August 22, 2023

How To Fix Lines on iPhone Screen

In today’s digital age, smartphones like the iPhone have become an integral part of our lives, connecting us to the world and providing a plethora of functionalities. However, even these advanced devices are not immune to technical issues. One such problem that iPhone users might encounter is the appearance of lines on the screen. These lines can disrupt the user experience and raise concerns about the device’s health. In this comprehensive guide, we will explore the potential causes of this issue and provide step-by-step How To Fix Lines on iPhone Screen.

Understanding the Issue

How To Fix Lines on iPhone Screen
How To Fix Lines on iPhone Screen

Lines on the iPhone screen can manifest in various ways: vertical lines, horizontal lines, or even a combination of both. These lines can be colored, black, white, or even translucent. They may appear intermittently or be consistently present on the screen. The underlying causes of these lines can range from software glitches to hardware malfunctions.

Potential Causes

  1. Software Glitches: Sometimes, lines on the iPhone screen can be caused by temporary software glitches or bugs. These can occur due to recent software updates, app conflicts, or other temporary issues.
  2. Physical Damage: Dropping or impacting the iPhone can damage the internal components, including the screen connectors. This can result in distorted visuals, including lines on the screen.
  3. Hardware Malfunction: Problems with the iPhone’s hardware components, such as the display or graphics chip, can lead to abnormal screen behavior, including the appearance of lines.
  4. Overheating: Excessive heat can affect the internal components of the iPhone, potentially leading to display anomalies like lines on the screen.
  5. Loose Connections: Over time, the internal connections that link the display to the iPhone’s logic board can become loose, resulting in visual disturbances.

Troubleshooting Steps

Before attempting any solutions, it’s important to back up your data to prevent potential data loss. Once that’s done, you can proceed with the following troubleshooting steps:

1. Restart Your iPhone:

Often, a simple restart can resolve temporary glitches causing the issue. Press and hold the power button until the “slide to power off” slider appears, then slide to turn off. Wait a few seconds, and then press and hold the power button again to turn on the device.

2. Update Your Software:

Ensure your iPhone’s software is up to date. Software updates often include bug fixes that can address display-related issues. Go to Settings > General > Software Update to check for and install any available updates.

3. Safe Mode:

Boot your iPhone into Safe Mode to check if the lines are caused by third-party apps. To do this, restart the iPhone and, when the Apple logo appears, hold down the Volume Down button until the home screen appears.

4. Perform a Hard Reset:

If the issue persists, try a hard reset. For iPhone 8 and later models, quickly press and release the Volume Up button, then quickly press and release the Volume Down button, and finally, press and hold the Side button until the Apple logo appears.

5. Restore from Backup:

How To Fix Lines on iPhone Screen
How To Fix Lines on iPhone Screen

If the above steps don’t work, try restoring your iPhone from a backup using iTunes or Finder (macOS Catalina and later). This can eliminate any software-related issues that might be causing the lines.

6. Check for Hardware Damage:

Carefully inspect your iPhone for any signs of physical damage. If you’ve recently dropped the device, the lines might be a result of a damaged screen or internal components.

7. Professional Repair:

If none of the above steps resolve the issue, it’s advisable to seek professional help. Apple Stores or authorized service centers can diagnose and repair hardware-related problems.

8. DFU (Device Firmware Update) Mode:

DFU mode is a state in which your iPhone can communicate with iTunes or Finder without activating the boot loader. This mode is often used for advanced troubleshooting and can help address deep-seated software issues. Follow these steps to enter DFU mode:

  1. Connect your iPhone to your computer and open iTunes (or Finder on macOS Catalina and later).
  2. For iPhone 8 and later models: Quickly press and release the Volume Up button, then quickly press and release the Volume Down button. Finally, press and hold the Side (or Power) button until the screen goes black.
  3. While holding the Side button, press and hold the Volume Down button for 5 seconds. Then release the Side button while continuing to hold the Volume Down button for another 10 seconds. Your screen should remain black if you’ve successfully entered DFU mode.
  4. iTunes or Finder should detect your iPhone in recovery mode, and you can attempt to restore or update your device.

9. Display Calibration:

In some cases, display calibration settings can lead to visual anomalies, including lines on the screen. To recalibrate your display settings, follow these steps:

  1. Go to Settings > Display & Brightness.
  2. Tap on “Color Filters” and toggle the switch to enable it.
  3. Choose the “Color Tint” option and adjust the hue and intensity sliders to create a subtle color shift.
  4. Disable the “Color Filters” toggle to return to the default display settings.

10. Graphic Hardware Test:

Apple provides a built-in diagnostic tool to test your device’s hardware components, including the graphics chip. To run a diagnostic test:

  1. Turn off your iPhone.
  2. For iPhone 7 and later models: Press and hold the Volume Down button while connecting your iPhone to your computer. Keep holding the Volume Down button until you see the recovery mode screen in iTunes or Finder.
  3. Follow the prompts to run the diagnostic test and identify any hardware issues.

Preventing Future Occurrences

How To Fix Lines on iPhone Screen
How To Fix Lines on iPhone Screen

To prevent lines on your iPhone screen from reoccurring, consider these practices:

  1. Use a Protective Case: A sturdy case can help absorb the impact of accidental drops, reducing the risk of physical damage.
  2. Avoid Overheating: Avoid exposing your iPhone to extreme temperatures or direct sunlight for extended periods.
  3. Regular Software Updates: Keep your iPhone’s software up to date to ensure it benefits from the latest bug fixes and improvements.
  4. Handle with Care: Be cautious when handling your iPhone to prevent accidental drops or impacts.


The appearance of lines on your iPhone screen can be a frustrating experience, but with a systematic approach to troubleshooting, you can often identify and resolve the underlying issue. Whether it’s a software glitch, hardware malfunction, or physical damage, the steps outlined in this guide can help you regain the optimal functionality of your device. If all else fails, seeking professional assistance is the best course of action to ensure a proper diagnosis and repair. Remember to take preventive measures to keep your iPhone in good condition and minimize the likelihood of encountering similar issues in the future.

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