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My phone screen is showing black horizontal lines across the display. The lines may appear all the time or randomly, and they affect screen visibility and normal usage.
I’ve already tried restarting the phone, but the issue still remains. What could be causing the black horizontal lines, and how can I fix them?
Black horizontal lines on a phone screen are usually caused by either a software glitch or hardware/display damage. You can try these fixes:
Restart the phone first
Check if the lines appear in screenshots
If they do, it may be a software/GPU issue
If they don’t, it’s likely a screen hardware problem
Boot into safe mode to see if an app is causing it
Update the phone software
Reduce screen refresh rate (if supported)
Gently press around the screen edges only if the display connector may be loose
Factory reset as a last software troubleshooting step
Common hardware causes:
Dropped phone or pressure damage
Faulty OLED/LCD panel
Loose display connector
Water or heat damage
If the lines remain after restarting/resetting, the screen usually needs repair or replacement.