If your Samsung Galaxy S20, S21, S22, or S23 is flashing, flickering, or turning green like it’s been cursed — you’re not alone. Many users have reported weird, random screen glitches. The good news? The Reddit community has found some real fixes that work. Here’s a complete, humanized guide (with a pinch of humor) to help you fix it.
What Do These Glitches Look Like?
- Green or white screen tint
- TV-static-like lines and flashing
- Screen flickering, especially at high brightness
- Ghosting or double images
One user described their screen going “fully greenish/white” while others saw flickers and pixel noise. It’s frustrating — but fixable.
Why Is This Happening?
From what Reddit users and tech troubleshooters are seeing, the cause is usually one of these:
- Loose or damaged flex cable (connector between screen and motherboard)
- Overuse of high refresh rate (120Hz)
- Software bugs or Android updates gone wrong
- Wear and tear on older devices
Fixes That Actually Work (According to Reddit)
1. Flex Cable Repair or Screen Replacement (Hardware Fix)
Multiple Redditors said a screen replacement isn’t always needed. A flex bonding repair — where the technician reseats or re-solders the ribbon cable — often fixes the issue for a fraction of the cost of a new display.
Redditor says: “My S20 Ultra went fully greenish/white… A flex cable repair solved it. It’s been perfect for over a year now.”
Take your phone to a trusted repair center and ask about flex cable or “bonding” fixes. It’s cheaper and can last longer than you’d think.
2. Lower Refresh Rate to 60Hz
This is a great temporary fix that helps many users:
- Go to Settings > Display > Motion smoothness
- Switch from Adaptive (120Hz) to Standard (60Hz)
This reduces the load on your GPU and can stop flickering or screen tearing. If you’re a gamer or love smooth scrolling — sorry. But your screen will thank you.
3. Pressure Trick (Temporary Fix Only!)
Sounds silly, but Reddit is full of users who swear this works — at least for a while.
“Gently press on the area near the power button or around the screen’s edge for 10–15 seconds. My green screen corrected itself right after.”
Don’t go Hulk-smashing your screen. Light pressure only. This usually shifts a loose connector briefly back into place. But yes, it’s a band-aid fix.
4. Safe Mode & Factory Reset (Limited Use)
Try booting into Safe Mode to rule out third-party apps:
- Hold the power button > Long-press Power off > Tap Safe Mode
If the glitches stop, it may be a rogue app. If they continue, it’s likely hardware-related.
Factory Reset: Only try this if you’re sure it’s not hardware and you’ve backed up everything:
- Settings > General Management > Reset > Factory Data Reset
Note: Most users report that a factory reset didn’t fix this issue — so don’t get your hopes too high.
Can Samsung Fix This?
In some countries, Samsung will replace glitching screens for free — especially if your phone has the infamous “green line” issue. But this varies by region, and not everyone qualifies.
We recommend:
- Contacting Samsung Support directly
- Asking about display service programs (even if your warranty expired)
When Should You Replace the Screen?
If your screen is fully unresponsive, green-tinted, or flickering to the point of unusability — and you’ve tried everything above — it might be time to replace the screen or phone entirely.
Look for local technicians who can repair the ribbon cable first. If that fails, get quotes for screen replacement. As of 2025, S20–S21 series screen repairs can range from $100–$250 (USD equivalent).
Quick Fix Summary
- Lower refresh rate to 60Hz
- Try Safe Mode or light pressure trick
- Ask about flex cable repair instead of full screen replacement
- Contact Samsung — they may fix it for free
Final Thoughts
It’s frustrating when a premium device acts like a strobe light. But with help from Reddit and this guide, you’re now armed with the most up-to-date fixes real users are using. Whether it’s a quick settings tweak or a proper flex cable repair, you’ve got options — and most of them won’t break the bank.
Still glitching? Drop your experience in the comments — your pain might just help someone else save their screen!