Lines on Display
Complete troubleshooting guide for display lines and artifacts
Device Overview
The iPhone 12 is a flagship smartphone with advanced display and processing capabilities. This guide addresses common issues related to Lines on Display.
Symptoms
- •Horizontal lines across screen
- •Vertical colored lines appearing
- •Lines appear in specific areas only
Common Causes
- •Liquid damage to display
- •Physical impact damage
- •Display ribbon cable loose
Quick Fixes
- Perform a force restart: Hold power + volume down for 10 seconds
- Try the device in Safe Mode if lines appear randomly
- Check if recently installed apps cause the lines to appear
- Try a standard restart instead of force restart
- Check display settings for any app-specific adjustments
Advanced Solutions
- Reset all settings without losing data via Settings > General > Reset
- Enter recovery mode and restore iOS completely
- Perform DFU restore for full system reset
- Restore from previous iCloud backup
- Contact Apple Support if lines persist after software fixes
Hardware Checks
- •Inspect screen for physical cracks, damage, or impact marks
- •Check for signs of liquid damage or moisture inside device
- •Test if lines appear only in specific areas of screen
- •Look for loose internal components or misaligned display cable
- •Check if screen glass is intact without cracks or delamination
Software Checks
- •Verify iOS is updated to the latest available version
- •Identify which apps trigger the display lines to appear
- •Check for graphics driver or GPU-related error messages
- •Review pending system updates or background processes
- •Look for recently installed apps that might affect display rendering
Prevention Tips
- •Keep iOS updated to the latest version
- •Avoid installing apps from untrusted sources
- •Protect device from physical damage and moisture
- •Regularly backup data to iCloud or computer
- •Avoid extreme temperatures that can affect display
FAQs
Q: What cause lines on my iPhone screen?
A: Lines can be caused by software glitches, app conflicts, or hardware damage. Try performing a force restart first, and if lines persist, try uninstalling recently installed apps.
Q: Are display lines a hardware or software issue?
A: It depends. If lines appear only in certain apps, it's likely software. If they appear across all apps, it suggests a hardware display problem that may need professional service.
Q: How do I know if display lines are permanent?
A: Perform software troubleshooting steps first. If lines remain consistent across restarts and all apps, and don't improve with iOS updates, the display likely needs hardware repair.