iPhone Stuck In Boot Loop
iPhone Stuck In Boot Loop

If your iPhone is boot looping after you’ve replaced the screen, you’ve encountered a somewhat common problem that usually can be remedied. This problem can be quite frustrating, especially when you’ve just replaced your screen, expecting a smooth transition back to using your device. Based on real-life experiences and solutions shared online, this guide aims to help you understand and potentially resolve the boot loop issue on your iPhone after a screen replacement.

Understanding the Boot Loop Phenomenon

A boot loop occurs when an iPhone continuously restarts without fully booting up. It’s like being stuck in a never-ending cycle of restarts, making the device virtually unusable. This can be particularly distressing, especially if the phone was functioning correctly before a screen replacement.

Some Signs You’re Stuck In A Boot Loop

After charging your phone if the phone keeps restarting, showing the Apple logo but never reaching the main screen, and then looping over and over again – you’re stuck in a boot loop. This usually can’t be resolved with hard resets or iTunes restores, but they’re worth a shot.

  1. Infinite Boot Loop: Your iPhone is stuck in an infinite boot loop. Restarting it doesn’t help.
  2. Screen Display Issues: Post-replacement, your screen may display lines running down it.
  3. Recovery Mode Failures: In an attempt to resolve the first two issues, you might connect the phone to iTunes and initiate recovery mode. Despite restoring the phone to factory settings, the problems don’t go away.

Potential Causes of the Boot Loop

  1. Faulty Screen Replacement: If the replacement screen is of low quality or not compatible with the iPhone model, it can lead to boot looping.
  2. Improper Installation: Even with a genuine screen, if not installed correctly, it can cause issues. This includes not connecting the cables properly or damaging other components during installation. One of the most common things people do is cause shorts by not disconnecting the battery while operating inside the device. This is a crucial first step.
  3. Software Conflicts: Sometimes, the hardware change can conflict with the iPhone’s software, leading to boot loops.
  4. Phone Defective Before Repair: It’s important to know if the phone was boot looping before the screen replacement. If it was, changing the screen doesn’t really fix that.
  5. Home Button Issues: For phones that have a home button, you might be in it because iOS is detecting a non-original home button. If you’ve replaced the home button, it might not be the solution to the boot loop problem. Instead, the issue could be related to the home button flex or even the Audio IC. In some cases, short boot loops can be attributed to the baseband chip or BBPMU.
  6. Front Camera: Boot loop issues can sometimes be attributed to the front camera connection. Try disconnecting the front camera to see if that changes anything. If the phone does boot without the front camera, it indicates that the flex cable might have been damaged in some way.
  7. Audio IC: Boot loop problems can be tied to the audio IC. This component is essential for the phone’s audio functions, and any damage or malfunction could lead to boot loop issues.
  8. Quality of Replacement Parts: Sometimes boot loop issues might be due to a poor-quality replacement part. It’s always advisable to source parts from trusted vendors. If the logic board sparked during the replacement process, it’s possible that the logic board got fried. In such a scenario, replacing the logic board might be the solution.

Steps To Take to get out of the Boot Loop

  1. Hard Reset: The first step is to try a hard reset. For most iPhones, this involves pressing and holding both the volume up and power buttons until the Apple logo appears.
  2. Disconnect Ear Speaker Flex: First, disconnect the battery. Then see if disconnecting the earspeaker flex and reconnect the battery. See if that gets the phone to boot. If not, revert back to the original screen with no ear speaker attached to see if it boots.
  3. Restore in Recovery Mode: Connect your iPhone to a computer with iTunes, put it in recovery mode, and then restore it. This will erase all data, so ensure you have a backup.
  4. Check the Connections: If you’re comfortable opening your iPhone or if you know someone skilled, check to ensure all connections, especially the screen connectors, are secure.
  5. Disconnect the Proximity Sensor: Sometimes bypassing your front proximity sensor will bypass the boot loop issue. However, this solution comes with a trade-off: the selfie camera function will be disabled.
  6. 3uTools: If there’s a software reason for the issue try connecting the phone and loading 3utools. There should be an option about exit or enter recovery mode under tools section.
  7. DFU Mode and iTunes: Boot the iPhone in DFU mode and attempting an update using iTunes. If an error code appears during this process, it could provide more insight into the issue.
  8. Self Service Repair Program: Apple has introduced a self-service repair program, allowing users to access genuine parts, tools, and manuals for certain repairs. However, this program is not available in all countries.
  9. Seek Professional Help: If the issue persists, it’s advisable to consult with a professional or the service provider that replaced the screen.

iOS System Issues

Sometimes a boot loop might not necessarily be a hardware issue. It could be related to the iOS system on the phone. Some potential solutions include:

  • Restarting the iPhone.
  • Resetting the phone.
  • Using third-party software like TunesKit iOS System Recovery. However, before resetting the phone, it’s essential to back up all data to prevent any data loss.

Preventing Future Boot Loops

  1. Quality Parts: Always opt for high-quality, compatible replacement parts for your iPhone.
  2. Skilled Technicians: Ensure that the person replacing the screen is skilled and experienced.
  3. Backup Regularly: To safeguard against data loss, regularly backup your iPhone. Before any major updates or repairs, ensure you have a recent backup of your device. This can be a lifesaver if things go south.
  4. Hardware Connections: When replacing parts, ensure that all connections, especially those of the front camera, proximity sensor, and other flex cables are secure and undamaged.
  5. Use the Right Tools: Always use the correct screw length and ensure you’re using quality tools to avoid damaging your device.
  6. Software Solutions: Sometimes, the issue might not be hardware-related. Consider exploring software solutions and third-party recovery tools if you suspect the iOS system might be the problem.

Screw Length Matters

Using the correct screw length (and correct parts in general) during the repair process is critical. The iPhone has screws on specific plates at specific lengths. Using a screw that’s too long in the wrong spot can cause irreparable damage. It’s crucial to ensure that you’re using the appropriate screws to avoid any complications.

The Importance of Quality Parts

Using quality parts is critical as not only does it affect your experience, but iOS has a lot of checks to make sure things are up to grade with what Apple is expecting. Post-update if your touch screen becames erratic and unresponsive, you might have a bad part. Sometimes downgrading iOS to an older OS version can fix things, but this isn’t ideal. As a reminder of the potential issues that can arise from software updates – always use certified or high grade replacement parts and check your suppliers.


While an iPhone stuck in a boot loop post-screen replacement can be alarming, understanding the potential causes and solutions can equip you to address the issue effectively. Remember, when it comes to device repairs, quality and expertise matter.

Replacing an iPhone screen can sometimes lead to unforeseen issues like the boot loop. While it’s essential to ensure you’re using quality replacement parts, understanding the intricacies of the iPhone’s hardware and software can also play a crucial role in a successful screen replacement. If you’re not confident in your skills, it might be best to seek professional help.


  1. Why is my iPhone stuck in a boot loop after screen replacement?
    • It could be due to several reasons, including issues with the home button, the quality of the replacement parts, or even damage to the logic board.
  2. Is the original home button essential for the iPhone 8?
    • Yes, especially for resolving long boot loop issues. Replacing the home button might not be the solution to the boot loop problem.
  3. What should I do if the logic board sparked during the screen replacement?
    • It’s possible that the logic board got damaged. Consider replacing the logic board and always ensure you’re using quality replacement parts.
  4. Will restoring my iPhone in recovery mode void its warranty?
    • Restoring in recovery mode is a standard procedure and won’t void Apple’s warranty. However, third-party screen replacements might.
  5. How can I backup my iPhone if it’s stuck in a boot loop?
    • If you had set up automatic backups to iCloud or regularly backed up to iTunes, you should have recent backups. Unfortunately, if the device is stuck in a boot loop, you won’t be able to create a new backup until it’s fixed.
  6. Are boot loops exclusive to screen replacements?
    • No, boot loops can occur due to various reasons, including software glitches, failed updates, or other hardware issues.
  7. What If I’m Forced Into Recovery Mode after the screen replacement?
    • If you’re forced into recovery mode then most likely it’s one resistor near the NAND chip that needs to be replaced.
  8. How do you turn off an iPhone that is stuck in a boot loop?
    • It’s not possible to turn off an iPhone stuck in a boot loop unless the iPhone is opened up. If it is open you can disconnect the battery (this is risky because you’re disconnecting the battery while the iPhone is technically still powered on). If the iPhone is not opened up, there’s no way to disconnect the power so it will constantly loop until the battery runs out. It’s recommended to just let the battery run out.
Eric Chan

Hi! I’m Eric and I work on the knowledge base at GadgetMates.com.  You can see some of my writings about technology, cellphone repair, and computer repair here.

When I’m not writing about tech I’m playing with my dog or hanging out with my girlfriend.

Shoot me a message at ericchan@gadgetmates.com if you want to see a topic discussed or have a correction on something I’ve written.

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