How to Fix the Green Line of Deathon Your iPhone Screen
That sudden vertical green line on your iPhone screen? It's the dreaded "Green Line of Death," and it's usually caused by water damage or a busted display. We'll walk you through whether you can fix it yourself or if it's time to call in the pros.
Key Takeaways
- Most water damage symptoms appear within 24-48 hours of exposure
- Apple recommends air drying for at least 5 hours before attempting to use your iPhone
- If symptoms persist after 48 hours, contact Apple Repair for professional assessment
Table of Contents
1. What Is the "Green Line of Death"?
It's that unmistakable, razor-thin vertical green line that shows up out of nowhere on your iPhone's screen. It usually hugs the left or right edge and, here's the kicker, it won't go away even after a restart.
Telltale Signs of the Green Line
・A super-thin green vertical line, just one or two pixels wide, on the left or right side of the screen.
・It sticks around even after you restart your phone.
・Sometimes it even glows when your screen is locked and asleep.
・Over time, the line can get thicker or multiply.
・Your touch screen usually still works just fine.
This problem almost exclusively hits iPhones with OLED screens. We're talking iPhone X and newer Pro models, plus all iPhone 12 models and up. If you have an LCD model (like an iPhone 11 or SE), you're pretty much in the clear.
2. The 5 Main Causes of the Green Line
There are a few culprits behind the green line, but water damage is a big one.
When moisture seeps into the display panel, it can corrode the delicate wiring for the OLED pixels. This shorts out a specific column of pixels, forcing them to stay lit up in green. It can happen right after a dunk, or it might show up days or even weeks later.
The flexible cable connecting your screen to the main logic board can get damaged from a drop or pressure. If it's partially torn, the data signal for one column of pixels gets messed up, leaving it stuck on green.
Even if your screen isn't cracked, a hard drop can cause micro-fractures inside the OLED panel itself. This is a common cause, especially if you've banged the edge of your phone.
Once in a blue moon, a weird iOS bug or graphics issue can cause a temporary green line. In this case, a restart or an iOS update might actually fix it.
OLED screens are made of organic materials that degrade over time. On older models like the iPhone X or XS, we're seeing more reports of green lines just from old age.
3. DIY Checks and First-Aid Fixes
Before you rush off to a repair shop, try these steps. If it's just a software bug, you might be able to fix it yourself.
Self-Check Checklist
Force Restart Your iPhone
Press volume up, then volume down, then press and hold the side button until the Apple logo appears. If it's a temporary software glitch, this can sometimes clear it up.
Update to the Latest iOS
Go to Settings > General > Software Update. Apple has fixed green line issues with iOS updates in the past.
Take a Screenshot
If the green line doesn't show up in the screenshot, it's a hardware problem. If it *does* show up, it's a software issue. This is the single best way to diagnose the problem.
Reset All Settings
Go to Settings > General > Transfer or Reset iPhone > Reset All Settings. This won't delete your data, but you'll have to re-enter Wi-Fi passwords. It's a last-ditch effort to rule out a weird software setting.
The Screenshot Test is Your Best Friend
Real talk: if the green line isn't in the screenshot, it's 100% a hardware problem. No amount of software tweaking will fix it. You need a screen repair or replacement.
If the line *is* in the screenshot, an update or reset might just save the day.
4. What to Do If Water Damage Is the Culprit
If that green line appeared right after your iPhone took a swim, you've got water inside the display. Here's what to do, fast.
Green Line After Water Damage: Emergency Steps
Power It Off. Now.
Keeping it on with water inside is a recipe for disaster. It can cause corrosion to spread, creating more green lines or killing the screen entirely.
Dry the Outside, Then Eject Water from Speakers
Wipe down the entire phone, then use the WaterKick app to blast any water out of the speaker grilles. Getting water out of the speakers helps stop it from seeping deeper inside.
Let It Dry for 48+ Hours
Leave it in a well-ventilated spot for at least two days. If you're lucky and it's a minor leak, the moisture might evaporate and the green line could disappear.
Still There? Time for a Screen Replacement
If the line is still there after drying, the damage is done. The pixel circuits are corroded, and the only fix is a new display.
The Green Line Can Be a Ticking Time Bomb
Here's the scary part: your phone might seem fine right after getting wet, but corrosion can be slowly creeping inside. It's not uncommon for the green line to suddenly appear days or even weeks later. If you know your phone got wet and this happens, water is almost certainly the cause.
Running a water eject app and drying it thoroughly right away can help reduce the risk of this delayed damage.
5. When to Get It Repaired (and What It'll Cost)
Bottom line: the green line is almost always a hardware issue that requires a screen replacement.
Signs You Definitely Need a Repair
This confirms it's a hardware failure in the display panel. Software can't fix this.
It's not a temporary glitch; it's physical damage.
That's a clear sign of spreading corrosion or damage. If you wait, the whole screen could go.
How Much Will It Cost?
Screen Replacement Costs
At the Apple Store (Official Repair):
・With AppleCare+: ¥3,700 (screen damage deductible)
・Without AppleCare+: ¥42,800 to ¥56,800, depending on your model.
・If they find water damage, it might be classified as "other damage": ¥12,900 (with AppleCare+)
At a Third-Party Repair Shop:
・OLED Screen Swap: Roughly ¥15,000 to ¥40,000, depending on the model.
*Heads up: using a non-genuine screen might disable features like True Tone.
6. Checking for Apple Repair Programs
In the past, Apple has launched free repair programs for certain models plagued by the green line issue.
What to Check
1. Check Apple's Support Page for Active Programs
Head over to the Apple Repair Service page and see if your model is listed for any display-related programs.
2. Get it Diagnosed at an Apple Store
Even if there's no official program, if they determine it's a manufacturing defect (and not your fault), they might cover the repair for free, even out of warranty.
3. Bring Your Proof of Purchase
Having a receipt can speed things up, but they can usually check your warranty status using your Apple ID activation records.
Water Damage Can Disqualify You
Be warned: if the Liquid Contact Indicator (LCI) inside your iPhone has been triggered, they'll likely blame the issue on water damage, not a manufacturing defect. This will probably disqualify you from any free repair program. If you know it got wet, it's best to be upfront about it.
Prevent Further Damage by Ejecting Water
Even with the green line, you can still eject water from your speakers right now. Stop moisture from spreading and causing more problems — run a cycle with WaterKick.
🚀 Download for FreeiOS 17+ ・ Free ・ No Ads
7. Frequently Asked Questions
It'll almost certainly get worse. The line might get thicker, more lines could appear, and eventually, that whole section of the screen could just die. Even if it's usable now, it's best to deal with it sooner rather than later.
If it's intermittent, that points to a loose connection with the display cable. Changes in temperature or pressure can make it flicker. While it might not be a huge problem now, it's a good idea to get it fixed before the connection fails completely. It usually ends up becoming permanent.
Not directly. A screen protector or case won't cause the green line on its own. However, a really tight case could put pressure on the display cable, and a poorly designed waterproof case could trap condensation, leading to moisture damage.
You *can*, but we really don't recommend it. Replacing an OLED screen is a delicate job that requires special tools. Plus, if you use a non-Apple part, you'll likely lose True Tone and get a "non-genuine display" warning in your Settings.
No, WaterKick is an app for ejecting water from your speakers, not for repairing displays. However, if water damage is the cause, using WaterKick to get moisture out of the speaker grilles can help prevent that water from spreading to other components and making things worse. To fix the green line itself, you'll need a screen replacement.