How to Fix Lines on a Samsung Phone Screen: Step-by-Step Guide

Introduction

If you’ve noticed vertical or horizontal lines appearing on your Samsung phone screen, you’re not alone. This issue is fairly common and can range from thin colored stripes to thick white or black bars running across the display. While sometimes it’s just a software glitch, in most cases it points to hardware problems like a damaged screen, loose connections, or water damage.

At iRepair Experts Brisbane, we see this problem often in Galaxy S, Note, and A-series models. In this guide, we’ll explain why Samsung screens develop lines and walk you through the step-by-step fixes you can try at home. If those don’t work, we’ll show how professional repair can solve the issue permanently.

Common Causes of Lines on a Samsung Screen

1. Physical Damage

   • Drops and impacts can crack the AMOLED or LCD layers, creating permanent vertical or horizontal lines.

   • Even if the glass looks intact, the inner display may be damaged.

2. Loose or Damaged Display Connector

   • Inside the phone, the screen is linked to the motherboard by a flex cable. If it becomes loose after a fall, you’ll often see colored lines or flickering.

3. Water or Moisture Damage

   • Liquid entering the phone can corrode display circuits, causing flickering or lines across the screen.

4. Software Glitches

   • Rarely, a buggy update or malfunctioning app may cause temporary display artifacts.

5. Motherboard or GPU Faults

   • If replacing the screen doesn’t solve the issue, the problem may lie in the motherboard’s graphics chip (IC).

Step-by-Step Fixes for Samsung Screen Lines

Step 1: Restart Your Samsung Device

• Hold the Power button and select Restart.

• If the lines disappear, it was likely a minor glitch.

• If they return, move to the next step.

Step 2: Boot into Safe Mode

• Hold the Power button → Tap and hold Power Off → Select Safe Mode.

• Safe Mode disables third-party apps.

• If the lines vanish, an app may be causing the issue. Try uninstalling recently added apps.

Step 3: Update Your Software

• Go to Settings > Software Update > Download and Install.

• Updates often fix bugs that affect display rendering.

Step 4: Check for External Damage

• Inspect your screen closely under good light.

• Look for fine cracks, discoloration, or swelling near the frame.

• If the glass is damaged or the lines move when you press the screen, it’s likely a hardware issue.

Step 5: Test with Screenshots

• Take a screenshot (Power + Volume Down).

• View the screenshot on another device.

  • If the lines appear in the screenshot → it’s a software problem.

  • If the screenshot looks fine → the issue is with the physical display.

Step 6: Professional Repair Solutions

If none of the above steps fix the problem, it’s time for expert repair. At iRepair Experts Brisbane, we provide:

• Samsung Screen Repair – Solves cracked or internally damaged displays.

• Connector Repairs – Re-seating or replacing loose/damaged display flex cables.

• Motherboard Repairs – Micro-soldering for faulty GPU/IC chips.

• Water Damage Treatment – Cleaning corrosion and replacing affected components.

Samsung Screen Line Repair Costs in Brisbane

👉 All repairs at iRepair Experts include a free diagnosis and a 12-month warranty for peace of mind.

Tips to Prevent Screen Line Issues

• Always use a protective case and tempered glass to reduce damage risk.

• Avoid exposing your Samsung device to water or extreme humidity.

• Use only original or certified chargers to prevent voltage spikes.

• Keep your phone updated to the latest software version.

FAQs

1. Can I fix Samsung screen lines at home?
You can try restarting, updating, or Safe Mode. But if the lines are from hardware damage, only a professional repair will work.

2. Will a factory reset fix screen lines?
Only if the issue is software-related. For hardware damage, a reset won’t help.

3. How do I know if it’s hardware or software?
If lines show up in screenshots, it’s software. If not, it’s the physical display or connectors.

4. How long does a Samsung screen repair take?
At iRepair Experts Brisbane, most screen replacements are completed same day, often in 1–2 hours.

Key Takeaways

• Lines on Samsung screens are often caused by hardware damage, loose connectors, or water ingress.

• Restarting, Safe Mode, or updates may fix temporary glitches.

• If the issue persists, screen replacement or professional repair is needed.

• At iRepair Experts Brisbane, we provide fast, same-day Samsung screen repairs with a 12-month warranty.

Final Call to Action

Don’t let lines on your Samsung screen affect your daily use. Visit iRepair Experts Coorparoo or paddimgton for a free diagnosis and same-day repair. Call us today at 0731542890 or book online to restore your Samsung to perfect working condition.

👉 [Book Your Samsung Repair Today]