What is burn-in?

Screen burn-in (also known as image persistence or image retention) happens when a particular image remains on the screen for very long periods of time without moving, causing something like a ghost image to remain on your screen when the image is gone. And oled phone screen will happened this also 

There are some things you can do to keep your iPhone X screen healthy longer and avoid serious image persistence issues that could really mess up your screen.

How to reduce potential burn-in issues?

Always keep iOS up to date - Apple uses software technology in the iPhone X to help combat potential burn-in effects. Whenever there is a new update, you should install it. Not only will you get new features, but there might also be a specific display screen issue that you'll be able to avoid.

Auto-Brightness actually does help - I know some people don't like auto-brightness because it can sometimes drastically change the brightness or dimness of your screen, but in the case of the iPhone X, auto-brightness can really benefit the long-term health of your screen.

Lower the length of time before your iPhone auto-locks - If you're not using your IPhone , your screen shouldn't just be on. If you're like me, you tend to use your iPhone, put it down for a minute, and pick it up again. You can adjust your auto-lock for a wide range of time. I suggest 30-seconds for most people and 1 minute for people that tend to use their iPhone intermittently and prefer it not to lock right away every time.

Don't keep a bright image on your screen for a long period of time - If you have a special clock app or fish tank app that you like to keep open on your iPhone all day long, consider not using it anymore on your iPhone X. If you really love it and don't want to give it up, you should, at least, lower your screen brightness while the app is open so that the image doesn't burn into your screen.

What to do if you see burn-in?
1.If you're seeing ghost images on your screen, there's a chance you accidentally caused a premature burn-in (that is, color shifting didn't happen naturally over the life of the screen). If it's new and didn't do much damage, you might be able to make it go away.

2.Use Recovery software to help recovery it （give me a reply for the software detail)

3.If the damage is bad, you'll probably have to replace your oled screen (or just live with it).
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