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Green Line On iPhone Screen: 4 Most Common Causes [& Fixes]

iphone apple
Image: Pexels

In the current digital age, smartphones have become a staple in our daily lives, providing an array of functionalities that significantly simplify tasks and communication. However, when these essential gadgets develop problems, such as a disruptive green line on your iPhone screen, it can hinder your experience. The green line issue is a relatively rare but known problem among some iPhone users.

This phenomenon often manifests as a persistent vertical or horizontal line across the display, impacting the overall functionality and aesthetics of the device. Understanding the root causes of this problem and identifying potential remedies can make a world of difference, potentially saving you time, effort, and even money on unnecessary repairs. In this guide, we will take a comprehensive look at the various causes behind the green line on iPhone screen issue and provide detailed solutions to help you rectify this problem.

Step By Step Guide On Causes Of Green Line On iPhone Screen (With Solutions)


1. Physical Damage

One of the most prevalent causes of a green line appearing on your iPhone screen is physical damage. This could result from inadvertently dropping your iPhone, exposure to harsh environmental conditions such as extreme temperatures or humidity, or even from undue pressure applied to the screen.

Such events can potentially damage the internal components responsible for displaying images, such as the OLED panel or the display controller. Damage to these components can disrupt the proper rendering of images on the screen, leading to the appearance of a green line.

green line on iphone screen
Image: Rawpixel

2. Manufacturing Defect

In some instances, the green line may arise from a manufacturing defect in the device. This was notably seen with the iPhone X, where a minority of devices displayed this issue due to a defect in the construction of the display assembly. Specifically, the issue was attributed to a potential problem with the electrical system controlling the logic board and display components. This type of fault is less common, but it is still a possible cause of the green line issue.

3. Software Glitch

Software glitches can cause a variety of issues, including the appearance of green lines on your screen. These glitches can occur from bugs in new software updates, or from conflicts between different software elements on your device. It’s also possible that an error could occur during a software update, causing a glitch that might result in the green line issue.

4. Outdated Firmware

Another possible cause of the green line issue is running outdated firmware on your device. In certain cases, older firmware versions might have unresolved bugs or compatibility issues with new apps or features. That could result in graphical errors such as the green line on your screen.


1. Restart Your iPhone

Restarting your iPhone is often the first step in resolving many types of software-related issues, including the green line problem. A restart effectively clears the device’s RAM, shuts down all running processes, and starts the system afresh. That will potentially eliminate any temporary glitches causing the green line on iPhone screen. Here is how to restart your iPhone:

  • Press and hold the side (or top) button and either volume button until the power off slider appears on your screen.
  • Drag the slider to turn off your device completely.
  • After the device has fully powered down, press and hold the side (or top) button again until the Apple logo appears, signifying the device is rebooting.
iphone table
Image: Pixabay

2. Update iOS

If restarting the device doesn’t resolve the issue, you should consider checking if your iPhone’s operating system is up to date. Running the latest version of iOS ensures that your device benefits from the latest features, improvements, and, most importantly, bug fixes that could resolve the green line issue. Here is how to check for updates and install them if available:

  • Go to Settings on your iPhone.
  • Scroll down and tap on “General.”
  • Tap on “Software Update.” If an update is available, you will see it listed on the screen with an option to download and install it.
  • Tap on “Download and Install” and follow the on-screen instructions to update your device.

3. Reset All Settings

If the green line persists even after updating your device, the next step to consider is resetting all settings on your iPhone. Resetting all settings won’t delete your personal data such as photos, apps, and contacts, but it will revert all system settings back to their default state. This includes network settings, system settings, and app settings, among others. This action might resolve any potential issues stemming from incorrect or conflicting settings. Here are the steps to reset all settings:

  • Navigate to Settings.
  • Tap on “General.”
  • Scroll down to the bottom and tap on “Reset.”
  • Tap on “Reset All Settings.” You will be prompted to enter your passcode to confirm your action.
  • Once you’ve entered your passcode, tap “Reset All Settings” again to confirm. Your iPhone will then restart with default settings.

4. Factory Reset

If the green line continues to appear on your iPhone screen even after trying all the above solutions, it might be necessary to perform a factory reset. A factory reset will erase all data and settings on your device and restore it to the state it was in when you first bought it. Before undertaking this step, ensure that you have a backup of all your important data. They will be deleted in the process. Here is how to perform a factory reset:

  • Go to Settings on your iPhone.
  • Tap on “General.”
  • Scroll down and tap on “Reset.”
  • Tap on “Erase All Content and Settings.” You will be prompted to enter your passcode to confirm your action.
  • Once you’ve entered your passcode, tap “Erase iPhone” to confirm. Your iPhone will then restart in its factory state.

5. Contact Apple Support

If you’ve tried all the steps outlined above and the green line persists, it’s highly likely that the issue lies with the hardware. In such cases, the best course of action would be to seek professional help. Contact Apple Support for further assistance or visit your nearest Apple Store or an authorized Apple service provider.


In conclusion, while an unwelcome green line on iPhone screen can undoubtedly be a cause for alarm, this guide provides a detailed roadmap to understand the potential causes and take appropriate steps to rectify the problem. By working systematically through these steps, you can diagnose the issue, implement a solution, and hopefully, restore your device to its normal state.

However, if the green line persists despite your efforts, reaching out to Apple’s professional support should be your next step. Ultimately, your iPhone is a complex piece of technology. While certain issues can be resolved at home, some situations require professional intervention. This guide offers a comprehensive approach to resolving the green line issue, fostering a better understanding and promoting effective troubleshooting of this common iPhone problem.

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