iphone screen problem effect of instagram left on device

Hello sherminkhatamianfar,

Thanks for asking the Apple Support Communities for help with your iPhone X and seeing some visual changes.

This article talks about this, and offers some options to avoid this further: About the Super Retina display on your iPhone X, iPhone XS, and iPhone XS Max, and the Super Retina XDR display on your iPhone 11 Pro and iPhone 11 Pro Max - Apple Support

"If you look at an OLED display off-angle, you might notice slight shifts in color and hue. This is a characteristic of OLED and is normal behavior. With extended long-term use, OLED displays can also show slight visual changes. This is also expected behavior and can include “image persistence” or “burn-in,” where the display shows a faint remnant of an image even after a new image appears on the screen. This can occur in more extreme cases such as when the same high contrast image is continuously displayed for prolonged periods of time. We’ve engineered the Super Retina and Super Retina XDR displays to be the best in the industry in reducing the effects of OLED "burn-in."

• Avoid displaying static images at maximum brightness for long periods of time. If you have an app that keeps your display on when you aren’t actively using your iPhone you can temporarily reduce the brightness level using Control Center."

Thanks and have a wonderful day.