If you have an OLED screen, it likely has some burned-in pixels on it, known as a screen burn-in
After two years or more, sometimes up to 4 years, so that the problem becomes prominent, as a result of repeated use, such as the notification menu or control buttons and the keyboard are the most common ones. I mean even if you do not use it, you will see its effects, especially against the white background
⭕ To check the problem, put a completely white image and increase the brightness level until you see the distortion,
⭕ For an OLED screen, that means AMOLED, super AMOLED, POLED... To produce a white light, the screen activates three different sub-pixels in close proximity to each other.
⭕ Each sub-pixel produces a different color: red, blue, and green. Together they look white.
On smartphones, red sub-pixels are the most durable, followed by green. Blue colors wear out the fastest.
When you see burn-in, it's often caused by blue sub-pixel weakness and discoloration that makes the screen appear too yellowish or reddish.
⭕ There is no solution to this problem, and some methods on the Internet are useless, including burning all parts of the screen until it becomes consistent, but it makes matters worse
✅ There is no 100% way to avoid the problem, right? Tips to extend the life of the screen, capable of more than 4 years, and remain convenient:
Avoid changing brightness suddenly and quickly
Avoid using the phone while charging because the temperature rises
Change the background and the location of the icons from time to time
Avoid using the maximum brightness level for a long time
⭕ AMOLED screens try to alleviate the problem by making the blue pixels that deteriorate more quickly, which makes it consume less current while working and relieves stress.
⭕ Some phones that you have to check, most of them are old, such as:
Galaxy S/Note series, oneplus phones, iPhone X and above without Xr/11 and others with OLED screen
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