UMIDIGI Z2 Special Edition Review

6 December 2018, 17:44:11

UMIDIGI Z2 Special Edition Review
You can buy an UMIDIGI Z2 Secial Edition from various stores such as the official UMIDIGI Store on AliExpress, the official UMIDIGI store on Amazon UK or Amazon DE.

Display

UMIDIGI Z2 Special Edition has the same display as the UMIDIGI Z2 and UMIDIGI Z2 Pro - a 6.2-inch IPS unit with a 19:9 aspect ratio, FHD+ resolution (1080 x 2246 pixels) and a notch. UMIDIGI says it uses the latest 3rd-generation screen technology for this model. The screen takes up 84.25% of the total front surface of the handset. 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. The first impressions are that the screen is very bright, so let's see what the measurements point out.

A single frame, 50% white / 50% black

Brightness White luminance Black luminance Contrast Color temperature
100 % 453.647 cd/m2 0.332 cd/m2 1366 : 1 9229 K
75 % 354.062 cd/m2 0.261 cd/m2 1357 : 1 9150 K
50 % 249.281 cd/m2 0.184 cd/m2 1355 : 1 9138 K
25 % 137.041 cd/m2 0.101 cd/m2 1357 : 1 9006 K
0 % 16.735 cd/m2 0.012 cd/m2 1395 : 1 8816 K
Our measurements of the Z2 Special Edition show that the display is brighter than the displays on the UMIDIGI Z2 and Z2 Pro. To be exact, the maximum white luminance of the Z2 SE is 453.647 cd/m2, while the one of the Z2 and Z2 Pro is 377.292 cd/m2 and 399.729 cd/m2 respectively. The white luminance of the Z2 SE is actually higher than the one of the other two models at all brightness levels. At the same time, the black luminance is also higher at all brightness levels. As a result, the static contrast of the Z2 SE gravitates around 1350:1, while the one of the other models is around 1450:1/1400:1. The temperature of the white point of the Z2 SE is somewhere in between the ones of the Z2 and Z2 Pro - around 9200 K against <9000 K for the Z2 and 9400 K for the Z2 Pro.

Two separate black and white frames

Brightness White luminance Black luminance Contrast Color temperature
100 % 553.872 cd/m2 0.166 cd/m2 2941 : 1 3337 K
75 % 436.441 cd/m2 0.129 cd/m2 3383 : 1 9369 K
50 % 310.546 cd/m2 0.089 cd/m2 3489 : 1 9263 K
25 % 172.794 cd/m2 0.048 cd/m2 3600 : 1 9094 K
0 % 21.353 cd/m2 0.007 cd/m2 3050 : 1 8910 K
When we measured the luminance on a fully white and a fully black display, we observed the same pattern in terms of white luminance - it is much higher on the Z2 S2 compared to the previous two models. The maximum brightness of the model reaches 553.872 cd/m2. The one of the Z2 is 441.126 cd/m2 and the one of the Z2 Pro is 488.228 cd/m2. The black luminance of the Z2 is almost identical to the one of the Z2 Pro at all brightness levels and slightly higher than the one of the Z2. The static contrast ratio of the SE and Pro models is also almost identical with a high range from 2941:1 to 3600:1. The static contrast ratio of the Z2 does not fluctuate that much and gravitates around 3200:1. It also has the lowest temperature of the white point - around 8800 K, while the Z2 SE has an average colour temperature of 9200 K and the Z2 Pro has the highest levels - around 9500 K.
Peak brightness (100% APL)
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
Samsung Galaxy S8 Exynos
551 cd/m2
Oukitel K10
549.838 cd/m2
Zopo Speed 8
549.03 cd/m2
Doogee Y7 Plus
545.174 cd/m2
Nokia X7
540.888 cd/m2
Blackview S8
540.239 cd/m2
Doogee S50
540.052 cd/m2
The CIE diagram unveils a colour space coverage that's significantly higher than 100% sRGB. The display panel has a traditional vertical striped RGB subpixel arrangement.

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