen

If you see blue lines on iPhone screen, that shows that something is utterly wrong with your iPhone. However, you need not to be sacred. Many old iPhone users have reported that they have been experiencing blue lines on iPhone screen problem after software updates. To end your misery, this article will furnish possible fixes to the "iPhone blue line on screen" problem but first, let's explore a few reasons you might be experiencing this dreaded problem.

Part 1. Reasons for Blue Line on iPhone Screen Problem

The iPhone blue line on screen issue can either emanate from software or hardware problems, especially if you recently dropped your iPhone. Below are some specific reasons why you might be encountering the problem.

1. Physical damage: The blue vertical lines on your iPhone screen may appear if you recently dropped your iPhone. The drop may damage the LCD circuit cable that connects to the logic board and hence causing the blue line display problem.

2. Electro-Static Discharge: If your iPhone produces too much ESD than normal, you are more likely to see a blue line on your screen.

3. App problem: Even though rare, iPhone experience internal app conflicts that cause display problems.

4. Software error: A system software glitch is also a common reason for the iPhone blue line on screen problem.

Part 2. How to Fix Blue Line on iPhone Screen Problem

So, how do you go about fixing the blue vertical line on your iPhone? Well, we have got you covered, and here are some basic fixes you should try out!

Fix 1: Force Restart Your iPhone

First, you need to try the most straightforward fixes, and force restart is an excellent fix for most iPhone problems. A simple restart provides your iPhone with a fresh start eliminating all app conflicts and occurring bugs that may be causing the blue line on your iPhone screen. Here is how you can restart your iPhone depending on the model you are using.

force restart iphone

iPhone 8 and recent models: Quickly press and release the volume up button, then the volume down, and finally press and hold the power button until an Apple logo shows on your screen.

iPhone 7 and iPhone 7 Plus: Simultaneously, press and hold the volume and side buttons until an Apple logo displays at the center of your iPhone screen.

iPhone 6s and earlier models: At the same time, press and hold the home button and top power button until an Apple logo flashes on your screen.

This should help fix the problem.

Fix 2: Clean the Screen

We said excessive electric static charge may be the root problem for the blue line on iPhone. Usually, ESD is part and parcel of all smartphones. However, if the charge is excessive, it tends to distort the display abilities of your iPhone and hence the blue lines.

To fix the problem, you need to clean your screen and get rid of the excess charges. Please use an anti-static bracelet for better results.

clean iphone screen

Fix 3: Turn Off Switch Control

If you have enabled the Switch Control feature on your iPhone, you may encounter blue line on iPhone screen. You can follow the below steps to turn off the Switch Control feature on your iPhone and check if the problem is fixed.

ios switch control

Step 1: Go back to Home screen and open Settings.
Step 2: Select General.
Step 3: Hit on Accessibility.
Step 4: Click on Switch Control and toggle off the switch.

Fix 4: Fix Blue Line on iPhone Screen without Data Loss – Required Tool

Putting your iPhone into DFU mode puts you at risk of losing your data and iPhone settings. Besides, the process is very engaging, especially if you have to create a backup for your data, and that is precisely why we would introduce you to a far more effective and friendlier solution to fix the blue line on iPhone screen problem quickly and without data loss.

Having exhausted all the possible hardware problems, it is more than clear that the blue lines problem could most likely be resulting from a severe system that requires a quick remedy. To fix the problem without data, we recommend that you use the TunesKit iOS System Recovery Software. It is world-class software designed to resolve iOS/tvOS related issues such as black screen, boot loop screen, restore failure, blue lines, among other problems.

The TunesKit iOS System Recovery software can fix over 150 software problems on literally all Apple devices. Besides, you can use it to downgrade/ upgrade iOS versions, fix iTunes errors and enter/ exit recovery mode in just one click. Most importantly, the software is easy to use, 100% secure, and guarantees regular free updates.

tuneskit ios system recovery

Characteristics of TunesKit iOS System Recovery:

  • Fix blue line on iPhone screen without data loss
  • Repair different iPadOS/iOS issues by yourself
  • Provide Standard Repair and Deep Repair
  • Upgrade or downgrade iOS in minutes
  • Enter or exit iPhone/iPad/iPod touch recovery mode in one click
  • Easy to use with friendly interface
Try It Free safe 600,000+ Downloads
Try It Free safe 600,000+ Downloads

That said, here is a complete guide on how to fix the blue line on iPhone problem using the TunesKit iOS System Recovery tool.

Step 1Connect iPhone to Your Computer

After installation, launch the TunesKit iOS System Recovery software on your computer. Using an Apple USB cable, connect your iPhone to the computer. The iPhone will automatically detect. Then, click on the "Start" button to move to the next window.

connect iPad to PC

Step 2Select a Repair Mode

The new window will display two iOS repair mode options. Select the "Standard Repair" and hit the "Next" button. You will be prompted to select the device you connected and follow the interface's instructions to put your device into DFU mode. After that, click the "Next" option. Avoid using the "Deep Repair", for you will end up losing your data.

select a mode

Note: If your phone is broken, you can use the "Enter Recovery Mode" or "Exit Recovery Mode" option to put your iPhone into/ out of recovery mode in just one click.

Step 3Download Firmware Package

The new TunesKit interface will display the specific details of the firmware package. First, check to confirm if the specifics match those of your iPhone. Please make the necessary changes if anything is wrong. Then, click on the "Download" button to begin the firmware download process.

download firmware

Step 4Fix Blue Line on iPhone Screen

After the download process is complete, simply hit on the "Repair", and the TunesKit iOS System recovery software will automatically begin to fix your iPhone's software system glitch that may be causing the blue lines on your iPhone. Please, ensure that your iPhone remains connected during the entire process to avoid bricking your device.

Wait for the process to complete and restart your iPhone to see if the blue line on screen problem is fixed.

fix blue line on iphone screen

Fix 5: Update Your iPhone iOS System

If you are using an older iOS version, you need to update to the latest iOS version. This is because older iOS versions are more prone to developing bugs, and that is precisely the reason why Apple provides regular updates to help fix occurring bugs that may be the cause for your blue line screen problem on your iPhone. Here is a quick guide on how to update your iPhone to the latest version.

update ios system

Step 1: Connect your iPhone to an internet connection.
Step 2: On your iPhone, go to "Settings" > "General."
Step 3: Scroll to find "Software Update" and tap on the option.
Step 4: Check to see if there are any available updates and click "Install Update".
Step 5: Enter your passcode and wait for the update process to complete.

Fix 6: Enter iPhone into DFU Mode

If the iPhone update fix does not work to remedy your iPhone blue lines on screen problem, it is now time that we try a more aggressive method- entering your iPhone into DFU (Device Firmware Update) mode. Please make sure you have a backup for all your iPhone contents and settings, as this method may lead to data loss. Below is a quick step-by-step guide on how to get it done.

dfu mode by itunes

Step 1: Make you have the latest iTunes app version for better results.
Step 2: Using a genuine Apple USB cable, connect your iPhone to the computer and launch the iTunes app.
Step 3: Press the Power button and the Home button (for iPhone 6and below) or the Side button and Volume button (For newer iPhone models) for a few seconds.
Step 4: Next, let go of the Power button and continue to hold the Home/Volume button until iTunes displays the "iTunes has detected an iPhone in recovery mode" notification.
Step 5: Release the button, and the iPhone screen should automatically turn black.
Step 6: Finally, click on the Restore option to fix the blue line on iPhone screen problem.

Fix 7: Ask Apple Support for Help

If the problem is not resolved by now, you should call the Apple support desk for corresponding assistance. Please, do not give in to the temptation to open your iPhone as it may worsen the situation, and you will end up nullifying your Apple warranty.

Part 3: Repair Hardware Issues about Blue Lines on iPhone

If the above software troubleshooting methods do not solve the blue lines on iPhone issue, then it is most likely a hardware failure. Here are some tips for you to check.

1. Check Flex Cables and Logic Board Connection: First of all, you can clear any dust from the flex cables and logic board connections using a brush or a small amount of alcohol; second, look for any damage to the connections or if the flex ribbon bends at a 90-degree angle. If damaged, replace immediately; Third, connect the flex ribbon to the motherboard properly and ensure all connections are in the correct orientation; Finally, avoid bending the flex ribbon during testing or installation.

2. Eliminate Static Charge: ESD is electrostatic discharge and is a major component of iPhone. When blue lines appear on your iPhone screen. If an electrostatic discharge occurs, your iPhone will be disturbed and the iPhone screen will show blue lines. You can use anti-static bracelets to eliminate static electricity.

3. Check the Integrated Circuit: A damaged IC is also one of the causes of blue lines on the iPhone screen. Damaged ICs can be detected by checking the top and left edges of the cable. If there is any damage, just replace it with a new one.

4. Check if the LCD screen is damaged: You can check for LCD flicker problems. If the LCD is damaged, it may cause problems with the internal circuitry, in this case, you can buy a LCD kit to replace it.


The above-listed solutions have previously proven very useful in fixing the blue lines on iPhone screen problem. It is now your job to find the perfect solution to remedy the problem on your iPhone. However, it is worth noting that some methods may lead to data, and therefore we highly recommend that your try out the TunesKit iOS System Recovery tool as it is easy to use, guarantees 100% data safety, and works incredibly fast to fix the problem.

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