Oukitel WP1 Review

22 November 2018, 05:01:11

Oukitel WP1 Review
Our review unit is courtesy of Oukitel and you can buy it at a promotional price from Gearbest or from the Oukitel Global Store on AliExpress.

Display

Oukitel WP1 is equipped with a 5.5-inch on-cell IPS display with a resolution of 720 x 1440 pixels. Below you will find our measurements of the display of the WP1 review sample we've received from Oukitel. Ever since the early spring of this year, we have noticed that when we switch from one colour to a fully black screen, handsets with IPS displays need about 10 seconds to show the black they are capable of showing. During these 10 seconds, the screen gets darker and darker. That's why we have started making two measurements, in order to give a more realistic picture of the static contrast ratio, white and black luminance. The Single Frame measurements show the white and black luminance of a screen that shows 50% white and 50% black. The Separate Frames measurements show the white and black luminance of a fully white and fully black screen. Our measurements did not show any significant difference between the results from the two types, hence, we can conclude, that the display panel is of a slightly older generation.

A single frame, 50% white / 50% black

Brightness White luminance Black luminance Contrast Color temperature
100 % 554.155 cd/m2 0.611 cd/m2 907 : 1 10129 K
75 % 552.200 cd/m2 0.610 cd/m2 905 : 1 10179 K
50 % 453.135 cd/m2 0.497 cd/m2 912 : 1 10298 K
25 % 255.468 cd/m2 0.282 cd/m2 906 : 1 10612 K
0 % 34.732 cd/m2 0.039 cd/m2 891 : 1 11437 K
When the luminance is measured on a single frame that shows 50% white and 50% black, we get a maximum white luminance of 554.155 cd/m2, meaning the display is very bright. However, the black luminance is very high as well resulting in a static contrast ratio that's around 900:1. The temperature of the white point is extremely high - more than 10000 K, making the white look purplish.

Two separate black and white frames

Brightness White luminance Black luminance Contrast Color temperature
100 % 577.508 cd/m2 0.605 cd/m2 955 : 1 9986 K
75 % 575.24 cd/m2 0.607 cd/m2 948 : 1 10106 K
50 % 469.593 cd/m2 0.498 cd/m2 910 : 1 10174 K
25 % 264.458 cd/m2 0.282 cd/m2 938 : 1 10420 K
0 % 35.684 cd/m2 0.038 cd/m2 939 : 1 11180 K
When we measured the white and black luminance values on a fully white and a fully black display, we got only marginally higher white luminance values at all brightness levels. The maximum brightness in this occasion measures 577.508 cd/m2. The black luminance is also marginally higher at all levels compared to the one from the previous measurement. The static contrast ratio is again around the 900:1 level. The temperature of the white point remains unchanged - higher than 10000 K.
Peak brightness (100% APL)
UMIDIGI S2
625.524 cd/m2
Bluboo S8+
622.044 cd/m2
Xiaomi Mi 6
620.987 cd/m2
Asus ZenFone 3 ZE552KL
615.106 cd/m2
Blackview R7
610.649 cd/m2
Elephone S3
602.861 cd/m2
Doogee BL9000
601.022 cd/m2
Doogee S80
587.173 cd/m2
Gretel GT6000
584.349 cd/m2
Blackview P10000 Pro
581.657 cd/m2
Oukitel WP1
577.508 cd/m2
Doogee Y300
577.078 cd/m2
Doogee BL7000
570.028 cd/m2
UMIDIGI One Pro
568.507 cd/m2
Oukitel U11 Plus
566.427 cd/m2
Xiaomi Mi 5c
562.563 cd/m2
Smartisan Nut Pro 2
555.759 cd/m2
UMIDIGI Z2 Special Edition
553.872 cd/m2
Oukitel K6000 Pro
552.705 cd/m2
Xiaomi Mi A1
551.541 cd/m2
Xiaomi Redmi 5 Plus
551.36 cd/m2
The CIE diagram unveils almost colour space coverage that gravitates around 100% sRGB but is not quite there. It hints at duller greens and red-purples and punchier yellow-orange colours. The display panel has a traditional vertical striped RGB subpixel arrangement.

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