How do I fix green line on iPhone 14 screen?

You just described a possible hardware failure that occurred just after a software update.

While this is unfortunate, it is not uncommon.

However, only an Apple Genius can review the cause and provide a complete solution.

Therefore, I recommend service.

Service Checklist:

• iPhone service pricing.
• Check AppleCare Coverage.
• Get your iPhone ready for service.

Click ▶︎ Start a Repair Request.

Need more help?

• Call 1-800-APLCARE.
• Contact Support.
• iPhone Support.
• iPhone User Guide.

Click ▶︎ Check Repair Status. 🔧

Good luck! 👋🏼😉

1. You still see a Yellow/ Green/black screen after charging. Follow the steps in this article.
   1. You see a Yellow/ Green/black screen, but you can hear alerts, sounds, and vibrations.
      1. 
   2. The screen remains Yellow/ Green/black, but the device chirps when you unmute it and connect it to power.
   3. Your screen is on, but it doesn't respond when you tap, slide, or try other gestures. 
   4. You can't force your device to restart because a button is broken or stuck.
   5. Your device is stuck on the Apple logo, displays a solid color, or isn't recognized in iTunes.
   6. Contact Apple Support to set up service if you have any of the above issues:

1. Follow the Apple article to resolve the issue --> If your iPhone, iPad, or iPod touch won't turn on or is frozen ...
2. If not resolved, please follow the steps in the following link for support with this issue: If your iOS device restarts or displays the Apple logo or a spinning gear unexpectedly

Facing Green / Yellow Screen issues? Here's what worked for me:

1. Backup on iCloud/iTunes - If enabled daily, wait for the time of day when iPhone backs up automatically.
2. Try this --> Force restart iPhone - Apple Support

After the iPhone starts...

1️⃣ Backup on iCloud/iTunes

2️⃣ Log out of Apple ID

3️⃣ Erase (Keep eSIM Data)

❌ DO NOT restore from backups! Set up as a new iPhone. Wait 2-3 days - no issue! That Indicates...

✅ No hardware/ iOS issue

Now...

📦 Restore data gradually

🔍 Find app/settings causing the screen flickering