The appearance of stripes, lines or artifacts on the smartphone screen Android is one of the most alarming malfunctions that users encounter. This visual distortion may appear as a vertical or horizontal line of any color: white, pink, green, or black line that does not disappear after rebooting the device. This problem radically reduces the ease of use of the gadget, making viewing content or entering text almost impossible.
Before taking the device to a service center or looking for a replacement, it is necessary to conduct a thorough diagnosis. In some cases, the “lines” are the result of a software glitch that you can fix yourself, while in other situations it is a direct signal of physical damage display matrices or the loop. Understanding the nature of the defect will save you time and money, allowing you to choose the right repair strategy.
In this article we will look at all the possible causes of artifacts on the screen and provide step-by-step guide for eliminating them. We will analyze methods from simple soft reset to complex manipulations with the engineering menu, and will also tell you when independent intervention is no longer pointless.
Diagnostics of the type of defect: software or hardware failure
The first step in fixing a problem is to determine its source. Lines on the display can be caused by either a temporary operating system glitch or permanent damage to electronic components. To understand what you are dealing with, you need to carry out a number of simple tests that do not require special tools.
Try to take a screenshot of the screen at a time when the lines are visible. Transfer this photo to your computer or other device. If there are no lines in the screenshot, but there are lines on the phone itself, this is a sure sign of a hardware failure. In this case, the problem lies in the physical layer: display module, connector or video controller. Software errors are displayed identically on the screen itself and on the pictures taken.
Another verification method is to enter recovery mode (Recovery Mode). Reboot your phone into this mode using a combination of buttons (usually Volume Up + Power). If the lines persist even in the recovery menu, where the main shell is not loaded Androidthen the likelihood of a failure is minimal. This indicates that the signal from the processor to the matrix is distorted at the physical level.
⚠️ Attention: If the lines appeared immediately after the phone fell or got wet, do not try to warm up the device or disassemble it yourself without experience. Moisture could cause a short circuit, and power supply could permanently damage the board.
Software methods for eliminating artifacts
If diagnostics show that the problem may be related to software, you should start with the least invasive methods. Sometimes the graphics driver or system cache may conflict, causing the image to not display correctly. Rebooting the device in safe mode will help eliminate the influence of third-party applications.
To enter safe mode, you usually need to hold down the power button, and then long-press the “Power off” item on the screen until the corresponding request appears. In this mode, only system applications are loaded. If the lines disappear, then one of the applications you installed is to blame, perhaps requiring superuser rights or changing display settings.
Clearing the partition cache is also an effective method. To do this, you need to enter the menu Recovery and select item Wipe Cache Partition. This procedure does not delete your personal data (photos, contacts), but erases temporary system files that may have been damaged after the firmware update. After cleaning, select the item Reboot System Now.
- 🔄 Completely reboot the device by holding the power button for more than 10 seconds.
- 🛡️ Check for system updates in the menu
Settings → About phone → Software update. - 🗑️ Uninstall recently installed applications, especially those that control brightness or color rendering.
- 🔋 Make sure that the battery charge is sufficient, as low voltage can cause screen glitches.
Before performing a factory reset, be sure to back up all important data to cloud storage or on your computer, since this process will delete all information from the internal memory.
Resetting to factory settings as a last resort software measure
When simple methods do not help, a radical but effective method remains - a complete reset of the device to factory settings (Factory Reset). This procedure will return the phone to the state it was in when you purchased it, erasing all user data, settings and applications. This eliminates any software conflicts at the operating system level.
You can perform a reset through the settings menu if the screen is at least partially responsive to touches. Go to section Settings → System → Reset settings → Delete all data. If the sensor does not work, use a combination of buttons to enter Recovery Mode and select item Wipe Data/Factory Reset, confirming the action with the volume buttons.
After the process is completed, the phone will reboot and will begin the initial setup. Take a close look at the screen during the welcome phase. If the lines disappeared, the problem was software. If artifacts remain even on the manufacturer’s logo during the first boot, this is a clear diagnosis: equipment replacement is required.
☑️ Preparing for a full reset
Hardware reasons: cable, matrix and controller
In the vast majority of cases, persistent lines on the screen are a result of physical breakdowns. The most common reason is separation or damage display cable. The cable connects the motherboard to the screen, and even a microscopic violation of the contact leads to the loss of some of the signals responsible for image formation.
Another common culprit is the LCD matrix or OLED panel itself. Shock, pocket pressure, or manufacturing defects can damage the crystals inside the screen. In such cases, the line often has a clear geometric shape and a constant color. Repair in this case is only possible by completely replacing the display module.
Rarely, the problem lies in the graphics controller on the motherboard. If the phone was subjected to severe overheating or shock, the chip could come off or the soldering could fail. Diagnosis of this malfunction is complex and requires special equipment in a service center. Attempts to warm up the board at home (“hair dryer method”) often lead to the final death of the device.
| Line type | Probable cause | Difficulty of repair | Cost (guideline) |
|---|---|---|---|
| Thin color stripe | Damage to the cable or matrix | High (screen replacement) | $$ - $$$ |
| Flickering horizontal lines | Problem with controller or power supply | Medium (board repair) | $$$ |
| Black spots with lines | The internal glass of the matrix is broken | High (screen replacement) | $$ - $$$ |
| Lines disappearing when pressed | Bad contact of the cable | Low (reconnection) | $ |
⚠️ Attention: Prices for repairs and availability of spare parts may vary depending on your smartphone model and region. Before contacting the service, check the current cost of work with the specialist.
Why can lines appear only when heated?
If lines appear after a long game or conversation, this may indicate thermal expansion of the contacts. When heated, the metal expands, and poor contact in the cable or solder is temporarily restored or, conversely, lost. This is a complex defect that requires professional soldering.
Temporary solutions and the method of “massaging” the screen
There is a folk method that sometimes helps to temporarily remove lines if the problem is caused by poor contact of the cable. It consists of a careful physical impact on the area where the display is connected. Usually the cable is located at the top of the smartphone, behind the screen frame.
Try to gently press your finger on the top border of the screen or on the back cover in the area corresponding to the cable connection. Movements should be smooth, without excessive force, so as not to completely crush the matrix. If, when pressed, the lines change color, flicker or disappear, the diagnosis is confirmed: the problem is in the contact.
This method cannot be considered a repair. It only temporarily restores the connection. Over time the contact will deteriorate again and the lines will become permanent. Use this life hack only to have time to save data before going to the service or to make an emergency call.
- 👆 Gently press the top frame of the screen with your thumb.
- 🔄 Try to slightly bend the phone body (very carefully!) to change the tension of the cable.
- 🔨 Light tapping on the case in the area where the screen and frame meet sometimes helps to “shrink” the connector.
Physical impact on the screen gives only a temporary effect and does not solve the problem radically. This is a signal that the device requires disassembling and reconnecting the cable.
When the display module needs to be replaced
If neither a soft reset nor temporary manipulations produce results, the only way out is to replace the screen. Modern smartphones often use glued modules, where the glass, sensor and matrix are a single unit. Replacing only glass at home is impossible without special equipment (a separator and a laminator).
When choosing a spare part, it is important to focus on quality. The original (OEM) will provide the same brightness, color reproduction and fingerprint scanner operation as it was originally. Copies (Aftermarket) may cost less, but often have poorer color reproduction, lower brightness, and may not work correctly with the Always On Display function or under-screen fingerprint scanner.
The replacement process requires skills in working with small electronics. It is necessary to disconnect the battery, remove the old fasteners, carefully peel off the old module (often heated) and install a new one. Errors at any stage can lead to damage to new parts or the motherboard.
⚠️ Attention: Replacing the screen yourself may void your official warranty for your smartphone. If the device is still under warranty, contact the manufacturer's authorized service center.
When purchasing a new screen, check the package contents. High-quality modules often come complete with removal tools and new adhesive frames to seal the case.
Prevention of screen defects
To extend the life of the display of your Androidsmartphone, it is important to follow the operating rules. The main reason for the appearance of lines is mechanical impact. The use of protective glass and a durable case creates a buffer zone that absorbs impact energy when dropped.
Avoid overheating of the device. Prolonged exposure to high temperatures destroys the adhesive base of the matrix and can damage electronic components. Do not leave your phone in the sun, on the dashboard of a car, or near heat sources. You should also protect your gadget from sudden temperature changes that cause condensation inside the case.
Check the condition of the case regularly. If the phone has damage to the frame or cracks on the back cover, dust and moisture can get inside, which over time oxidize the contacts of the cable. Timely repair of minor damage to the case will prevent serious screen damage in the future.
Is it possible to remove lines on the screen with a app from the Play Market?
No, applications that promise to “fix” the screen programmatically are fraudulent. They can only reproduce colors for calibration or mask a defect, but are not able to restore the physical connection of the cable or broken pixels of the matrix.
Why did the lines appear again after replacing the screen?
This may indicate low quality of the new spare part, damage to the connector on the motherboard during replacement, or the presence of cracks on the board itself. It is also possible that the problem was not in the screen, but in the graphics chip.
Does a discharged battery affect the appearance of stripes?
Yes, at a critically low voltage, the battery cannot provide stable power to all components. The video controller may not work correctly, causing artifacts. Charge the phone and check the screen again.
Can I use the phone with lines on the screen?
Technically it is possible if the sensor works. However, the defect may progress: the line may widen or the screen may go completely dark. It is recommended that you back up your data as soon as possible.
What are “dead pixels” and are they different from lines?
Dead pixels are individual dots that do not change color (black, white or color). Lines are rows of bad pixels or a data signal disruption. Repair in both cases most often requires replacing the module.