Nokia X6 / Nokia 6.1 Plus Review

1 August 2018, 12:25:42

Nokia X6 / Nokia 6.1 Plus Review
You can buy a Nokia X6 at a promotional price from FastTech.

Display

Nokia X6 is built around a 5.8-inch IPS display that covers 80.62% of the total front surface of the device. It has an FHD+ resolution (1080 x 2280), 432 ppi pixel density and a 19:9 aspect ratio. By default, the display has a notch but from the Display settings you can change it to a standard view. Of course, this decreases your screen real estate. The display is covered with a 2.5D curved Corning Gorilla Glass 3. Ever since March this year, we have noticed on our review units with IPS displays that when we switch from one colour to a fully black screen, the handset needs about 10 seconds to show the black it is capable of showing. During these 10 seconds, the screen gets darker and darker. Hence, since then we've been making two measurements of the displays in order to give a more realistic picture of the static contrast, white and black luminance values. The Single Frame measurements show the white and black luminance values from a screen that shows 50% white and 50% black. The Separate Frames measurements show the white and black luminance values received from a fully white and fully black screen.

A single frame, 50% white / 50% black

Brightness White luminance Black luminance Contrast Color temperature
100 % 424.966 cd/m2 0.303 cd/m2 1403 : 1 10134 K
75 % 256.208 cd/m2 0.183 cd/m2 1400 : 1 10009 K
50 % 126.751 cd/m2 0.089 cd/m2 1424 : 1 9878 K
25 % 37.771 cd/m2 0.027 cd/m2 1399 : 1 9737 K
0 % 1.830 cd/m2 0.000 cd/m2 - 9573 K
When the white and black luminance values are measured on a single frame that shows 50% white and 50% black, we get a maximum brightness of 425 cd/m2 and a contrast ratio of 1400:1. The temperature of the white point is high - from 9500 K to 10000 K. It is interesting to see that 0% brightness the black luminance values cannot be measured and the white luminance values are extremely low.

Two separate black and white frames

Brightness White luminance Black luminance Contrast Color temperature
100 % 434.918 cd/m2 0.319 cd/m2 1363 : 1 10129 K
75 % 261.787 cd/m2 0.193 cd/m2 1356 : 1 9968 K
50 % 129.118 cd/m2 0.095 cd/m2 1359 : 1 9828 K
25 % 38.640 cd/m2 0.029 cd/m2 1332 : 1 9694 K
0 % 1.848 cd/m2 0.000 cd/m2 - 9579 K
When we measured the white and black luminance values on a fully white and a fully black display, we got slightly higher white luminance values at all brightness levels. The maximum brightness in this occasion measures 435 cd/m2. However, unlike all other cases, we got higher black luminance values, too. Moreover, the static contrast ratio is around 1300:1, which is lower than the one measured on the single frame. Usually, it is vice versa - the contrast measures on two separate black and white frames is higher than the one measured on a single frame showing 50% white and 50% black. The temperature of the white point remains almost unchanged - the absolute values at all brightness values are very close - a very rare occurrence, too.
Peak brightness (100% APL)
Ulefone Armor 6
447.346 cd/m2
Leagoo Shark 1
445.4 cd/m2
Vernee Apollo Lite
445.205 cd/m2
Cubot Dinosaur
443.735 cd/m2
Leagoo KIICAA MIX
443.241 cd/m2
UMIDIGI Z2
441.126 cd/m2
Maze Alpha X 64GB
440.728 cd/m2
OnePlus 6
439.326 cd/m2
LeEco Le 2
438.803 cd/m2
Coolpad Cool1
436.112 cd/m2
Nokia X6
434.918 cd/m2
Xiaomi Mi 8
434.324 cd/m2
Elephone S7 Special Edition
433.436 cd/m2
Ulefone Armor 2
433.216 cd/m2
OnePlus 5T
433.149 cd/m2
OnePlus 3
432.536 cd/m2
OnePlus 5
431.892 cd/m2
OnePlus 6T
431.037 cd/m2
Xiaomi Mi Mix 3
430.777 cd/m2
Doogee Mix 2
426.842 cd/m2
Meizu m3 note
426.377 cd/m2
The CIE diagram clearly shows a colour space coverage that's significantly wider than 100% of the SRGB one. It looks close to 90% of the NTSC colour space coverage. The display panel has a traditional vertical striped RGB subpixel arrangement.

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