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Doogee S55 Smartphone Review

Mike Wobker, 👁 Florian Schmitt, Felicitas Krohn (translated by Mark Riege), 08/17/2018

Iron Soldier. With its bulky aluminum case, the Doogee S55 promises to be an ultimate outdoor smartphone. We clarify in our test, whether the Chinese smartphone with its 5500-mAh battery can offer more than just a long battery life and a sturdy design.

Doogee S55

With the Doogee BL9000 and the Doogee Mix, the Chinese manufacturer has already proven that it is able to pursue completely different concepts in terms of design and battery life. Represented by our current test unit among others, now outdoor devices form a third leg. Not only does the robust smartphone have a sturdy case, but it also brings a long battery life with its 5500-mAh battery.

Mediatek MT6750 SoC ensures the smooth system operation of the Doogee S55, supported by an ARM Mali-T860 MP2 GPU, 4 GB of RAM, and 64 GB of eMMC flash storage. With this equipment, the Chinese smartphone faces an outdoor competition that, although offering a similar performance, is represented in the market with significant price differences. For our test, we have selected the Oukitel WP5000, Ulefone's Armor X, the Cubot King Kong, and the more expensive Crosscall Action-X3 as comparison devices.

Doogee S55 (S Series)
Graphics adapter
Memory
4096 MB 
Display
5.5 inch 18:9, 1440 x 720 pixel 292 PPI, Capacitive, IPS, Corning Gorilla Glass 3, glossy: yes
Storage
64 GB eMMC Flash, 64 GB 
, 57 GB free
Connections
1 USB 2.0, Audio Connections: 3.5 mm audio port, Card Reader: microSD, 1 Fingerprint Reader, Brightness Sensor, Sensors: Proximity, acceleration, and hall sensors, eCompass, gyroscope
Networking
802.11 b/g/n (b/g/n), Bluetooth 4.1, 2G (GSM: 850/900/1800/1900MHz), 3G (WCDMA: 900/2100MHz), LTE FDD (B1/3/7/8/20), Dual SIM, LTE, GPS
Size
height x width x depth (in mm): 14.15 x 162 x 78 ( = 0.56 x 6.38 x 3.07 in)
Battery
5500 mAh Lithium-Polymer
Operating System
Android 8.0 Oreo
Camera
Primary Camera: 13 MPix 13+8 MP dual camera, f/2.0
Secondary Camera: 5 MPix f/2.2
Additional features
Speakers: 1 speaker, Keyboard: Onscreen, Keyboard Light: yes, USB charger, MicroUSB cable, SIM tool, display protector, cleaning cloth, DoogeeOS 2.0, IP68, fanless, ruggedized
Weight
265 g ( = 9.35 oz / 0.58 pounds), Power Supply: 60 g ( = 2.12 oz / 0.13 pounds)
Price
170 Euro
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

Case - Outdoor smartphone with IP68 certification

Doogee has manufactured the S55 from aluminum and sturdy plastic. All the corners are protected by reinforced bumpers and all the connections have covers. The case appears very robust and is dust and waterproof according to the IP68 standard. The display is covered by Corning Gorilla Glass 3 and can be additionally protected by an included display protector. A fingerprint sensor and the dual camera system are located in a slightly raised metal plate on the back.

The Doogee S55 is available in two color variants, but their only difference are orange or black color accents.

Doogee S55
Doogee S55
Doogee S55
Doogee S55
Doogee S55
Doogee S55

Size Comparison

Equipment - Mid-range technology in the Chinese smartphone

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Doogee has equipped the S55 with a Mediatek MTK6750T SoC, an ARM Mali-T860 MP2 GPU, 4 GB of RAM, and 64 GB of eMMC flash storage. Using the SIM card slot, users can either expand the internal storage with a microSD card or use the Dual-SIM functionality with a second NanoSIM card.

For wired data transfer, there is a Micro-USB connection which is connected internally with the USB-2.0 standard. In addition, you can connect external speakers or a headset with the S55 via the 3.5-mm audio port.

Right side: power button, volume rocker
Right side: power button, volume rocker
Left side: SIM/SD card slot
Left side: SIM/SD card slot

Software - The S55 with Android 8

Users are greeted by an almost pure Android-8.0 operating system on the Doogee S55. The DoogeeOS 2.0 user interface refers merely to adjusted icons and thus makes only cosmetic changes to the system. There are also no third-party apps, leaving the maximum possible storage space available to the user. After the first startup, about 57 GB still remain available on our test unit, and you can expand the storage via a microSD card. This can either be reformatted as internal storage or used as additional storage for your own data.

If several users need access to the smartphone, you can create several user accounts in the Settings menu.

Software Doogee S55
Software Doogee S55
Software Doogee S55
Software Doogee S55
Software Doogee S55
Software Doogee S55
Software Doogee S55
 

Communication and GPS - Smartphone with LTE band 20

The Doogee S55 is able to connect to mobile communications via GSM, 3G, and LTE networks. LTE of category 4 is available, allowing for download rates up to 150 MBit/s and upload rates up 50 MBit/s. Interested buyers who live in rural German areas can also make use of the LTE band 20, which is not a given with Chinese smartphones.

Over close range, the users of the S55 have Bluetooth 4.1 and WLAN with the 802.11 b, g, and n standards. In our test, the Doogee smartphone achieves good transfer rates on average, which place it in the middle of the field of our competitors.

Networking
iperf3 Client (receive) TCP 1 m 4M x10
Average of class Smartphone
  (5.9 - 939, n=311)
212 MBit/s ∼100% +102%
Crosscall Action-X3
Adreno 505, 430, 32 GB eMMC Flash
199 MBit/s ∼94% +90%
Oukitel WP5000
Mali-T880 MP2, Helio P25, 64 GB eMMC Flash
114 MBit/s ∼54% +9%
Doogee S55
Mali-T860 MP2, MT6750, 64 GB eMMC Flash
105 MBit/s ∼50%
Ulefone Armor X
PowerVR GE8100, MT6739, 16 GB eMMC Flash
98.3 MBit/s ∼46% -6%
Cubot King Kong
Mali-400 MP2, MT6580M, 16 GB eMMC Flash
54.4 MBit/s ∼26% -48%
iperf3 Client (transmit) TCP 1 m 4M x10
Average of class Smartphone
  (9.4 - 703, n=311)
206 MBit/s ∼100% +93%
Crosscall Action-X3
Adreno 505, 430, 32 GB eMMC Flash
201 MBit/s ∼98% +88%
Oukitel WP5000
Mali-T880 MP2, Helio P25, 64 GB eMMC Flash
109 MBit/s ∼53% +2%
Doogee S55
Mali-T860 MP2, MT6750, 64 GB eMMC Flash
107 MBit/s ∼52%
Ulefone Armor X
PowerVR GE8100, MT6739, 16 GB eMMC Flash
103 MBit/s ∼50% -4%
Cubot King Kong
Mali-400 MP2, MT6580M, 16 GB eMMC Flash
57.7 MBit/s ∼28% -46%
GPS Test outdoors
GPS Test outdoors
GPS Test indoors
GPS Test indoors

With the "GPS Test" app, we evaluate how accurately the Doogee S55 is able to determine our own location. The smartphone is able to create a satellite connection indoors and locate us with an accuracy of up to four meters (~13 ft). Outdoors, this value improves to an accuracy of up to two meters (~6.5 ft). To do this, the Doogee smartphone is able to use GPS as well as GLONASS.

On our customary bike tour, we compare the Doogee S55 with our Garmin Edge 520 reference device. The recorded route shows that our test unit makes use of the available tolerance to the maximum, placing our route often next to the road. This deviation becomes even more noticeable in curves, where large sections of the route are simply cut off. Even though the S55 is suited for simple navigation tasks, depending on their demands, outdoor enthusiasts should rather rely on external locating devices.

GPS Doogee S55
GPS Doogee S55
GPS Doogee S55
GPS Doogee S55
GPS Doogee S55
GPS Doogee S55
GPS Garmin Egde 520
GPS Garmin Egde 520
GPS Garmin Egde 520
GPS Garmin Egde 520
GPS Garmin Egde 520
GPS Garmin Egde 520

Telephone Functions and Voice Quality

Users of the Doogee S55 can use the standard Android app for phone calls, allowing to easily select contacts and input phone numbers via the number keyboard. The reception quality is average, but also drops occasionally.

While both sides are easy to understand during the phone conversation, the noise suppression could have been better. The volume is sufficient, but is unable to make itself heard against loud street noises, for example. The VoLTE or VoWLAN functions are not supported by the S55.

Cameras - Doogee smartphone for simple snapshots

Picture taken with front camera
Picture taken with front camera

Doogee has equipped the S55 with a 13+8 MP dual camera system on the back, as well as a 5 MP selfie camera in front. With the latter, you can capture portraits of a mediocre quality. The image appears very pale and often turns out too dark, since the sensor needs a moment to adjust the brightness. Users who like to adjust their recordings can do this using various settings, such as making the face thinner, enlarge the eyes, or change the color depth.

Panorama pictures taken with the main camera appear very bright, causing dark areas of the image to turn almost black, offering barely any details. In addition, the objects are only reproduced sharply in the center of the image and become noticeably blurry towards the edges. In closeups, the camera also has difficulties adjusting to surrounding light that is too bright. The result appears strongly overexposed, blurry in the details, and marked by a coarse graininess. In bad light conditions, the S55 is only able to reproduce the outlines of our selected object, with the details getting lost in blurriness and the edges of the image being in the dark. The settings only allow you to select from various modes for adjustment of the image quality.

The video function has similar limitations as photos, but can at least produce usable recordings in normal daylight. While the balance between bright and dark image areas is also less than optimal here, at least it is not as noticeable as in the photo mode.

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.

Scene 1Scene 2Scene 3
click to load images
ColorChecker Passport
ColorChecker Passport

The recording of the ColorChecker Passport shows that the camera of the Doogee S55 reproduces bright colors too bright and dark colors too dark. Turquoise and orange color tones are the most accurate. This result confirms the impression of our test pictures that bright image areas are too bright and dark areas are almost lost in black.

Under controlled light conditions, the S55 is able to reproduce our test chart well. However, only the center of the image is sharp here as well, although the blurriness towards the edges is not as pronounced as in our panorama picture. Yet it is still difficult to make out small details and fine structures. 

Test chart Doogee S55
Test chart Doogee S55 (detail)

Accessories and Warranty - A 12-month warranty on Doogee smartphone

Included with the Doogee S55 are a USB charger with the corresponding Micro-USB cable, a SIM tool, a cleaning cloth, and a display protector. Doogee does not offer any additional accessories specifically designed for the S55.

Doogee offers buyers of the S55 a warranty of 12 months.

Input Devices and Navigation - Google's GBoard as keyboard

The Doogee S55 uses Google's GBoard standard keyboard, which allows you to perform input quickly and easily. The touchscreen responds reliably to touch and confirms any input with a slight vibration. The navigation keys are below the display. Due to the lack of illumination, they are hard to see, so you cannot immediately recognize the function of each key.

While drag-and-drop movements are easy to perform, the display surface offers slightly too much resistance to the finger tips. The smartphone can be easily unlocked via the fingerprint sensor on the back, as long as the finger is placed correctly on the sensor.

Keyboard of the Doogee S55
Keyboard of the Doogee S55

Display - The S55 smartphone with a bright display

Subpixel grid
Subpixel grid

The display of the Doogee S55 is a 5.5-inch IPS panel in the 18:9 format, offering a resolution of 1440x720 pixels. In order to do justice to the claim of being an outdoor smartphone, the display is reinforced with Corning Gorilla Glass 3. Compared to our selected comparison devices, the smartphone offers a good brightness value of 567.9 cd/m² on average, while the brightness distribution of 85% is rather below average.

535
cd/m²
567
cd/m²
617
cd/m²
551
cd/m²
573
cd/m²
581
cd/m²
524
cd/m²
570
cd/m²
593
cd/m²
Distribution of brightness
X-Rite i1Pro 2
Maximum: 617 cd/m² Average: 567.9 cd/m² Minimum: 22.3 cd/m²
Brightness Distribution: 85 %
Center on Battery: 573 cd/m²
Contrast: 630:1 (Black: 0.91 cd/m²)
ΔE Color 6.96 | 0.4-29.43 Ø6.2
ΔE Greyscale 6.3 | 0.64-98 Ø6.5
90.6% sRGB (Calman 2D)
Gamma: 1.87
Doogee S55
IPS, 1440x720, 5.5
Crosscall Action-X3
IPS, 1280x800, 5
Cubot King Kong
IPS, 1280x720, 5
Ulefone Armor X
IPS, 1440x720, 5.5
Oukitel WP5000
IPS, 1440x720, 5.7
Screen
21%
23%
33%
-31%
Brightness middle
573
417
-27%
466
-19%
564
-2%
506
-12%
Brightness
568
425
-25%
449
-21%
541
-5%
503
-11%
Brightness Distribution
85
91
7%
90
6%
91
7%
86
1%
Black Level *
0.91
0.29
68%
0.25
73%
0.37
59%
0.97
-7%
Contrast
630
1438
128%
1864
196%
1524
142%
522
-17%
Colorchecker DeltaE2000 *
6.96
7.12
-2%
7.03
-1%
5.1
27%
9.4
-35%
Colorchecker DeltaE2000 max. *
12.14
10.19
16%
16.25
-34%
9.6
21%
19.9
-64%
Greyscale DeltaE2000 *
6.3
6.1
3%
7.1
-13%
5.4
14%
13
-106%
Gamma
1.87 118%
2.687 82%
2.26 97%
2.1 105%
2.59 85%
CCT
7606 85%
7687 85%
7244 90%
7755 84%
10219 64%

* ... smaller is better

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 detected 96 Hz ≤ 10 % brightness setting

The display backlight flickers at 96 Hz (Likely utilizing PWM) Flickering detected at a brightness setting of 10 % and below. There should be no flickering or PWM above this brightness setting.

The frequency of 96 Hz is very low, so the flickering may cause eyestrain and headaches after extended use.

In comparison: 53 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 8929 (minimum: 43 - maximum: 142900) Hz was measured.

Our measurements attest the Doogee S55 with a meager contrast ratio of 630:1 and a below-average black value of 0.92 cd/m². Due to these values, the colors do not appear well defined and the black tones appear as if covered by a gray veil. In addition, we see a significant blue tint in our CalMAN measurements.

CalMAN - Color Accuracy
CalMAN - Color Accuracy
CalMAN - Color Space
CalMAN - Color Space
CalMAN - Grayscales
CalMAN - Grayscales
CalMAN - Saturation
CalMAN - Saturation

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
24 ms ... rise ↗ and fall ↘ combined↗ 9 ms rise
↘ 15 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 0.8 (minimum) to 240 (maximum) ms. » 32 % of all devices are better.
This means that the measured response time is similar to the average of all tested devices (25.6 ms).
       Response Time 50% Grey to 80% Grey
48 ms ... rise ↗ and fall ↘ combined↗ 21 ms rise
↘ 27 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers.
In comparison, all tested devices range from 0.9 (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 (41 ms).

The Doogee S55 can be used easily outdoors, as long as you prefer shady places. In bright light it is difficult to read the display contents. This is exacerbated by strong reflections that make it even harder to see the display.

Outdoor use
Outdoor use
Outdoor use
Outdoor use

The viewing angles of the IPS panel of the Doogee S55 are very stable. As long as no reflections obscure the view, the display contents can be read from almost any angle, making it possible to use the smartphone in unusual positions.

Viewing angle stability
Viewing angle stability
Viewing angle stability
Viewing angle stability

Performance - A robust mid-range smartphone from Doogee

In the Doogee S55, a variant of the Mediatek MT6750 SoC with a clock speed of 1.5 GHz and eight CPU cores ensures a smooth system operation. The processor is supported by an ARM Mali-T860 MP2 graphics unit, 4 GB of RAM, and 64 GB of eMMC flash storage. In our benchmarks, the smartphone achieves results which place it in the middle of our comparison field. However, our test unit is able to surpass more expensive devices repeatedly and almost achieves the performance of the significantly more expensive Crosscall Action-X3.

AnTuTu v7 - Total Score (sort by value)
Doogee S55
56375 Points ∼48%
Crosscall Action-X3
57023 Points ∼48% +1%
Cubot King Kong
21088 Points ∼18% -63%
Ulefone Armor X
46435 Points ∼39% -18%
Oukitel WP5000
78088 Points ∼66% +39%
Average Mediatek MT6750 (52278 - 56639, n=11)
44664 Points ∼38% -21%
Average of class Smartphone (17073 - 348178, n=171)
117893 Points ∼100% +109%
PCMark for Android
Work 2.0 performance score (sort by value)
Doogee S55
3257 Points ∼72%
Crosscall Action-X3
3666 Points ∼81% +13%
Cubot King Kong
0 Points ∼0% -100%
Ulefone Armor X
3184 Points ∼70% -2%
Oukitel WP5000
4174 Points ∼92% +28%
Average Mediatek MT6750 (3257 - 3394, n=18)
2858 Points ∼63% -12%
Average of class Smartphone (3146 - 9868, n=256)
4551 Points ∼100% +40%
Work performance score (sort by value)
Doogee S55
4190 Points ∼85%
Crosscall Action-X3
4665 Points ∼94% +11%
Cubot King Kong
3041 Points ∼61% -27%
Ulefone Armor X
4298 Points ∼87% +3%
Oukitel WP5000
4947 Points ∼100% +18%
Average Mediatek MT6750 (4190 - 4532, n=14)
3673 Points ∼74% -12%
Average of class Smartphone (4058 - 13531, n=424)
4956 Points ∼100% +18%
BaseMark OS II
Web (sort by value)
Doogee S55
624 Points ∼70%
Cubot King Kong
567 Points ∼64% -9%
Ulefone Armor X
7 Points ∼1% -99%
Oukitel WP5000
888 Points ∼100% +42%
Average Mediatek MT6750 (9 - 1137, n=18)
432 Points ∼49% -31%
Average of class Smartphone (7 - 1731, n=500)
697 Points ∼78% +12%
Graphics (sort by value)
Doogee S55
649 Points ∼37%
Cubot King Kong
138 Points ∼8% -79%
Ulefone Armor X
188 Points ∼11% -71%
Oukitel WP5000
1120 Points ∼65% +73%
Average Mediatek MT6750 (471 - 649, n=18)
590 Points ∼34% -9%
Average of class Smartphone (18 - 15969, n=500)
1735 Points ∼100% +167%
Memory (sort by value)
Doogee S55
1030 Points ∼83%
Cubot King Kong
403 Points ∼32% -61%
Ulefone Armor X
900 Points ∼72% -13%
Oukitel WP5000
1229 Points ∼99% +19%
Average Mediatek MT6750 (609 - 1288, n=18)
835 Points ∼67% -19%
Average of class Smartphone (21 - 6283, n=500)
1243 Points ∼100% +21%
System (sort by value)
Doogee S55
2003 Points ∼62%
Cubot King Kong
985 Points ∼31% -51%
Ulefone Armor X
1491 Points ∼46% -26%
Oukitel WP5000
3225 Points ∼100% +61%
Average Mediatek MT6750 (1077 - 2003, n=18)
1770 Points ∼55% -12%
Average of class Smartphone (369 - 12202, n=500)
2509 Points ∼78% +25%
Overall (sort by value)
Doogee S55
956 Points ∼68%
Crosscall Action-X3
Points ∼0% -100%
Cubot King Kong
420 Points ∼30% -56%
Ulefone Armor X
206 Points ∼15% -78%
Oukitel WP5000
1409 Points ∼100% +47%
Average Mediatek MT6750 (253 - 965, n=18)
653 Points ∼46% -32%
Average of class Smartphone (150 - 6097, n=504)
1253 Points ∼89% +31%
Geekbench 4.1/4.2
Compute RenderScript Score (sort by value)
Doogee S55
1888 Points ∼42%
Crosscall Action-X3
2045 Points ∼45% +8%
Cubot King Kong
773 Points ∼17% -59%
Ulefone Armor X
1416 Points ∼31% -25%
Oukitel WP5000
2663 Points ∼59% +41%
Average Mediatek MT6750 (1393 - 1935, n=15)
1707 Points ∼38% -10%
Average of class Smartphone (836 - 21070, n=198)
4508 Points ∼100% +139%
64 Bit Multi-Core Score (sort by value)
Doogee S55
2765 Points ∼64%
Crosscall Action-X3
2360 Points ∼55% -15%
Cubot King Kong
1237 Points ∼29% -55%
Ulefone Armor X
1847 Points ∼43% -33%
Oukitel WP5000
3943 Points ∼92% +43%
Average Mediatek MT6750 (1790 - 2765, n=17)
2511 Points ∼58% -9%
Average of class Smartphone (883 - 11598, n=248)
4298 Points ∼100% +55%
64 Bit Single-Core Score (sort by value)
Doogee S55
682 Points ∼54%
Crosscall Action-X3
634 Points ∼50% -7%
Cubot King Kong
425 Points ∼34% -38%
Ulefone Armor X
662 Points ∼52% -3%
Oukitel WP5000
863 Points ∼68% +27%
Average Mediatek MT6750 (590 - 682, n=17)
616 Points ∼49% -10%
Average of class Smartphone (394 - 4824, n=249)
1267 Points ∼100% +86%
3DMark
2560x1440 Sling Shot Extreme (ES 3.1) Physics (sort by value)
Doogee S55
1124 Points ∼68%
Crosscall Action-X3
1098 Points ∼67% -2%
Ulefone Armor X
585 Points ∼36% -48%
Oukitel WP5000
Points ∼0% -100%
Average Mediatek MT6750 (702 - 1233, n=18)
1082 Points ∼66% -4%
Average of class Smartphone (2281 - 4216, n=352)
1642 Points ∼100% +46%
2560x1440 Sling Shot Extreme (ES 3.1) Graphics (sort by value)
Doogee S55
199 Points ∼17%
Crosscall Action-X3
234 Points ∼20% +18%
Ulefone Armor X
87 Points ∼7% -56%
Oukitel WP5000
Points ∼0% -100%
Average Mediatek MT6750 (90 - 329, n=18)
283 Points ∼24% +42%
Average of class Smartphone (815 - 5241, n=352)
1186 Points ∼100% +496%
2560x1440 Sling Shot Extreme (ES 3.1) (sort by value)
Doogee S55
244 Points ∼22%
Crosscall Action-X3
284 Points ∼25% +16%
Ulefone Armor X
107 Points ∼9% -56%
Oukitel WP5000
Points ∼0% -100%
Average Mediatek MT6750 (113 - 393, n=18)
336 Points ∼30% +38%
Average of class Smartphone (951 - 4734, n=360)
1134 Points ∼100% +365%
2560x1440 Sling Shot OpenGL ES 3.0 Physics (sort by value)
Doogee S55
1110 Points ∼72%
Crosscall Action-X3
1099 Points ∼71% -1%
Ulefone Armor X
581 Points ∼38% -48%
Oukitel WP5000
Points ∼0% -100%
Average Mediatek MT6750 (694 - 1219, n=18)
1059 Points ∼69% -5%
Average of class Smartphone (532 - 4215, n=385)
1538 Points ∼100% +39%
2560x1440 Sling Shot OpenGL ES 3.0 Graphics (sort by value)
Doogee S55
127 Points ∼8%
Crosscall Action-X3
492 Points ∼30% +287%
Ulefone Armor X
129 Points ∼8% +2%
Oukitel WP5000
Points ∼0% -100%
Average Mediatek MT6750 (109 - 484, n=18)
411 Points ∼25% +224%
Average of class Smartphone (46 - 8312, n=385)
1627 Points ∼100% +1181%
2560x1440 Sling Shot OpenGL ES 3.0 (sort by value)
Doogee S55
158 Points ∼11%
Crosscall Action-X3
561 Points ∼41% +255%
Ulefone Armor X
156 Points ∼11% -1%
Oukitel WP5000
Points ∼0% -100%
Average Mediatek MT6750 (136 - 559, n=18)
471 Points ∼34% +198%
Average of class Smartphone (58 - 6454, n=393)
1384 Points ∼100% +776%
1280x720 offscreen Ice Storm Unlimited Physics (sort by value)
Doogee S55
9934 Points ∼77%
Crosscall Action-X3
8864 Points ∼69% -11%
Cubot King Kong
8112 Points ∼63% -18%
Ulefone Armor X
10195 Points ∼79% +3%
Oukitel WP5000
Points ∼0% -100%
Average Mediatek MT6750 (7716 - 10553, n=18)
8773 Points ∼68% -12%
Average of class Smartphone (3958 - 37475, n=540)
12875 Points ∼100% +30%
1280x720 offscreen Ice Storm Unlimited Graphics Score (sort by value)
Doogee S55
9476 Points ∼53%
Crosscall Action-X3
9342 Points ∼52% -1%
Cubot King Kong
2396 Points ∼13% -75%
Ulefone Armor X
3585 Points ∼20% -62%
Oukitel WP5000
Points ∼0% -100%
Average Mediatek MT6750 (9476 - 10361, n=18)
8680 Points ∼48% -8%
Average of class Smartphone (2465 - 162695, n=540)
17971 Points ∼100% +90%
1280x720 offscreen Ice Storm Unlimited Score (sort by value)
Doogee S55
9574 Points ∼63%
Crosscall Action-X3
9231 Points ∼61% -4%
Cubot King Kong
2841 Points ∼19% -70%
Ulefone Armor X
4188 Points ∼28% -56%
Oukitel WP5000
Points ∼0% -100%
Average Mediatek MT6750 (9210 - 10269, n=18)
8706 Points ∼58% -9%
Average of class Smartphone (2915 - 77599, n=541)
15098 Points ∼100% +58%
GFXBench (DX / GLBenchmark) 2.7
1920x1080 T-Rex HD Offscreen C24Z16 (sort by value)
Doogee S55
17 fps ∼54%
Crosscall Action-X3
15 fps ∼48% -12%
Cubot King Kong
4.2 fps ∼13% -75%
Ulefone Armor X
5.9 fps ∼19% -65%
Oukitel WP5000
24 fps ∼77% +41%
Average Mediatek MT6750 (12 - 17, n=15)
15.2 fps ∼49% -11%
Average of class Smartphone (4.1 - 251, n=565)
31.3 fps ∼100% +84%
T-Rex HD Onscreen C24Z16 (sort by value)
Doogee S55
23 fps ∼74%
Crosscall Action-X3
26 fps ∼84% +13%
Cubot King Kong
7.5 fps ∼24% -67%
Ulefone Armor X
9.2 fps ∼30% -60%
Oukitel WP5000
31 fps ∼100% +35%
Average Mediatek MT6750 (12 - 25, n=15)
20.5 fps ∼66% -11%
Average of class Smartphone (6.9 - 120, n=568)
24.9 fps ∼80% +8%
GFXBench 3.0
off screen Manhattan Offscreen OGL (sort by value)
Doogee S55
7.1 fps ∼42%
Crosscall Action-X3
6.7 fps ∼40% -6%
Ulefone Armor X
2.7 fps ∼16% -62%
Oukitel WP5000
11 fps ∼65% +55%
Average Mediatek MT6750 (5.3 - 7.1, n=16)
6.31 fps ∼38% -11%
Average of class Smartphone (2.2 - 132, n=487)
16.8 fps ∼100% +137%
on screen Manhattan Onscreen OGL (sort by value)
Doogee S55
13 fps ∼72%
Crosscall Action-X3
14 fps ∼78% +8%
Ulefone Armor X
5.1 fps ∼28% -61%
Oukitel WP5000
18 fps ∼100% +38%
Average Mediatek MT6750 (5.6 - 13, n=16)
9.94 fps ∼55% -24%
Average of class Smartphone (4.1 - 115, n=490)
16 fps ∼89% +23%
GFXBench 3.1
off screen Manhattan ES 3.1 Offscreen (sort by value)
Doogee S55
4.7 fps ∼33%
Crosscall Action-X3
4.4 fps ∼31% -6%
Ulefone Armor X
1.6 fps ∼11% -66%
Oukitel WP5000
6.8 fps ∼48% +45%
Average Mediatek MT6750 (3.5 - 4.7, n=16)
4.22 fps ∼30% -10%
Average of class Smartphone (10 - 88, n=349)
14.3 fps ∼100% +204%
on screen Manhattan ES 3.1 Onscreen (sort by value)
Doogee S55
9.5 fps ∼63%
Crosscall Action-X3
10 fps ∼67% +5%
Ulefone Armor X
3.3 fps ∼22% -65%
Oukitel WP5000
15 fps ∼100% +58%
Average Mediatek MT6750 (3.8 - 10, n=16)
7.39 fps ∼49% -22%
Average of class Smartphone (9.8 - 110, n=352)
13.9 fps ∼93% +46%
GFXBench
off screen Car Chase Offscreen (sort by value)
Doogee S55
2.5 fps ∼25%
Crosscall Action-X3
2.4 fps ∼24% -4%
Ulefone Armor X
0.9 fps ∼9% -64%
Oukitel WP5000
4.1 fps ∼42% +64%
Average Mediatek MT6750 (1.9 - 2.5, n=17)
2.26 fps ∼23% -10%
Average of class Smartphone (6.3 - 54, n=280)
9.86 fps ∼100% +294%
on screen Car Chase Onscreen (sort by value)
Doogee S55
4.9 fps ∼55%
Crosscall Action-X3
5.3 fps ∼60% +8%
Ulefone Armor X
1.6 fps ∼18% -67%
Oukitel WP5000
7.3 fps ∼82% +49%
Average Mediatek MT6750 (2.3 - 4.9, n=17)
3.52 fps ∼40% -28%
Average of class Smartphone (6 - 58, n=283)
8.89 fps ∼100% +81%

Legend

 
Doogee S55 Mediatek MT6750, ARM Mali-T860 MP2, 64 GB eMMC Flash
 
Crosscall Action-X3 Qualcomm Snapdragon 430 (MSM8937), Qualcomm Adreno 505, 32 GB eMMC Flash
 
Cubot King Kong Mediatek MT6580M, ARM Mali-400 MP2, 16 GB eMMC Flash
 
Ulefone Armor X Mediatek MT6739, PowerVR GE8100, 16 GB eMMC Flash
 
Oukitel WP5000 Mediatek Helio P25, ARM Mali-T880 MP2, 64 GB eMMC Flash

The Doogee S55 is also able to achieve a good place in the middle of our comparison field in the browser benchmarks. In everyday operation, you can surf easily and quickly with the Chinese smartphone, and media content is also loaded within a suitable time frame.

JetStream 1.1 - 1.1 Total Score
Average of class Smartphone (10.8 - 273, n=423)
36.7 Points ∼100% +96%
Oukitel WP5000 (Chrome 66)
26.91 Points ∼73% +44%
Doogee S55 (Chrome 67)
18.724 Points ∼51%
Average Mediatek MT6750 (12.7 - 20.8, n=18)
18.5 Points ∼50% -1%
Ulefone Armor X (Chrome 66)
18.148 Points ∼49% -3%
Crosscall Action-X3 (Chrome 68)
18.048 Points ∼49% -4%
Cubot King Kong (Chrome 66)
12.789 Points ∼35% -32%
Octane V2 - Total Score
Average of class Smartphone (1506 - 43280, n=559)
5558 Points ∼100% +63%
Oukitel WP5000 (Chrome 66)
5132 Points ∼92% +50%
Doogee S55 (Chrome 67)
3417 Points ∼61%
Crosscall Action-X3 (Chrome 68)
3251 Points ∼58% -5%
Average Mediatek MT6750 (2468 - 3506, n=18)
3157 Points ∼57% -8%
Ulefone Armor X (Chrome 66)
3151 Points ∼57% -8%
Cubot King Kong (Chrome 66)
2208 Points ∼40% -35%
Mozilla Kraken 1.1 - Total Score
Cubot King Kong (Chrome 66)
18388.4 ms * ∼100% -36%
Ulefone Armor X (Chrome 66)
15875.7 ms * ∼86% -18%
Average Mediatek MT6750 (11708 - 22627, n=18)
14242 ms * ∼77% -5%
Doogee S55 (Chrome 67)
13510.3 ms * ∼73%
Crosscall Action-X3 (Chrome 68)
13331 ms * ∼72% +1%
Average of class Smartphone (603 - 59466, n=579)
11477 ms * ∼62% +15%
Oukitel WP5000 (Chrome 66)
10209.2 ms * ∼56% +24%

* ... smaller is better

The storage performance of the Doogee S55 is mixed. In our benchmark test, the 64-GB internal storage achieves results that place it in the lower middle of the field of our comparison list. The storage can be expanded considerably via the internal microSD card reader. However, we were unable to measure a test result using our Toshiba Exceria Pro reference storage card in our test. A second card from Kingston was also not recognized in our test. Finally, an affordable Qumos microSD card with 32 GB worked and delivered good read rates, but below-average write rates.

Doogee S55Crosscall Action-X3Cubot King KongUlefone Armor XOukitel WP5000Average 64 GB eMMC FlashAverage of class Smartphone
AndroBench 3-5
64%
-54%
44%
24%
79%
39%
Sequential Write 256KB SDCard
14.11
56.17 (Toshiba Exceria Pro M501)
298%
10.3 (Kingston 32GB)
-27%
62.57 (Toshiba Exceria Pro M501)
343%
20.5 (Toshiba Exceria Pro M501)
45%
54.3 (14.1 - 74.7, n=71)
285%
45.8 (3.4 - 87.1, n=323)
225%
Sequential Read 256KB SDCard
73.73
84.13 (Toshiba Exceria Pro M501)
14%
20.6 (Kingston 32GB)
-72%
81.54 (Toshiba Exceria Pro M501)
11%
21.11 (Toshiba Exceria Pro M501)
-71%
72.6 (21.1 - 86.9, n=71)
-2%
64 (8.2 - 96.5, n=323)
-13%
Random Write 4KB
13.17
8.4
-36%
7
-47%
10.17
-23%
9.89
-25%
19.8 (3.4 - 87.1, n=78)
50%
16.1 (0.14 - 164, n=608)
22%
Random Read 4KB
28.86
47
63%
17.2
-40%
14.7
-49%
66.88
132%
50.3 (11.4 - 149, n=78)
74%
38.3 (1.59 - 173, n=608)
33%
Sequential Write 256KB
97.14
139.3
43%
32.6
-66%
82.85
-15%
162.14
67%
164 (40 - 246, n=78)
69%
79.8 (2.99 - 246, n=608)
-18%
Sequential Read 256KB
268.07
264.7
-1%
77.3
-71%
255.34
-5%
257.52
-4%
269 (115 - 704, n=78)
0%
230 (12.1 - 895, n=608)
-14%

Games - Doogee S55 suitable for gaming

The Doogee S55 is suitable for casual games and games with medium demands on the graphics performance. The games that we tested ran without any problems and only needed average amounts of times to load. The touchscreen offers a little too much resistance to the fingertips, lowering the level of comfort significantly during longer gaming sessions. The position sensor reacts with a slight delay to movements of the smartphone, which must be taken into account when controlling games that use this. 

Arena of Valor
Arena of Valor
Dead Trigger 2
Dead Trigger 2

Emissions - Doogee outdoor smartphone with a good speaker

Temperatures

During idle operation, the temperatures of the S55 rarely rise above 30 °C (86 °F). Under load on the other hand, we measure values above the 40-degree mark (104 °F). Correspondingly, the smartphone can feel hot in some spots. However, this should rarely or never happen in everyday life, and we do not expect any limitations in the operation of the Doogee smartphone due to high temperatures.

Max. Load
 47.5 °C
118 F
39.6 °C
103 F
39.3 °C
103 F
 
 46.3 °C
115 F
38.8 °C
102 F
40.5 °C
105 F
 
 44.5 °C
112 F
38.8 °C
102 F
38.7 °C
102 F
 
Maximum: 47.5 °C = 118 F
Average: 41.6 °C = 107 F
34.5 °C
94 F
38.7 °C
102 F
41.8 °C
107 F
35.1 °C
95 F
38.8 °C
102 F
42 °C
108 F
35.5 °C
96 F
38.8 °C
102 F
40.4 °C
105 F
Maximum: 42 °C = 108 F
Average: 38.4 °C = 101 F
Power Supply (max.)  43.6 °C = 110 F | Room Temperature 22.2 °C = 72 F | Voltcraft IR-260
(-) The average temperature for the upper side under maximal load is 41.6 °C / 107 F, compared to the average of 33.2 °C / 92 F for the devices in the class Smartphone.
(-) The maximum temperature on the upper side is 47.5 °C / 118 F, compared to the average of 35.7 °C / 96 F, ranging from 22.4 to 51.7 °C for the class Smartphone.
(±) The bottom heats up to a maximum of 42 °C / 108 F, compared to the average of 34.2 °C / 94 F
(+) In idle usage, the average temperature for the upper side is 30.1 °C / 86 F, compared to the device average of 33.2 °C / 92 F.
Heat map - front
Heat map - front
Heat map - back
Heat map - back

Speaker

Speaker characteristics
Speaker characteristics

The speaker of the Doogee S55 is able to deliver a wide sound spectrum in the mid-range. Highs drop sharply and low notes are practically nonexistent. However, the speaker is still suitable to reproduce media content and can shine with a suitable volume.

A 3.5-mm port is available to connect external audio devices. While it accepts the corresponding plugs tightly, the plug does not click into place, so it may slip out accidentally.

dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs203231.72531.930.53131.728.84031.129.65036.236.86326.329.48022.227.110022.523.512525.422.216018.924.420017.13325016.9393151445.340013.554.750013.858.363012.562.380012.165100011.464.8125011.262.716001164.7200010.868250010.567.8315010.866.7400010.366.4500010.371.1630010.469.8800010.5611000010.449.51250010.347.51600010.445.7SPL65.523.878.5N18.20.541median 11.2median 61Delta2.51138.137.937.634.835.930.328.128.328.629.327.826.429.824.330.424.722.220.823.922202919.434.217.240.216.45016.553.915.159.615.165.614.666.414.464.413.766.512.365.212.161.811.861.311.759.911.759.911.660.411.657.911.557.611.558.511.656.957.971.366.356.725.974.811.324.316.810.40.832.5median 14.4median 58.53.39.8hearing rangehide median Pink NoiseDoogee S55Crosscall Action-X3
Frequency diagram (checkboxes can be checked and unchecked to compare devices)
Doogee S55 audio analysis

(±) | speaker loudness is average but good (78.5 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 29.8% lower than median
(±) | linearity of bass is average (9.4% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 3.8% away from median
(+) | mids are linear (6.9% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 6.9% higher than median
(±) | linearity of highs is average (8% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (25% difference to median)
Compared to same class
» 49% of all tested devices in this class were better, 13% similar, 37% worse
» The best had a delta of 13%, average was 25%, worst was 44%
Compared to all devices tested
» 71% of all tested devices were better, 7% similar, 22% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Crosscall Action-X3 audio analysis

(±) | speaker loudness is average but good (74.8 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 30% lower than median
(±) | linearity of bass is average (9% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 6.2% higher than median
(±) | linearity of mids is average (8.9% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 1.7% away from median
(+) | highs are linear (2.8% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (24% difference to median)
Compared to same class
» 41% of all tested devices in this class were better, 14% similar, 46% worse
» The best had a delta of 13%, average was 25%, worst was 44%
Compared to all devices tested
» 66% of all tested devices were better, 8% similar, 26% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Battery Life - A long battery life despite a high power consumption

Power Consumption

Our measurements of the power consumption show that the Doogee S55 is not a frugal device. With a minimum consumption of 2.3 watts in idle operation and a maximum value of 11.2 watts under load, the smartphone has to be content with the last place in our comparison list.

The included charger offers an output of 10 watts and could thus hit the limits of the amount of power it could stably provide under full load.

Power Consumption
Off / Standbydarklight 0 / 0.06 Watt
Idledarkmidlight 2.3 / 3.5 / 5.9 Watt
Load midlight 8.7 / 11.2 Watt
 color bar
Key: min: dark, med: mid, max: light        Metrahit Energy
Doogee S55
5500 mAh
Crosscall Action-X3
3500 mAh
Cubot King Kong
4400 mAh
Ulefone Armor X
5500 mAh
Oukitel WP5000
5200 mAh
Average Mediatek MT6750
 
Average of class Smartphone
 
Power Consumption
44%
60%
49%
51%
46%
56%
Idle Minimum *
2.3
1.1
52%
0.7
70%
1.22
47%
1.18
49%
1.154 (0.57 - 2.3, n=18)
50%
0.879 (0.2 - 3.4, n=642)
62%
Idle Average *
3.5
1.9
46%
1.6
54%
2.07
41%
2.17
38%
2.05 (1.42 - 3.5, n=18)
41%
1.721 (0.6 - 6.2, n=641)
51%
Idle Maximum *
5.9
2.9
51%
1.8
69%
2.14
64%
2.26
62%
2.46 (1.47 - 5.9, n=18)
58%
1.998 (0.74 - 6.6, n=642)
66%
Load Average *
8.7
4.8
45%
3.8
56%
4.92
43%
3.68
58%
5.19 (3.24 - 10.8, n=18)
40%
4.04 (0.8 - 10.8, n=636)
54%
Load Maximum *
11.2
8.4
25%
5.5
51%
5.4
52%
6.06
46%
6.5 (3.3 - 12.4, n=18)
42%
5.76 (1.2 - 14.2, n=636)
49%

* ... smaller is better

Battery Life

The high power consumption of the Doogee S55 also has an effect on the battery life. Although the smartphone achieves a good battery life of more than 14 hours in our realistic WLAN battery test, this value is also achieved by the Crosscall Action-X3 with a smaller battery, for example.

The included 10-watt charger needs about five hours to completely recharge the battery.

Battery Runtime
NBC WiFi Websurfing Battery Test 1.3
14h 04min
Doogee S55
5500 mAh
Crosscall Action-X3
3500 mAh
Cubot King Kong
4400 mAh
Ulefone Armor X
5500 mAh
Oukitel WP5000
5200 mAh
Battery Runtime
WiFi v1.3
844
843
0%
1098
30%
845
0%
1189
41%

Pros

+ suitable system performance
+ very robust IP68 case
+ good display brightness

Cons

- mediocre camera performance
- high power consumption
- GPS only suitable for simple tasks

Verdict - An affordable outdoor smartphone

Testing the Doogee S55. Test unit provided by Doogee.
Testing the Doogee S55. Test unit provided by Doogee.

In our test, the Doogee S55 presents itself as an extremely robust smartphone with a good system performance and a long battery life. Compared to other smartphones in its class, the low-contrast display and the two cameras stand out negatively. The large battery could offer an even longer runtime if it was not for the high power consumption.

The Doogee S55 is an affordable outdoor smartphone for those who demand robustness. With its affordable price, it lends itself for situations where you do not want to use a more expensive phone.

With the S55, interested buyers receive a smartphone for extreme situations. With its sturdy case and Corning Gorilla Glass 3, it is protected from shocks, and the IP68 certification promises dust and moisture resistance. On the other hand, users should be prepared to get an inaccurate GPS and consider that the dual camera is really only sufficient for simple snapshots.

Doogee S55 - 08/14/2018 v6
Mike Wobker

Chassis
78%
Keyboard
67 / 75 → 90%
Pointing Device
78%
Connectivity
39 / 60 → 64%
Weight
87%
Battery
97%
Display
81%
Games Performance
16 / 63 → 25%
Application Performance
41 / 70 → 59%
Temperature
86%
Noise
100%
Audio
61 / 91 → 67%
Camera
48%
Average
68%
76%
Smartphone - Weighted Average

Pricecompare

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> Notebook / Laptop Reviews and News > Reviews > Doogee S55 Smartphone Review
Mike Wobker, 2018-08-17 (Update: 2018-08-17)