DisplayMate, as usual, has analyzed the screen of the new iPhone X, and has praised the quality of the screen that Apple has added to its smartphone in many respects, and has described it as "The most innovative and best performing display" found in a smartphone. It even goes so far as to congratulate Samsung for developing and manufacturing this outstanding OLED display for the iPhone X.
The aspects in which this new display sets a new record include color accuracy, overall brightness, contrast ratio, and contrast in ambient light. It also stands out as the one with the least reflectance and the least variation in brightness at different angles.. We present all the information offered by DisplayMate below.
The screen of the iPhone X, with a size of 5,8 inches and OLED type, has a 19,5: 9 aspect ratio, 22% higher than the proportion of the previous terminals (16: 9), with a resolution 2,5K (2436 × 1125) and 458 pixels per inch. They offer sharper images at this resolution and notes that "It is absurd to offer higher resolutions or pixel density because the human eye will not notice any difference".
Regarding the viewing angle, displayMate highlights that the iPhone X suffers from a lower loss of brightness with viewing angles of 30º if we compare it with LCD screens, with "Very Good" and "Excellent" ratings for color changes with different viewing angles. The colors used by the iPhone X comprise the sRGB / Rec gamuts. 709, used for the most common content, and the new DCI-P3 used in 4K Ultra HD televisions. The change between both ranges of colors is done automatically depending on the content.
As a result, iPhone X always shows the correct colors, neither oversaturated nor undersaturated. The smartphone thus has the highest color accuracy they have ever tested, with a screen that is visually perfect. What makes this screen "the perfect screen" is something called "Screen Calibration Accuracy", which gives the OLED screen superb precision, with extremely high performance. You have more information in this link.