A flickering screen is hard to ignore. It might blink on and off, flash in bands, pulse at low brightness, or only misbehave when you open a certain app. Whatever form it takes, it makes the phone tiring to use, and it raises the worry that the display is on its way out.
Sometimes it is. Often it is not. Flickering has both software and hardware causes, and a few quick tests can tell you which one you are dealing with before you spend any money. This guide explains why your phone screen is flickering and walks through nine ways to fix it on Android and iPhone.
Why Is My Phone Screen Flickering?
A software glitch or bad update. The display driver or system interface can misbehave after an update, especially a recent one. This is a common reason flickering starts suddenly with no sign of damage.
Adaptive refresh rate. Many modern phones raise and lower the screen’s refresh rate to save battery. On some devices, that switching can show up as visible flicker, especially at low brightness or in certain apps.
Auto-brightness and brightness settings. Auto-brightness constantly adjusts the screen based on the light sensor. If the sensor is covered or confused, the screen can pulse up and down.
Screen dimming at low brightness. Many OLED screens dim by switching the pixels on and off very rapidly, a method called PWM dimming. For most people, it is invisible, but some notice it at low brightness, and it can feel like flicker or cause eye strain.
Read this: IPS LCD and OLED Display Differences Explained in Simple Terms
A problem app. A badly coded app, a game, or a video app that clashes with the graphics system can make the screen flash only while it is open.
Heat and low battery. Overheating or very low power can sometimes cause the display to behave erratically.
A damaged or loose display. After a drop, pressure, or water exposure, the display panel or its cable may be damaged or loose. Hardware flicker often comes with colored lines, ink-like spots, or a touchscreen that acts up.
First, Test Whether It Is Software or Hardware
Two simple checks save a lot of guessing.
The screenshot test. Take a screenshot while the screen is flickering, then look at the saved image. If the flicker does not appear in the screenshot, the problem is probably in the display itself, which points to hardware. If the screenshot shows the flicker or distortion, the issue comes from the software drawing the image.
The pressure test. Gently press near the edges and corners of the screen, or flex the phone slightly. If the flicker changes or stops, a loose connector or failing display is likely. Be gentle: do not bend or squeeze hard, since that can cause real damage.
Also notice when it happens. Flickering in one app suggests that app. Flickering everywhere, right after waking the phone, suggests the system or the display.
9 Ways to Fix a Flickering Phone Screen
1. Restart or force restart the phone.
A restart clears many temporary glitches. If the screen is too erratic to use, force-restart it.
- iPhone 8 and later: Press and release Volume Up, press and release Volume Down, then hold the side button until the Apple logo appears.
- iPhone 7: Hold the volume down and the side button together.
- iPhone 6s and earlier: Hold Home with the top or side button.
- Android: Hold the power button for 20 to 30 seconds, or on many Samsung phones, hold the Volume Down and the Side key for about seven seconds.
2. Adjust brightness and turn off auto-brightness.
Raise the brightness manually and see whether the flicker stops. Then turn off auto-brightness in Display settings and test again. If the flickering vanishes with auto-brightness off, a light sensor issue or a software bug is behind it. Make sure nothing covers the sensor near the top of the screen, such as a thick protector or a case lip.
3. Change the refresh rate.
If your phone has a high or adaptive refresh rate, switch it to a fixed, lower setting.
- Android: Look in Settings, Display, for a refresh rate or motion smoothness option, and choose the standard rate instead of adaptive.
- iPhone with ProMotion: In Settings, Accessibility, and Motion, you can turn on Limit Frame Rate, which caps the display at a lower rate.
If this fixes it, the issue is the refresh-rate switching, and a future update may correct it.
4. Turn off display add-ons
Features that tint or adjust the screen can conflict with each other. Temporarily turn off night mode, blue light filters, eye comfort modes, and dark mode, and check each in turn. This helps you find the one that triggers the flickering.
5. Update the system and your apps.
Manufacturers release patches for display bugs. Go to Settings and check for system updates, then update your apps from the App Store or Google Play. If flickering started right after an update, check the manufacturer’s support pages or forums to see whether other people report it, and look for a follow-up patch.
6. Find the app that causes it.
If the flicker only happens in one app, update or reinstall it. On Android, you can boot into safe mode to rule out all downloaded apps at once. On many phones, hold the power button, then press and hold “Power off” and confirm safe mode, though steps vary by brand. If the screen is steady in safe mode, remove recently installed apps one by one until the problem stops.
7. Disable hardware overlays (Android)
This is a developer setting that sometimes cures flickering caused by how the system composes the screen. First, enable Developer options by tapping the Build number in Settings, About phone, seven times. Then open Developer Options and switch on “Disable HW overlays.” This can slightly increase battery use and is not available on every phone, so turn it back off if it makes no difference.
8. Reset settings, then reset the phone if needed.
Start with a settings reset, which does not erase your photos, apps, or files. On iPhone, it is called Reset All Settings, and many Android phones offer a Reset Settings option. If that does not help, back up the phone and perform a factory reset, which clears deeper software corruption but erases the device. If the flicker survives a clean factory reset, hardware is almost certainly to blame.
9. Get the display checked
If the screenshot test pointed to hardware, or nothing above helped, have an authorized service center inspect the phone. A loose cable can be quick to fix, while a failing display panel needs replacing. Ask for a quote first and compare it with the value of your phone.
When to Worry?
Flickering after a fall, water exposure, or a crack is a hardware sign, and continuing to use the phone can make it worse. If the screen flickers and then goes dark, the display may be failing, and our guide on a black phone screen explains how to check whether the phone is still running so you can back up your data.
How to Reduce Flickering in the Future
- Keep the system and apps updated.
- Use a fitted case and a quality screen protector that does not cover the sensors.
- Avoid leaving the phone in hot places or using it heavily while charging.
- Protect it from drops and moisture.
- Back up regularly so a display repair never puts your data at risk.
Final Note
If your phone screen is flickering, do not jump straight to replacing it. Run the screenshot test, restart the phone, check brightness and refresh rate, update the software, and look at recently installed apps. Most flickering turns out to be software. When it is not, you will at least be able to tell the repair shop exactly what you have found.
