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Cubot KingKong AX smartphone review – The outdoor phone with a second display and a 100-MP camera

Slim mud runner. Are you looking for an outdoor phone that can easily be stashed away in your pockets despite its good protection class? Then the Cubot KingKong AX could very well meet this requirement, as it is relatively slim and features a second display on the back as its highlight. Did the stable phone manage to impress us during our test?
Cubot KingKong AX (King Kong Series)
Processor
Mediatek Helio G99 8 x 2 - 2.2 GHz, Cortex-A76 / A55
Graphics adapter
Memory
12 GB 
Display
6.58 inch 20:9, 2408 x 1080 pixel 401 PPI, capacitive touchscreen, IPS, glossy: yes, 120 Hz
Storage
256 GB UFS 3.0 Flash, 256 GB 
, 220 GB free
Connections
1 USB 2.0, Audio Connections: audio via USB-C, Card Reader: microSD (shared, up to 1TB) , NFC, Brightness Sensor, Sensors: acceleration sensor, gyroscope, proximity sensor
Networking
802.11 a/b/g/n/ac (a/b/g/n = Wi-Fi 4/ac = Wi-Fi 5/), Bluetooth 5.2, 2G (850/​900/​1800/​1900), 3G (B1/​B2/​B4/​B5/​B6/​B8/​B19), 4G (B1/​B2/​B3/​B4/​B5/​B7/​B8/​B12/​B13/​B17/​B18/​B19/​B20/​B25/​B26/​B28/​B38/​B39/​B40/​B41/​B66) , Dual SIM, LTE, GPS
Size
height x width x depth (in mm): 12.7 x 172 x 80.9 ( = 0.5 x 6.77 x 3.19 in)
Battery
5100 mAh Lithium-Ion, 33 Watt charging
Charging
fast charging / Quickcharge
Operating System
Android 14
Camera
Primary Camera: 100 MPix phase comparison-AF, LED-flash, Videos @1080p/​30fps (Camera 1); 5.0MP, macro lens (Camera 2); 0.3MP (Camera 3)
Secondary Camera: 32 MPix
Additional features
Speakers: mono speaker, charger, USB cable, SIM tool, 12 Months Warranty, IP68/​IP69K certified, fanless, ruggedized, waterproof
Weight
296 g ( = 10.44 oz / 0.65 pounds) ( = 0 oz / 0 pounds)
Price
260 Euro
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

Possible competitors compared

Rating
Date
Model
Weight
Storage
Size
Resolution
Price from
79.1 %
04/2024
Cubot KingKong AX
Helio G99, Mali-G57 MP2
296 g256 GB UFS 3.0 Flash6.58"2408x1080
79.1 %
03/2024
Samsung Galaxy XCover 7
Dimensity 6100+, Mali-G57 MP2
240 g128 GB UFS 2.1 Flash6.60"2408x1080
80.1 %
02/2024
Oukitel WP33 Pro 5G
Dimensity 6100+, Mali-G57 MP2
577.5 g256 GB UFS 2.2 Flash6.60"2408x1080
82.3 %
06/2023
Nokia XR21
SD 695 5G, Adreno 619
231 g128 GB UFS 2.2 Flash6.49"2400x1080

Case and connectivity – Not too heavy

Rugged phones, which you can also use in uncomfortable locations, are often heavy and feature a bulky case. Furthermore, their brute designs are often pretty eye-catching and less discreet during, say, a business meeting.

The Cubot KingKong AX aims to find a compromise which consists of a unique design, relatively low weight, robustness and a slim case. When you remove the phone from its packaging, it won't feel the lightest in your hand at 296 grams, however, you can definitely hold it for longer periods of time without it becoming tiring. Its case is a little thicker than conventional smartphones, measuring in at 12.7 millimetres. In return, it offers complete protection against dust and water—although you shouldn't submerge it in saltwater, as this attacks the phone's seals. In freshwater, you can go as deep as 1.5 meters for half an hour.

The Cubot KingKong AX can't be dented or twisted whatsoever—a slightly protruding frame provides the display glass with additional protection. The back features an unusual mixture of rubberized case parts and a large glass surface. The cameras are grouped around a second, round display. All-in-all, its design is relatively typical for an outdoor device with its visible screws and lots of ridges and hatching, however, it is also still discreet enough that it doesn't stand out all too much in professional surroundings.

The outdoor phone is fitted with 256 GB of storage and 12 GB RAM, meaning it is quite well-equipped for its price class. It doesn't feature a dedicated audio jack, so headphones or speakers have to be connected via its USB-C port. The phone supports NFC, so you can also make use of mobile payment services.

Two SIM slots are situated within this device—but it doesn't support eSIMs. You can also insert a microSD card, but at the expense of one of its two SIM card slots, meaning you can't simultaneously use two nano SIM cards and one microSD card. In our test using the Angelbird V60 as a reference card, the card reader delivered average speed results.

Size comparison

175.4 mm / 6.91 in 84 mm / 3.31 in 27.2 mm / 1.071 in 577.5 g1.273 lbs172 mm / 6.77 in 80.9 mm / 3.19 in 12.7 mm / 0.5 in 296 g0.653 lbs169 mm / 6.65 in 80.1 mm / 3.15 in 10.2 mm / 0.4016 in 240 g0.529 lbs168 mm / 6.61 in 78.58 mm / 3.09 in 10.45 mm / 0.4114 in 231 g0.509 lbs210 mm / 8.27 in 148 mm / 5.83 in 1 mm / 0.03937 in 2.9 g0.00639 lbs
SD Card Reader - average JPG Copy Test (av. of 3 runs)
Cubot KingKong AX
  (Angelbird V60)
34.2 MB/s
Samsung Galaxy XCover 7
  (Angelbird V60)
33.5 MB/s -2%
Average of class Smartphone
  (7.7 - 77, n=89, last 2 years)
28.7 MB/s -16%

Cross Platform Disk Test (CPDT)

05101520253035404550556065707580Tooltip
Cubot KingKong AX Mali-G57 MP2, Helio G99, 256 GB UFS 3.0 Flash; SDCard Sequential Write 0.5 GB; Angelbird V60: Ø39.3 (29.2-49.9)
Samsung Galaxy XCover 7 Mali-G57 MP2, Dimensity 6100+, 128 GB UFS 2.1 Flash; SDCard Sequential Write 0.5 GB; Angelbird V60: Ø39.8 (30.7-47.5)
Cubot KingKong AX Mali-G57 MP2, Helio G99, 256 GB UFS 3.0 Flash; SDCard Sequential Read 0.5 GB; Angelbird V60: Ø69.7 (41-78.3)
Samsung Galaxy XCover 7 Mali-G57 MP2, Dimensity 6100+, 128 GB UFS 2.1 Flash; SDCard Sequential Read 0.5 GB; Angelbird V60: Ø70.4 (34.2-81.8)

Communication, software and operation – No 5G phone

The outdoor phone supports WiFi 5 as its fastest WLAN standard and it achieved the usual data rates between 300 and 350 MBit/s during our test. This means most home internet connections can be made use of well—unless you have a gigabit line.

The KingKong AX is an LTE smartphone and the currently fastest mobile network standard—namely 5G—is not supported. However, it supports quite a few 4G frequencies, so you can easily take the phone with you abroad and connect to the web in a wide range of countries. 

The manufacturer has installed Android 14 and the operating system remains largely unchanged. In addition, the phone doesn't come with many apps preinstalled, meaning users of the system can set it up to their own liking. 

At the time of testing, the latest security patch was from January 2024, so quite outdated. The manufacturer also hasn't stated how often and for how long the phone is set to receive updates. 

Its touchscreen can be operated well and thanks to its 120-Hz display, the system feels very reactive when responding to inputs. There is a button on the left side of the case which can be assigned three custom functions (single press, double press, long press), such as system functions or launching a specific app.

There is a fingerprint sensor on the right side of the case which not only unlocks the phone quickly and reliably, but can also expand the phone's operation via gestures: For example, you can accept calls, take photos or return to the home screen.

Networking
Cubot KingKong AX
802.11 a/b/g/n/ac
iperf3 transmit AXE11000
324 (min: 292) MBit/s ∼90%
iperf3 receive AXE11000
358 (min: 320) MBit/s ∼100%
Samsung Galaxy XCover 7
802.11 a/b/g/n/ac
iperf3 transmit AXE11000
335 (min: 319) MBit/s ∼93%
iperf3 receive AXE11000
325 (min: 301) MBit/s ∼91%
Oukitel WP33 Pro 5G
802.11 a/b/g/n/ac
iperf3 transmit AXE11000
339 (min: 323) MBit/s ∼94%
iperf3 receive AXE11000
345 (min: 302) MBit/s ∼96%
Nokia XR21
802.11 a/b/g/n/ac/ax
iperf3 transmit AXE11000
360 (min: 326) MBit/s ∼100%
iperf3 receive AXE11000
346 (min: 320) MBit/s ∼97%
020406080100120140160180200220240260280300320340360Tooltip
Cubot KingKong AX; iperf3 receive AXE11000; iperf 3.1.3: Ø358 (320-375)
Cubot KingKong AX; iperf3 transmit AXE11000; iperf 3.1.3: Ø324 (292-334)

Cameras – High-resolution sensors

Photo taken on front-facing camera
Photo taken on front-facing camera

Of course, on paper, a 100-megapixel sensor looks impressive. However, the lack of an ultra-wide-angle lens and the fact it features a support lens that cannot be used for separate photos casts doubt on the overall quality of this camera system.

The main camera's sensor is made by Omnivision and by standard, it takes 25-megapixel photos, but it can also make use of its full resolution when using a special mode. The photos look sharp and well lightened, however, some areas are slightly overexposed. Object edges often appear a little rough and details sometimes look a little unclean. But all-in-all, its picture quality is good.

Videos can be recorded at up to 1,080p and 30 fps; the moving images are well lit and both the phone's brightness adjustment and autofocus work quite fast.

You can also take extreme closeup shots via a 5-megapixel sensor. While these photos often look promising in the viewfinder and depict smaller structures well, the results are frequently overexposed. It seems that the phone's post-processing doesn't work the best.

The front of the device features a 32-megapixel camera but it, too, usually only takes photos with an 8-MP resolution. Selfies look quite natural and can easily be enlarged without losing all too many details. 

Image Comparison

Choose a scene and navigate within the first image. One click changes the position on touchscreens. One click on the zoomed-in image opens the original in a new window. The first image shows the scaled photograph of the test device.

Main camera plantMain camera surroundingsMain camera low light
click to load images
ColorChecker
1.8 ∆E
4.9 ∆E
4.4 ∆E
3.9 ∆E
5.9 ∆E
6.6 ∆E
7.9 ∆E
5.1 ∆E
5.3 ∆E
2.7 ∆E
5.2 ∆E
4.5 ∆E
3.8 ∆E
6.2 ∆E
5.5 ∆E
2.1 ∆E
4.6 ∆E
8.4 ∆E
4.7 ∆E
5.1 ∆E
6.3 ∆E
3.6 ∆E
3.4 ∆E
5.1 ∆E
ColorChecker Cubot KingKong AX: 4.87 ∆E min: 1.85 - max: 8.4 ∆E
ColorChecker
30.2 ∆E
52.9 ∆E
38.5 ∆E
32.9 ∆E
43.2 ∆E
58.2 ∆E
51.3 ∆E
32.5 ∆E
41.2 ∆E
28.5 ∆E
59.3 ∆E
61.9 ∆E
27.9 ∆E
43 ∆E
35.6 ∆E
70.5 ∆E
41.8 ∆E
40 ∆E
75.1 ∆E
67.4 ∆E
49.9 ∆E
36 ∆E
23.9 ∆E
13.9 ∆E
ColorChecker Cubot KingKong AX: 43.99 ∆E min: 13.91 - max: 75.13 ∆E

Display – With a second display on the back

Sub-pixel array
Sub-pixel array

The KingKong AX's display has a resolution of 2,408 x 1,080 pixels and it can depict up to 120 frames per second. At 553 cd/m² on average, its maximum brightness is typical for this class of outdoor smartphones. Its brightness will likely not be enough to compete with direct sunlight, but content should still remain mostly legible outside on bright days. 

Using a spectrophotometer and the CalMAN software, we also tested its color depiction: It showed a clear blue tint and quite hefty color deviations, which means the phone seems to be less suitable for professional use if you rely on precise color assessments. 

The IPS panel makes do without any visible PWM flickering, so most users should be able to use the display without having to deal with headaches or any other complaints.

The round touchscreen on the back displays a clock face as standard, but can also be used as a camera viewfinder, music player or for reading notifications.

487
cd/m²
489
cd/m²
506
cd/m²
526
cd/m²
553
cd/m²
559
cd/m²
567
cd/m²
498
cd/m²
503
cd/m²
Distribution of brightness
tested with X-Rite i1Pro 2
Maximum: 567 cd/m² (Nits) Average: 520.9 cd/m² Minimum: 3.96 cd/m²
Brightness Distribution: 86 %
Center on Battery: 553 cd/m²
Contrast: 1106:1 (Black: 0.5 cd/m²)
ΔE Color 7.18 | 0.5-29.43 Ø4.99
ΔE Greyscale 7.1 | 0.57-98 Ø5.2
99.9% sRGB (Calman 2D)
Gamma: 2.291
Cubot KingKong AX
IPS, 2408x1080, 6.58
Samsung Galaxy XCover 7
PLS, 2408x1080, 6.60
Oukitel WP33 Pro 5G
IPS, 2408x1080, 6.60
Nokia XR21
TFT-LCD, 2400x1080, 6.49
Response Times
-19%
18%
5%
Response Time Grey 50% / Grey 80% *
46.8 ?(23.8, 23)
43.9 ?(27.5, 16.4)
6%
32.5 ?(17.5, 15)
31%
42.05 ?(18.9, 23.15)
10%
Response Time Black / White *
22.5 ?(14.6, 7.9)
32.3 ?(14.1, 18.2)
-44%
21.6 ?(10.8, 10.8)
4%
22.54 ?(8.912, 13.63)
-0%
PWM Frequency
55100
Screen
9%
-28%
22%
Brightness middle
553
600
8%
539
-3%
503
-9%
Brightness
521
561
8%
517
-1%
487
-7%
Brightness Distribution
86
89
3%
90
5%
94
9%
Black Level *
0.5
0.57
-14%
0.5
-0%
0.45
10%
Contrast
1106
1053
-5%
1078
-3%
1118
1%
Colorchecker dE 2000 *
7.18
5.07
29%
11.88
-65%
2.4
67%
Colorchecker dE 2000 max. *
10.23
8.1
21%
17.9
-75%
6.6
35%
Greyscale dE 2000 *
7.1
5.7
20%
12.9
-82%
1.9
73%
Gamma
2.291 96%
2.249 98%
1.597 138%
2.22 99%
CCT
8964 73%
8162 80%
9933 65%
6602 98%
Total Average (Program / Settings)
-5% / 3%
-5% / -19%
14% / 19%

* ... smaller is better

Display Response Times

Display response times show how fast the screen is able to change from one color to the next. Slow response times can lead to afterimages and can cause moving objects to appear blurry (ghosting). Gamers of fast-paced 3D titles should pay special attention to fast response times.
       Response Time Black to White
22.5 ms ... rise ↗ and fall ↘ combined↗ 14.6 ms rise
↘ 7.9 ms fall
The screen shows good response rates in our tests, but may be too slow for competitive gamers.
In comparison, all tested devices range from 0.1 (minimum) to 240 (maximum) ms. » 45 % of all devices are better.
This means that the measured response time is similar to the average of all tested devices (21.4 ms).
       Response Time 50% Grey to 80% Grey
46.8 ms ... rise ↗ and fall ↘ combined↗ 23.8 ms rise
↘ 23 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers.
In comparison, all tested devices range from 0.2 (minimum) to 636 (maximum) ms. » 78 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (33.5 ms).

Screen Flickering / PWM (Pulse-Width Modulation)

To dim the screen, some notebooks will simply cycle the backlight on and off in rapid succession - a method called Pulse Width Modulation (PWM) . This cycling frequency should ideally be undetectable to the human eye. If said frequency is too low, users with sensitive eyes may experience strain or headaches or even notice the flickering altogether.
Screen flickering / PWM not detected

In comparison: 53 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 17682 (minimum: 5 - maximum: 3846000) Hz was measured.

CalMAN grayscale
CalMAN grayscale
CalMAN color accuracy
CalMAN color accuracy
CalMAN sRGB color space
CalMAN sRGB color space
CalMAN saturation
CalMAN saturation

Performance, emissions and runtimes – Fast and enduring

When it comes to outdoor smartphones, you usually have to make do with less performance than on similarly-priced conventional smartphones, as their budget is limited by their protective measures. Even so, the sturdy Cubot KingKong AX offers good mid-range performance in everyday use thanks to its Mediatek Helio G99 SoC. Even more expensive outdoor phones rarely offer significantly better performance.

If you need high-end power, then you'll have to look elsewhere, but this phone's power is still good enough for opening multiple apps at once or completing slightly more demanding tasks. In addition, the smartphone handles graphics calculations well enough, as long as you don't try to play the latest games in the highest resolution.

Its storage is a clear highlight, as its speedy UFS-3.0 storage and fast controller allow for quick file transfers and short loading times.

We noted that the case heated up to a maximum of 41.3 °C, which is noticeable but not problematic. During the stress tests using 3DMark, the phone also showed that it was able to keep its performance steady even during longer periods of load.

There is a small mono speaker on the back of the phone. It reaches a reasonable volume and sounds quite decent. However, due to the lack of bass and low mids, you can't expect a really rich sound. External speakers or headphones are needed for this, which can be connected via the phone's USB-C port using an adapter if necessary. Bluetooth is also available for wireless audio transmission, and the phone supports all major audio codecs as well as some more unusual variants such as Opus and LDHC.

At 5,100 mAh, its battery is the usual size and thanks to 33-watt fast charging, it can be fully charged in a maximum of 2 hours. In our test, we needed 17:38 hours to empty it by surfing via WLAN, which puts it ahead of many other devices. This means you can also go on longer hikes away from civilization.

Geekbench 6.2
Single-Core
Average of class Smartphone
  (193 - 2930, n=120, last 2 years)
1363 Points +87%
Nokia XR21
Qualcomm Snapdragon 695 5G, Adreno 619, 6144
903 Points +24%
Cubot KingKong AX
Mediatek Helio G99, Mali-G57 MP2, 12288
729 Points
Average Mediatek Helio G99
  (710 - 738, n=10)
727 Points 0%
Oukitel WP33 Pro 5G
MediaTek Dimensity 6100+, Mali-G57 MP2, 8192
699 Points -4%
Samsung Galaxy XCover 7
MediaTek Dimensity 6100+, Mali-G57 MP2, 6144
692 Points -5%
Multi-Core
Average of class Smartphone
  (845 - 7408, n=120, last 2 years)
3789 Points +89%
Nokia XR21
Qualcomm Snapdragon 695 5G, Adreno 619, 6144
2064 Points +3%
Cubot KingKong AX
Mediatek Helio G99, Mali-G57 MP2, 12288
2006 Points
Average Mediatek Helio G99
  (1864 - 2065, n=10)
1984 Points -1%
Oukitel WP33 Pro 5G
MediaTek Dimensity 6100+, Mali-G57 MP2, 8192
1944 Points -3%
Samsung Galaxy XCover 7
MediaTek Dimensity 6100+, Mali-G57 MP2, 6144
1911 Points -5%
Geekbench 5.5
Single-Core
Average of class Smartphone
  (119 - 2138, n=201, last 2 years)
921 Points +68%
Nokia XR21
Qualcomm Snapdragon 695 5G, Adreno 619, 6144
673 Points +23%
Cubot KingKong AX
Mediatek Helio G99, Mali-G57 MP2, 12288
548 Points
Average Mediatek Helio G99
  (490 - 576, n=16)
546 Points 0%
Samsung Galaxy XCover 7
MediaTek Dimensity 6100+, Mali-G57 MP2, 6144
531 Points -3%
Oukitel WP33 Pro 5G
MediaTek Dimensity 6100+, Mali-G57 MP2, 8192
521 Points -5%
Multi-Core
Average of class Smartphone
  (473 - 6681, n=201, last 2 years)
3055 Points +68%
Nokia XR21
Qualcomm Snapdragon 695 5G, Adreno 619, 6144
1923 Points +6%
Average Mediatek Helio G99
  (1670 - 1981, n=16)
1830 Points +1%
Cubot KingKong AX
Mediatek Helio G99, Mali-G57 MP2, 12288
1816 Points
Samsung Galaxy XCover 7
MediaTek Dimensity 6100+, Mali-G57 MP2, 6144
1713 Points -6%
Oukitel WP33 Pro 5G
MediaTek Dimensity 6100+, Mali-G57 MP2, 8192
1589 Points -12%
PCMark for Android - Work 3.0
Average of class Smartphone
  (4609 - 21385, n=200, last 2 years)
11973 Points +14%
Cubot KingKong AX
Mediatek Helio G99, Mali-G57 MP2, 12288
10464 Points
Average Mediatek Helio G99
  (8885 - 11027, n=16)
9801 Points -6%
Nokia XR21
Qualcomm Snapdragon 695 5G, Adreno 619, 6144
9180 Points -12%
Oukitel WP33 Pro 5G
MediaTek Dimensity 6100+, Mali-G57 MP2, 8192
8996 Points -14%
Samsung Galaxy XCover 7
MediaTek Dimensity 6100+, Mali-G57 MP2, 6144
8482 Points -19%
3DMark
2560x1440 Sling Shot Extreme (ES 3.1) Unlimited
Average of class Smartphone
  (317 - 20131, n=173, last 2 years)
7075 Points +169%
Nokia XR21
Qualcomm Snapdragon 695 5G, Adreno 619, 6144
3080 Points +17%
Average Mediatek Helio G99
  (2543 - 2843, n=15)
2642 Points 0%
Cubot KingKong AX
Mediatek Helio G99, Mali-G57 MP2, 12288
2632 Points
Samsung Galaxy XCover 7
MediaTek Dimensity 6100+, Mali-G57 MP2, 6144
2503 Points -5%
Oukitel WP33 Pro 5G
MediaTek Dimensity 6100+, Mali-G57 MP2, 8192
2468 Points -6%
2560x1440 Sling Shot Extreme (ES 3.1) Unlimited Graphics
Average of class Smartphone
  (267 - 33376, n=172, last 2 years)
10254 Points +320%
Nokia XR21
Qualcomm Snapdragon 695 5G, Adreno 619, 6144
2984 Points +22%
Average Mediatek Helio G99
  (2375 - 3908, n=15)
2559 Points +5%
Cubot KingKong AX
Mediatek Helio G99, Mali-G57 MP2, 12288
2443 Points
Samsung Galaxy XCover 7
MediaTek Dimensity 6100+, Mali-G57 MP2, 6144
2344 Points -4%
Oukitel WP33 Pro 5G
MediaTek Dimensity 6100+, Mali-G57 MP2, 8192
2281 Points -7%
2560x1440 Sling Shot Extreme (ES 3.1) Unlimited Physics
Average of class Smartphone
  (877 - 8480, n=172, last 2 years)
4362 Points +21%
Cubot KingKong AX
Mediatek Helio G99, Mali-G57 MP2, 12288
3606 Points
Average Mediatek Helio G99
  (3102 - 3798, n=15)
3570 Points -1%
Nokia XR21
Qualcomm Snapdragon 695 5G, Adreno 619, 6144
3468 Points -4%
Oukitel WP33 Pro 5G
MediaTek Dimensity 6100+, Mali-G57 MP2, 8192
3459 Points -4%
Samsung Galaxy XCover 7
MediaTek Dimensity 6100+, Mali-G57 MP2, 6144
3283 Points -9%
Wild Life Score
Average of class Smartphone
  (395 - 13896, n=123, last 2 years)
2664 Points +118%
Average Mediatek Helio G99
  (1165 - 1364, n=16)
1239 Points +1%
Samsung Galaxy XCover 7
MediaTek Dimensity 6100+, Mali-G57 MP2, 6144
1230 Points +1%
Cubot KingKong AX
Mediatek Helio G99, Mali-G57 MP2, 12288
1223 Points
Nokia XR21
Qualcomm Snapdragon 695 5G, Adreno 619, 6144
1212 Points -1%
Oukitel WP33 Pro 5G
MediaTek Dimensity 6100+, Mali-G57 MP2, 8192
1186 Points -3%
Wild Life Unlimited Score
Average of class Smartphone
  (394 - 20068, n=190, last 2 years)
6656 Points +443%
Cubot KingKong AX
Mediatek Helio G99, Mali-G57 MP2, 12288
1225 Points
Nokia XR21
Qualcomm Snapdragon 695 5G, Adreno 619, 6144
1208 Points -1%
Samsung Galaxy XCover 7
MediaTek Dimensity 6100+, Mali-G57 MP2, 6144
1208 Points -1%
Average Mediatek Helio G99
  (1011 - 1340, n=16)
1193 Points -3%
Oukitel WP33 Pro 5G
MediaTek Dimensity 6100+, Mali-G57 MP2, 8192
1174 Points -4%
Wild Life Extreme
Average of class Smartphone
  (110 - 5226, n=193, last 2 years)
1784 Points +420%
Nokia XR21
Qualcomm Snapdragon 695 5G, Adreno 619, 6144
362 Points +6%
Average Mediatek Helio G99
  (330 - 378, n=16)
346 Points +1%
Cubot KingKong AX
Mediatek Helio G99, Mali-G57 MP2, 12288
343 Points
Samsung Galaxy XCover 7
MediaTek Dimensity 6100+, Mali-G57 MP2, 6144
338 Points -1%
Oukitel WP33 Pro 5G
MediaTek Dimensity 6100+, Mali-G57 MP2, 8192
331 Points -3%
Wild Life Extreme Unlimited
Average of class Smartphone
  (110 - 5248, n=189, last 2 years)
1790 Points +434%
Nokia XR21
Qualcomm Snapdragon 695 5G, Adreno 619, 6144
354 Points +6%
Average Mediatek Helio G99
  (323 - 366, n=16)
337 Points +1%
Cubot KingKong AX
Mediatek Helio G99, Mali-G57 MP2, 12288
335 Points
Oukitel WP33 Pro 5G
MediaTek Dimensity 6100+, Mali-G57 MP2, 8192
330 Points -1%
Samsung Galaxy XCover 7
MediaTek Dimensity 6100+, Mali-G57 MP2, 6144
329 Points -2%
GFXBench
on screen Aztec Ruins Normal Tier Onscreen
Average of class Smartphone
  (3.6 - 123, n=213, last 2 years)
45.2 fps +223%
Nokia XR21
Qualcomm Snapdragon 695 5G, Adreno 619, 6144
19 fps +36%
Average Mediatek Helio G99
  (12 - 44, n=16)
17.4 fps +24%
Cubot KingKong AX
Mediatek Helio G99, Mali-G57 MP2, 12288
14 fps
Oukitel WP33 Pro 5G
MediaTek Dimensity 6100+, Mali-G57 MP2, 8192
13 fps -7%
Samsung Galaxy XCover 7
MediaTek Dimensity 6100+, Mali-G57 MP2, 6144
13 fps -7%
1920x1080 Aztec Ruins Normal Tier Offscreen
Average of class Smartphone
  (2.3 - 229, n=213, last 2 years)
66.9 fps +318%
Nokia XR21
Qualcomm Snapdragon 695 5G, Adreno 619, 6144
22 fps +38%
Cubot KingKong AX
Mediatek Helio G99, Mali-G57 MP2, 12288
16 fps
Average Mediatek Helio G99
  (14 - 18, n=16)
15.7 fps -2%
Oukitel WP33 Pro 5G
MediaTek Dimensity 6100+, Mali-G57 MP2, 8192
15 fps -6%
Samsung Galaxy XCover 7
MediaTek Dimensity 6100+, Mali-G57 MP2, 6144
15 fps -6%
on screen Aztec Ruins High Tier Onscreen
Average of class Smartphone
  (0.85 - 119, n=213, last 2 years)
33.6 fps +278%
Nokia XR21
Qualcomm Snapdragon 695 5G, Adreno 619, 6144
12 fps +35%
Average Mediatek Helio G99
  (8.3 - 28, n=16)
11.5 fps +29%
Cubot KingKong AX
Mediatek Helio G99, Mali-G57 MP2, 12288
8.9 fps
Oukitel WP33 Pro 5G
MediaTek Dimensity 6100+, Mali-G57 MP2, 8192
8.5 fps -4%
Samsung Galaxy XCover 7
MediaTek Dimensity 6100+, Mali-G57 MP2, 6144
8.5 fps -4%
2560x1440 Aztec Ruins High Tier Offscreen
Average of class Smartphone
  (0.85 - 94, n=213, last 2 years)
26.9 fps +356%
Nokia XR21
Qualcomm Snapdragon 695 5G, Adreno 619, 6144
8.2 fps +39%
Cubot KingKong AX
Mediatek Helio G99, Mali-G57 MP2, 12288
5.9 fps
Average Mediatek Helio G99
  (5.4 - 6.5, n=16)
5.88 fps 0%
Oukitel WP33 Pro 5G
MediaTek Dimensity 6100+, Mali-G57 MP2, 8192
5.7 fps -3%
Samsung Galaxy XCover 7
MediaTek Dimensity 6100+, Mali-G57 MP2, 6144
5.7 fps -3%
3840x2160 4K Aztec Ruins High Tier Offscreen
Average of class Smartphone
  (0.38 - 42, n=210, last 2 years)
12.8 fps +412%
Nokia XR21
Qualcomm Snapdragon 695 5G, Adreno 619, 6144
3.6 fps +44%
Cubot KingKong AX
Mediatek Helio G99, Mali-G57 MP2, 12288
2.5 fps
Average Mediatek Helio G99
  (2.2 - 2.8, n=16)
2.5 fps 0%
Samsung Galaxy XCover 7
MediaTek Dimensity 6100+, Mali-G57 MP2, 6144
2.4 fps -4%
Oukitel WP33 Pro 5G
MediaTek Dimensity 6100+, Mali-G57 MP2, 8192
2.3 fps -8%
Octane V2 - Total Score
Average of class Smartphone
  (2228 - 89112, n=207, last 2 years)
33914 Points +50%
Oukitel WP33 Pro 5G
MediaTek Dimensity 6100+, Mali-G57 MP2, 8192
22617 Points 0%
Cubot KingKong AX
Mediatek Helio G99, Mali-G57 MP2, 12288
22581 Points
Samsung Galaxy XCover 7
MediaTek Dimensity 6100+, Mali-G57 MP2, 6144
22114 Points -2%
Nokia XR21
Qualcomm Snapdragon 695 5G, Adreno 619, 6144
22080 Points -2%
Average Mediatek Helio G99
  (17228 - 25005, n=16)
20758 Points -8%
Cubot KingKong AXSamsung Galaxy XCover 7Oukitel WP33 Pro 5GNokia XR21Average 256 GB UFS 3.0 FlashAverage of class Smartphone
AndroBench 3-5
-25%
-16%
-36%
-3%
28%
Sequential Read 256KB
1000.7
488.2
-51%
482.1
-52%
509.76
-49%
Sequential Write 256KB
915.2
501
-45%
515.6
-44%
465.31
-49%
575 ?(387 - 915, n=22)
-37%
Random Read 4KB
230.6
212
-8%
253.9
10%
187.51
-19%
Random Write 4KB
233.2
240.2
3%
288
23%
167.51
-28%
188.5 ?(24.8 - 272, n=22)
-19%

Temperature

Max. Load
 41.3 °C
106 F
35 °C
95 F
34.8 °C
95 F
 
 40.4 °C
105 F
35.7 °C
96 F
34.7 °C
94 F
 
 39.5 °C
103 F
39.1 °C
102 F
34.4 °C
94 F
 
Maximum: 41.3 °C = 106 F
Average: 37.2 °C = 99 F
31.5 °C
89 F
37.2 °C
99 F
39.5 °C
103 F
32.8 °C
91 F
36.7 °C
98 F
38.9 °C
102 F
31.7 °C
89 F
36.5 °C
98 F
38.4 °C
101 F
Maximum: 39.5 °C = 103 F
Average: 35.9 °C = 97 F
Power Supply (max.)  42 °C = 108 F | Room Temperature 21 °C = 70 F | Fluke t3000FC (calibrated), Voltcraft IR-260
(±) The average temperature for the upper side under maximal load is 37.2 °C / 99 F, compared to the average of 32.7 °C / 91 F for the devices in the class Smartphone.
(±) The maximum temperature on the upper side is 41.3 °C / 106 F, compared to the average of 35 °C / 95 F, ranging from 21.9 to 56 °C for the class Smartphone.
(+) The bottom heats up to a maximum of 39.5 °C / 103 F, compared to the average of 33.8 °C / 93 F
(+) In idle usage, the average temperature for the upper side is 24.5 °C / 76 F, compared to the device average of 32.7 °C / 91 F.


Heat map front
Heat map front
Heat map back
Heat map back

3DMark Wild Life Stress Test

01234567Tooltip
Cubot KingKong AX Mali-G57 MP2, Helio G99, 256 GB UFS 3.0 Flash; Wild Life Extreme Stress Test; 1.1.4.1: Ø2.05 (2.04-2.06)
Samsung Galaxy XCover 7 Mali-G57 MP2, Dimensity 6100+, 128 GB UFS 2.1 Flash; Wild Life Extreme Stress Test; 1.1.4.1: Ø2.04 (2.03-2.04)
Oukitel WP33 Pro 5G Mali-G57 MP2, Dimensity 6100+, 256 GB UFS 2.2 Flash; Wild Life Extreme Stress Test; 1.1.4.1: Ø1.986 (1.98-1.997)
Nokia XR21 Adreno 619, SD 695 5G, 128 GB UFS 2.2 Flash; Wild Life Extreme Stress Test; 1.1.0.2: Ø2.15 (2.14-2.16)
Cubot KingKong AX Mali-G57 MP2, Helio G99, 256 GB UFS 3.0 Flash; Wild Life Stress Test Stability; 0.0.0.0: Ø7.31 (7.17-7.33)
Samsung Galaxy XCover 7 Mali-G57 MP2, Dimensity 6100+, 128 GB UFS 2.1 Flash; Wild Life Stress Test Stability; 0.0.0.0: Ø7.36 (7.34-7.37)
Oukitel WP33 Pro 5G Mali-G57 MP2, Dimensity 6100+, 256 GB UFS 2.2 Flash; Wild Life Stress Test Stability; 0.0.0.0: Ø7.12 (7.1-7.12)
Nokia XR21 Adreno 619, SD 695 5G, 128 GB UFS 2.2 Flash; Wild Life Stress Test Stability: Ø7.22 (7.22-7.26)

Speakers

dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2042.238.22533.234.13127.130.54030.532.9503434.26325.824.3801719.210019.92212525.421.616017.333.820010.641.625014.446.53158.1484007.450.55007.859.5630961.980012.564100017.271.512509.472.816001068.820009.866.1250010.365.231501166.540001273.2500012.677.4630013.577.4800014.466.61000015.258.21250015.9631600016.854.3SPL24.883.6N0.653.8median 12.5median 63Delta3.29.835.932.726.234.429.428.128.733.236.635.82234.919.734.117.937.118.536.917.747.115.146.815.550.916.554.5135913.467.514.272.21377.612.880.113.880.313.77713.677.113.278.31480.313.579.813.680.413.977.513.671.713.671.713.864.613.162.425.8900.781.8median 13.7median 72.20.811.8hearing rangehide median Pink NoiseCubot KingKong AXNokia XR21
Frequency diagram (checkboxes can be checked and unchecked to compare devices)
Cubot KingKong AX audio analysis

(+) | speakers can play relatively loud (83.6 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 27.4% lower than median
(±) | linearity of bass is average (9.7% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 5.7% higher than median
(±) | linearity of mids is average (7.8% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 7.6% higher than median
(±) | linearity of highs is average (9.2% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (23.9% difference to median)
Compared to same class
» 48% of all tested devices in this class were better, 9% similar, 43% worse
» The best had a delta of 12%, average was 38%, worst was 134%
Compared to all devices tested
» 67% of all tested devices were better, 7% similar, 26% worse
» The best had a delta of 4%, average was 25%, worst was 134%

Nokia XR21 audio analysis

(+) | speakers can play relatively loud (90 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 26.7% lower than median
(+) | bass is linear (6.1% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 6.1% higher than median
(+) | mids are linear (6.2% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 5.2% higher than median
(+) | highs are linear (3.2% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (19.8% difference to median)
Compared to same class
» 24% of all tested devices in this class were better, 8% similar, 68% worse
» The best had a delta of 12%, average was 38%, worst was 134%
Compared to all devices tested
» 45% of all tested devices were better, 7% similar, 48% worse
» The best had a delta of 4%, average was 25%, worst was 134%

Runtimes

Battery Runtime - WiFi Websurfing
Oukitel WP33 Pro 5G
22000 mAh
2844 min +169%
Cubot KingKong AX
5100 mAh
1058 min
Average of class Smartphone
  (476 - 2844, n=213, last 2 years)
929 min -12%
Nokia XR21
4800 mAh
875 min -17%
Samsung Galaxy XCover 7
4050 mAh
803 min -24%
Battery Runtime
WiFi Websurfing
17h 38min

Pros

+ good performance
+ fast storage
+ long runtimes
+ stable case
+ IP68-certified
+ decent main camera
+ stock Android

Cons

- outdated security patches
- no update promise
- no 5G
- missing eSIM support
- display featuring inaccurate color depiction

Verdict – Fast, stable and unusual

Cubot KingKong AX review. Test device provided by Cubot.
Cubot KingKong AX review. Test device provided by Cubot.

It's not too expensive, comes with interesting features such as a second display on the back and a high-res main camera and also fits into your trouser pockets thanks to its acceptable measurements: The Cubot KingKong AX may just hit a sweet spot for many customers who are on the lookout for a stable device for work or their free time.

Its fast storage, stable case with a somewhat discreet design, stock Android, speedy fingerprint sensor and good system performance are further advantages of this handy rugged phone. Furthermore, it doesn't take that long to charge and offers decent runtimes if you don't have access to an outlet.

On the other hand, you will have to live with the fact the manufacturer hasn't promised any specific updates for the phone and that it doesn't support 5G or eSIMs—plus, the display's color depiction isn't much of a success.

The Cubot KingKong AX proves to be handy and yet robust enough for use in harsh environments. With fast storage, long runtimes and a second display, it sure is an interesting outdoor phone.

If you like things even sleeker, then you may want to take a look at the Samsung Galaxy XCover7 which also supports 5G.

Price and availability

The Cubot KingKong AX can be purchased from Amazon for US$299.99.

Cubot KingKong AX - 04/22/2024 v7 (old)
Florian Schmitt

Chassis
85%
Keyboard
65 / 75 → 87%
Pointing Device
91%
Connectivity
48 / 70 → 69%
Weight
86%
Battery
92%
Display
83%
Games Performance
27 / 64 → 42%
Application Performance
61 / 86 → 71%
Temperature
91%
Noise
100%
Audio
70 / 90 → 77%
Camera
59%
Average
74%
79%
Smartphone - Weighted Average

Transparency

The present review sample was made available to the author as a loan by the manufacturer or a shop for the purposes of review. The lender had no influence on this review, nor did the manufacturer receive a copy of this review before publication. There was no obligation to publish this review.

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> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > Reviews > Cubot KingKong AX smartphone review – The outdoor phone with a second display and a 100-MP camera
Florian Schmitt, 2024-04-23 (Update: 2024-04-23)