Google might need to recall the Pixel 2 XL because of Screen burn-in effect.

The most prestigious smartphone of Google, the Pixel 2 XL has some problem in its screen.
Many Pixel 2 XL users have noticed that this phone has horrible effect of screen burn-in.
Do you know what Screen burn-in effect is?
Screen burn-in, or ghost image, colloquially known as screen burn, is a permanent discoloration of areas on an electronic display such as a CRT display or an old computer monitor or TV set caused by cumulative non-uniform usage of the pixels.
See this image. In this image the screen is powered off but you can still see some words written in that, this is called screen burn-in effect
Screen-burn-in-effect-in-Google Pixel2 xl  
The problem appears to affect only larger 6-inch Pixel 2 XL and not in the smaller 5-inch Pixel 2. Though the Pixel 2 is manufactured by HTC and the Pixel 2 XL by LG, both phones use P-OLED displays sourced from LG Display. It's not clear why the smaller one doesn't have the blue color-shifting. LG's own phones with OLED screens have suffered from burn-in for years. The LG G Flex, the company's first phone with a flexible OLED display, was notorious for this defect.
See the another example of screen burn-in or the ghost image. You can see clearly the navigation buttons even if the power is off.
Screen burn-in-google's-pixel2XL
Can we do something?
  1. Maintain your display brightness as low as you can keep. Increased brightness requires more current and therefore shortens LED lifetimes.
  2. Shortest screen-off timer. Turning the screen off when you’re not using it will prevent static images from being displayed.
  3. Use a wallpaper with darker colors and change it every now and again.
  4. Use keyboards that offer darker themes so that you may prevent color degradation in the lower half of the display. 

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