Originally Posted by Siwandroid
On the BLUE and GREY i could see that or typing *#0*# then checking only blue is affected and not RED, GREEN.
Thanks you mate for your informations
That is correct, as blue is the color that ages the fastest. It's not basically burn-in but rather the different aging of the subcolors. Samsung chose to make a diamond-shaped Pentile screen for the SGS4, like shown here:
Where a "normal" RGB, non-Pentile, screen will usually have pixels like the one of the left below. The one on the right is another type of Pentile screen, this time without the diamond-like structure as on the SGS4.
You can however clearly see that the blue subpixels are much larger. Done on purpose as they age faster. So this way the burn-in will be a bit less apparent as they will still emit more light after a while as they would when they were the same size as for example the green ones.
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