The iPhone X is the first iPhone that has an OLED screen. A completely new technology for Apple on mobile devices (although it was already in the Apple Watch). And is that despite its advantages in lighting, power consumption and contrast, OLED screens have certain disadvantages.
Apple has wanted to warn users about it
On a new support page, Apple discusses the problems you may suffer from the OLED screen. Although in reality more than problems are normal behaviors, it does not mean that it is a disadvantage. The OLED screen of the iPhone X has two main problems, found on any OLED screen.
The first of them has to do with the colors that change their tonality in concrete angles. If we trust from very wide angles and not perpendicular to the phone, we can see how the colors on the screen change slightly.
If you see an OLED screen out of angle, you may notice small changes in color and tonality. This is a characteristic of OLED technology and is a normal behavior.
On the other hand, we must be careful with the burning of the screen. OLED screens, by exposing for an extended time an image on the screen, the areas where it is exposed, the LEDs usually burn and remains as a kind of shadow on the screen.
With prolonged and prolonged use, OLED displays can also show small visual changes. This is also an expected behavior and may include ‘image persistence’ or ‘burned’, where the screen shows a slight remnant of an image even after a new image appears on the screen.
The OLED screen of the iPhone X is manufactured by Samsung but calibrated and completely designed by Apple. As a result, it does not have the saturated colors typical of Samsung phones. It is also expected that Apple has included improvements to avoid screen burns as much as possible.
Although this is something that only time will tell us, at the moment it is impossible to prove it.
More: Apple Support