If you have come here desperate because A vertical or horizontal line has appeared on your mobile screenDon't worry: you're not the only one this has happened to, and in many cases there is a solution. Here's a Complete, updated guide based on the best reference resources to know why it happens, how to diagnose the source and all the steps (both software and hardware) that you can apply to try to eliminate those annoying lines and enjoy your smartphone again like before.
Why do lines appear on my mobile screen?
Vertical or horizontal lines on your mobile screen can appear for multiple reasons.The main causes can be grouped into two main categories: physical damage (hardware) and software problems. It's essential to identify the cause, as the solution will be radically different depending on it.
Most common causes of screen stripes
- Bumps, drops, or excessive pressure on the screen: A fall, even if you don't see the screen broken, can damage the internal part (LCD, OLED or flex).
- Damage from liquid ingress: If your phone gets wet, there may be short circuits or corrosion on the display connectors.
- Connector or flex cable problems: If the connection between the screen and the motherboard is loose or dirty, streaks may appear.
- Factory defects or non-original spare parts: Replacing the screen with a poor quality one or improper installation may cause lines.
- Software or firmware errors: A failed update, system bug, or conflicting application can trigger visual artifacts, such as streaks and smears.
- Overload or high temperatures: Overheating your phone can damage the GPU or circuitry, causing transient or permanent lines.
Less common causes include incompatibilities after an update, faults in the touch screen's integrated circuit, or problems resulting from the use of unofficial apps that alter the display.
How to differentiate if the problem is hardware or software
Before you rush to disassemble your phone or take it to the technical service, you should diagnose the origin:
- Do the stripes always appear (on the home screen, in apps, at startup, etc.)? If so, it is probably a physical failure.
- Do the stripes disappear or change when I open or close specific apps? It could be a software glitch or a faulty app.
- Does it only happen after turning on the phone after a fall, heavy pressure, or contact with water? Everything points to hardware.
- Did the lines appear after updating the system? The display firmware or drivers may be corrupted.
Remember that sometimes an internal fault can manifest itself intermittently. Therefore, it's advisable to perform various checks before taking drastic measures.
Getting Started: Quick Fixes for Phone Screen Stripes
Let's go over All alternatives, from the simplest ones that do not require technical knowledge to more advanced methods that can help you remove scratches from your phone:
1. Restart your mobile phone
In many cases, A simple reboot can fix temporary streaks caused by random OS or GPU errors.. Press and hold the power button to turn your phone on and off. If the problems persist, continue with the following methods.
2. Turn off and let the device rest
Sometimes the processor and components overheat. Leave your cell phone off for several hours to cool completely. Turn it back on and check if the streaks persist.
3. Full battery cycle
Perform a full charge cycle: Let the battery drain completely, then charge it to 100% and restart your phone. This can help resolve minor electrical issues.
4. Start the device in safe mode
Safe mode boots the system with the factory applications ignoring those that may be causing conflicts. To access:
- Press and hold the power button until the power off/restart option appears.
- Press and hold "Power off" for several seconds and the option will appear "Restart in safe mode".
- Confirm and wait for the phone to boot. If the lines disappear, the problem is with a recently installed app.
5. Update the operating system
Sometimes The manufacturer releases updates that fix bugs in the display driver or incompatibilities. Go to Settings > System > Updates and download the latest version.
6. Revert or delete the last update
Sometimes, visual errors can occur after a failed update. If the problem occurred after the update, go to Settings > System > Updates and look for the option uninstall recent updates if your manufacturer allows it.
Advanced solutions to remove vertical lines on your mobile screen
If the above options didn't work, it's time to address hardware issues or do more advanced testing:
Replacing the screen: When is it necessary?
If after a fall, blow or exposure to liquids, the screen has presented lines (white, green, black, colored), It is very likely that the only definitive solution is to replace the screen. Find the exact model of your phone and purchase an original or high-quality replacement part. You can find tutorials on YouTube for the replacement, although if you're inexperienced, it's best to go to a specialized technical service.
Pay special attention if the screen appears dark, has spots, or is completely unresponsive to touch: in this case, a replacement is essential.
Check and reconnect flex and connectors
El flex cable It is the one that connects the screen to the rest of the phone. If it has come loose after a blow or when disassembling it for repair (or battery replacement), may cause lines on the screenThe solution is to open the phone, disconnect the screen flex cable, clean it (by blowing on the connector if there's dust), and reconnect it firmly. If this step is difficult for you, it's best to leave the repair to professionals.
Gently press the screen
Sometimes Gently press with your fingertips around the screen and back cover It can help if the problem is a poor internal contact. If the lines disappear momentarily, it confirms a physical connection failure, but the definitive solution usually requires disassembling the phone and adjusting the connectors.
Change the touch circuit
The problem is not always in the LCD/OLED: sometimes the fault is in the integrated circuit that manages the touchThis can only be diagnosed and replaced by a technician, as it requires specific tools.
Reset your phone to factory settings
If you suspect the error is caused by an application, malware, system corruption, or after an update, restore the mobile to factory settings It may be the last option before repairing the hardware. Remember to back up your photos, contacts, and documents before proceeding, because this process delete all information.
To reset your phone:
- Go to Settings > System > Reset options > Erase all data (factory reset)
- Follow the on-screen steps, confirm, and wait for the reboot.
Other useful tests and tips to fix stripes on your mobile screen
- Avoid using aggressive diagnostic apps that can make the problem worse.
- If the line only appears using a specific app, uninstall it immediately.
- Check if the mobile has current warranty: Do not open the device before checking the conditions, as you will lose the right to official repair.
- If you suspect overheating, avoid charging it for hours or using it in the sun.
- Always try to use quality accessories and spare parts, especially if you're replacing the screen or battery.
Why do colored, green, or blotchy stripes appear on the screen?
Some vertical lines can be colored (red, green, blue) and are usually associated with:
- Panel pixel failure, common in OLED and AMOLED displays.
- GPU detachment or poor contact with the motherboard, especially after overheating or falls.
- Artifacts due to malfunction of the graphics software if they appear only in specific apps or after installing unofficial ROMs.
If colored lines appear and disappear, it could be an intermittent connection or software failure, so it's important to perform all of the above tests before replacing any components.
Is it worth repairing the screen or buying a new phone?
The decision depends on several factors:
- Spare part price and labor compared to the value of the mobile.
- Age and performance of the device.
- The complexity of the repair (some newer models require specific equipment to open them without damaging other components).
- Warranty or insurance available.
In most cases, if the mobile is recent and the fault only affects the screen, Repairing is more profitable than buying a new smartphoneAlways consult several quotes before deciding.
When to go to an official technician or service center
If none of the above solutions work, or you find that the line is persistent after a blow, wetting or obvious damage, contact an authorized technical serviceThey will check the condition of the internal components and can advise you on whether it's worth repairing or replacing your phone.
Vertical or horizontal lines on your phone screen are an annoying problem, but one that can be solved if you follow the diagnostic and testing steps. In many cases, restarting, updating, resetting, or checking connections can fix the problem without significant costs. If the problem is physical and requires a replacement, weigh the repair price against the age of your device. And remember: it's always better to prevent bumps and use protectors We regret any damage to the screen. If you have any questions or need personalized help, leave them in the comments so we can guide you based on your specific case.
