The OLED screen of the iPhone X lasts much longer without showing shadows compared to the Galaxy S7 Edge or Note 8 - NewCydiaTweaks

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Wednesday, January 3, 2018

The OLED screen of the iPhone X lasts much longer without showing shadows compared to the Galaxy S7 Edge or Note 8


One of the main novelties of the iPhone X, is its screen, which is not LCD for the first time in an iPhone, but OLED, a technology that for years can be found in Android smartphones but that until now Apple had never used. The reason was simple; despite being screens that offer greater contrast and more efficient energy consumption in general, presented a number of problems unacceptable to Apple, such as a representation of very false color, with very exaggerated and unnatural tones, or shades in general very green or bluish They also present the problem of burned pixels, shadows that appear on the screen after continued use of them. Until several years have passed and OLED screen technology has improved, Apple has not made the leap to this technology. They have waited for the time that has seemed right to start using it, and that time has been at the end of 2017, for now only on the iPhone X, but most likely will be on all or almost all iPhone models in the future.
A test performed on the screen of the iPhone X, shows that Apple has done the homework to avoid the famous shadow effect that all OLED screens suffer. It is one of the weak points of this technology, which offers so many advantages over LCD screens but also has its disadvantages. In the image that you can see below these lines, we can see the screen of a Samsung Galaxy S7 Edge in a store, where you spend the whole day showing a video with a demonstration of its functionalities. It is a video that repeats itself constantly for many hours, which means that for a long time it repeats the same image in some parts of the screen. When the same image remains fixedly displayed in the same pixels of the screen,these lose brightness or color  ( burn ), resulting in shadows that appear when viewing anything else .
Screen of a Samsung Galaxy S7 edge with shadows
This problem, for now, can only be alleviated in part, with small tricks such as ensuring that each pixel does not always remain exactly the same color and brightness for a long time. Although we do not perceive it, Apple has implemented on the screen of the iPhone X a system that periodically alters the content of the image that shows each pixel very slightly, in a change so subtle that it can not be perceived at a glance. This way, you can avoid these types of problems for a long time.
Screen of a Samsung Galaxy S7 edge with shadows
However, even with this type of tricks, the individual pixels of the OLED screens end up burning irremediably. Today we learn that in some Android smartphones this happens much earlier than in the iPhone X ... and yes, it also happens in the iPhone, but to a much lesser degree.
How long is it that can hold on a pixel of the OLED screen of an iPhone X without burning? - That is the question that many of us ask ourselves and that now the South Korean web Cetizen has answered, doing an empirical test that shows to what extent Apple has invested effort in getting the OLED screen of an iPhone X does not present this type of shadows in a much longer than the life of the terminal itself. Before they appear, we probably have already bought another smartphone ... or two, or three ...
What they have done has been to compare an iPhone X with a Galaxy Note S8 and Galaxy S7 Edge , two of its main rivals in the market, to see which of them appears before the dreaded shadow after many hours showing without pause the same image in your screens . The result will please many iPhoneros; The iPhone X began to show shadows on its screen after 510 hours showing the same image , while its two rivals showed shadows on their screens much earlier .
OLED screen test of an iPhone X compared to a Samsung Galaxy S7 and Note 8
As we see in the image, the iPhone X has a small horizontal lines in an image with a flat gray background . Your rivals clearly show the web logo that makes the test.
Lines indicating burns of pixels on OLED screens
In this other image, with more hours, it is much more clearly seen how the iPhone X also begins to show the logo, although to a much lesser extent compared to the S7 Edge or Note 8.
OLED screen test of an iPhone X compared to a Samsung Galaxy S7 and Note 8
So that we understand well how this problem affects, that same iPhone 8 with its screen with some pixels burned after 510 hours lit without stopping showing the same image, shows these shadows with the Camera App, when taking a picture.
iPhone X with burned pixels on its OLED screen
As we can see, they can be seen in very dark areas or very clear areas, but in general they do not prevent the normal use of the terminal. To put all this in context, 510 hours are more than 21 days in a row , with their nights, in which the screen shows exactly the same image. That means that as long as we do not show the same image continuously for three weeks , we can rest assured that the iPhone X screen will always look good, without those shadows. It can be said that Apple has solved this problem of OLED screens when it has started to use them on the iPhone.
The funny thing is that this OLED screen is manufactured by Samsung Display, the subsidiary of the huge conglomerate of South Korean companies that is Samsung, the same manufacturer as the screens of S7 Edge and Note 8. Why are not these screens as good as the of the iPhone X if they are manufactured by the same company? - The answer is easy. The screen of the iPhone X is made by Samsung Display, yes, but they have done following very specific specifications of Apple, which has tested, proposed different ways to manufacture them and, very surely, registered all that in patents and confidentiality agreements so that that technology does not leakto the smartphones of the competition. Many of us find it hard to believe that Samgsung Display will not use such methods in future OLED screens for Samsung smartphones in the future, but for now, there is a paradox that the main competition of the iPhone X makes better OLED displays for its rival what he does for his own smartphones .

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