Notebookcheck

TrekStor WinPhone 4.7 HD Smartphone Review

Daniel Schmidt, Tanja Hinum, 04/22/2015

Lightweight. The German manufacturer, TrekStor, offers a very light, yet large smartphone in the WinPhone. The device uses Windows Phone 8.1 and employs a quad-core CPU, an HD display and an 8 MP lens. A great smartphone for a low price?

For the original German review, see here.

The TrekStor WinPhone 4.7 HD is not only slim but also light. It runs on an entry-level SoC from Qualcomm and attracts the eye with its HD display and 8 MP camera. Furthermore, this is a Windows Phone 8.1 but Microsoft does not make it. The manufacturer cites a recommended retail price of 149  Euros (~$161). At Notebooksbilliger, you will receive a 32 GB MicroSD card with the purchase.

The competition includes the Honor Holly, the Motorola Moto E, the Sony Xperia M2, the Acer Liquid Z5 and the Lumia 630. The successor of the latter, the Lumia 640, has now been released and we looked at the camera quality in our review.

Working For Notebookcheck

Are you a techie who knows how to write? Then join our Team! Especially English native speakers welcome!

Currently wanted: 
News and Editorial Editor - Details here

Trekstor WinPhone 4.7 HD
Graphics adapter
Qualcomm Adreno 302, Core: 400 MHz
Memory
1024 MB 
, LPDDR2
Display
4.7 inch 16:9, 1280 x 720 pixel, Capacitive multi-touchscreen, IPS, glossy: yes
Storage
8 GB eMMC Flash, 8 GB 
,
Connections
1 USB 2.0, Audio Connections: Audio combo jack, Card Reader: MicroSD up to 128 GB (SD, SDHC, SDXC), Sensors: Light, Proximity and position sensor, GPS, Glonass
Networking
802.11 b/g/n (b/g/n = Wi-Fi 4), Bluetooth 4.0 mit EDR und A2DP, GSM/GRPS/EDGE (850, 900, 1800 and 1900 MHz), HSPA+
Size
height x width x depth (in mm): 7.5 x 136 x 68 ( = 0.3 x 5.35 x 2.68 in)
Battery
7 Wh Lithium-Polymer, 1750 mAh, 3.7 V
Operating System
Microsoft Windows Phone 8.1
Camera
Webcam: 2.0 MP, Main camera: 8.0 MP (Auto-focus, LED light, 480p-Video)
Additional features
Speakers: a mono speaker, Keyboard: virtual, Modular power adapter, Data cable, Short manual, two swappable covers (red and yellow), Bing Apps, Microsoft Office Mobile , 24 Months Warranty
Weight
97 g ( = 3.42 oz / 0.21 pounds), Power Supply: 68 g ( = 2.4 oz / 0.15 pounds)
Price
149 Euro
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

Case

The case of the TrekStor WinPhone 4.7 HD is quite slim at 7.5 mm (~0.3 inches) and light at 97 grams (~3.4 oz). The synthetic material used for the back of the device looks and feels cheap.

The smartphone is quite sturdy despite being skinny, but pressure on the case leads to some distortions on the screen. The gaps in the case may not be small but they are even and the WinPhone looks good.

The back of the device is removable. The user will find a removable battery, a MicroSD card slot and both Micro SIM slots. The device has three available backs: black, red and yellow.

145.5 mm / 5.73 inch 73.5 mm / 2.89 inch 8.8 mm / 0.3465 inch 147 g0.3241 lbs142.2 mm / 5.6 inch 72.3 mm / 2.85 inch 9.4 mm / 0.3701 inch 157 g0.3461 lbs139.6 mm / 5.5 inch 71.1 mm / 2.8 inch 8.6 mm / 0.3386 inch 149 g0.3285 lbs136 mm / 5.35 inch 68 mm / 2.68 inch 7.5 mm / 0.2953 inch 97 g0.2138 lbs129.9 mm / 5.11 inch 66.8 mm / 2.63 inch 12.3 mm / 0.4843 inch 145 g0.3197 lbs129.5 mm / 5.1 inch 66.7 mm / 2.63 inch 9.2 mm / 0.3622 inch 134 g0.2954 lbs

Connectivity

The Micro USB 2.0 port is for charging the device and transferring data. It does not support video streaming or peripherals.

The MicroSD card reader supports cards up to 128 GB, which is quite generous for this price class. The good memory management of the Windows Phone OS allows installation of Apps directly on the external memory.

The details on the sensors are sparse. We believe the device has a position and a gyro sensor. Furthermore, a proximity and ambient light sensor are included.

Software

The OS for the smartphone is the Microsoft Windows Phone 8.1 (8.10.12400.899). The manufacturer has not made many special tweaks to the OS. The Action Center is an exception: instead of the usual four segments, we have five. There are no special apps preinstalled. The device comes with the Bing Apps for news, sports and heath. Unfortunately, despite all the latest updates, Cortana is not on-board as it is in the Alpha phase and is reserved for Lumia smartphones for now. Thankfully, the smartphone will receive the update to Windows 10.

Communication & GPS 

The TrekStor WinPhone 4.7 HD supports HSPA for Internet connectivity. However, it is slower than LTE, which is not available for this device. The supported frequencies are limited as well. The manufacturer specifies the 2,100 MHz frequency for mobile data use, but the 900 MHz is probably also supported. Quad Band GSM ensures smooth calling quality.

The WLAN module supports the IEEE-802.11 b/g/n standards and uses the 2.4 GHz frequency. The range is average and Bluetooth 4.0 is included.

The GPS receiver is surprisingly accurate in a test App and outdoors, it was accurate up to 6 meters (almost 20 feet).

Telephone & Speech Quality

The speech quality of the TrekStor WinPhone 4.7 HD is decent. Our audio came across without distortions but it was a little quiet. The user has to speak close to the microphone to be clearly understood. Furthermore, the voice resonates slightly. On our end, the audio was easy to understand.

Picture with the front camera.
Picture with the front camera.

Cameras

The front camera of the TrekStor WinPhone 4.7 HD has a 2 MP resolution and offers a modest picture quality. The pictures are not clear and their colors are tinted red. In weak lighting, the pictures can easily turn out blurry.

The main camera on the back is an 8 MP module (3264x2448 pixels) with auto-focus and an LED flash. The pictures are not clear even in daylight and the colors look dark when the pictures are put on a big screen. Smaller pictures are decent but the colors are still too pale.

The weak lighting makes this effect worse and details can become muddy when zooming in. The Lumia 640 does a better job and although its pictures are quite dark and pale, they are detailed.

Videos can be recorded at 864x480 pixels.

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

Accessories & Warranty

The accessories for the TrekStor WinPhone 4.7 HD include a modular power adapter (5 W, 5 V, 1 A), a data cable, two additional back covers, a protective display plastic flap, a short manual and a handout with some legal and security information on it.

The manufacturer offers a 24-month warranty on their product.

Input Devices & Interface

The capacitive touchscreen of the TrekStor WinPhone 4.7 HD reacts reliably to input and translates it quickly into action. However, now and then, the device requires an extra tap to recognize the desired action. The finger can slide easily over the screen, leaving no room for complaint.

The keyboard layout is the standard one for Windows Phone 8.1 and cannot be changed. Swyping gestures are understood and word suggestions are displayed at the top of the keyboard.

The sensor keys under the display are not clearly labeled which makes it hard for unfamiliar users to differentiate between the back and the search keys.

Portrait
Portrait
Landscape
Landscape

Display

The 4.7-inch IPS panel of the TrekStor WinPhone 4.7 HD has a resolution of 1280x720 pixels. The resolution is very high, considering the pricing of the device and similarly high levels of resolution are offered by few other devices (Honor Holly). A display ratio of 16:9 and pixel density of 313 PPI round off the panel.

The brightness of the display reaches up to 443 cd/m², which is quite high. The illumination is balanced at 89%.

436
cd/m²
423
cd/m²
393
cd/m²
430
cd/m²
418
cd/m²
401
cd/m²
443
cd/m²
426
cd/m²
414
cd/m²
Distribution of brightness
X-Rite i1Pro 2
Maximum: 443 cd/m² Average: 420.4 cd/m²
Brightness Distribution: 89 %
Center on Battery: 418 cd/m²
Contrast: 449:1 (Black: 0.93 cd/m²)
ΔE Color 6 | 0.6-29.43 Ø6
ΔE Greyscale 6.36 | 0.64-98 Ø6.2
Gamma: 2.46
Trekstor WinPhone 4.7 HD
Adreno 302, 200 MSM8212, 8 GB eMMC Flash
Honor Holly
Mali-400 MP2, MT6582, 16 GB eMMC Flash
Nokia Lumia 630
Adreno 305, 400 MSM8226, 8 GB eMMC Flash
Motorola Moto E 2. Gen 2015
Adreno 306, 410 MSM8916, 8 GB eMMC Flash
Sony Xperia M2
Adreno 305, 400 MSM8926, 8 GB SSD
Acer Liquid Z5
Mali-400 MP, MT6572, 4 GB Flash
Screen
-0%
-1%
32%
6%
-25%
Brightness middle
418
472
13%
355
-15%
217
-48%
483
16%
339
-19%
Brightness
420
455
8%
350
-17%
204
-51%
467
11%
307
-27%
Brightness Distribution
89
87
-2%
91
2%
55
-38%
93
4%
85
-4%
Black Level *
0.93
0.77
17%
0.73
22%
0.15
84%
0.93
-0%
0.62
33%
Contrast
449
613
37%
486
8%
1447
222%
519
16%
547
22%
Colorchecker DeltaE2000 *
6
8.23
-37%
7.19
-20%
4.12
31%
5.74
4%
10.95
-83%
Greyscale DeltaE2000 *
6.36
8.84
-39%
5.63
11%
4.87
23%
6.83
-7%
12.53
-97%
Gamma
2.46 89%
2.12 104%
1.97 112%
2.38 92%
2.2 100%
2.29 96%
CCT
7974 82%
6819 95%
6293 103%
6019 108%
9470 69%
15632 42%

* ... smaller is better

Unfortunately, the black value of the TrekStor WinPhone 4.7 HD is quite high at 0.93 cd/m² and prevents the device from having a good contrast ratio.

We checked the colors with a photo spectrometer and CalMAN software. The gray levels are quite bad and prevent the device from offering a good picture. The color accuracy is decent for this price class and the slight blue tinge is recognizable on mainly white pictures, but is not disturbing.

Gray levels (Target color spectrum sRGB)
Gray levels (Target color spectrum sRGB)
Color accuracy (Target color spectrum sRGB)
Color accuracy (Target color spectrum sRGB)
Saturation (Target color spectrum sRGB)
Saturation (Target color spectrum sRGB)
Mixed colors (Target color spectrum sRGB)
Mixed colors (Target color spectrum sRGB)

Outdoors the TrekStor WinPhone 4.7 HD is comfortable to use as long as it is not too sunny. In bright surroundings, the reflective surface and poor contrast lower legibility to an unrecognizable level.

The viewing angle stability of the IPS screen is very good. At flat viewing angles, the brightness drops slightly, but we notice a unflattering IPS glowing effect.

Viewing angles of the TrekStor WinPhone 4.7 HD
Viewing angles of the TrekStor WinPhone 4.7 HD
Cloudy skies.
Cloudy skies.

Performance

The TrekStor is equipped with a Qualcomm Snapdragon 200 MSM8212 and 1 GB of RAM. The typical SoC hardware means that the integrated graphics chip, the Adreno 302, is not the fastest on the market. The chipset employed in this model is often found in cheap devices. The performance suffices to run Windows Phone 8.1 fluidly for the most part, with the exception of the occasional stutter. If you start an App, you might encounter a pause while the phone starts up the necessary processes. The few benchmarks we could run confirmed our overall impression.

In terms of browser benchmarks, the test model is not great, which is due to the weak SoC. Windows Phones often perform lower in benchmarks than Android smartphones.

The 8 GB memory is quite generous, allowing for 5 GB free storage for users. If this does not suffice, there is the option of a MicroSD card.

Linpack Android / IOS
Multi Thread (sort by value)
Trekstor WinPhone 4.7 HD
Adreno 302, 200 MSM8212, 8 GB eMMC Flash
238.276 MFLOPS ∼8%
Honor Holly
Mali-400 MP2, MT6582, 16 GB eMMC Flash
236.23 MFLOPS ∼8% -1%
Motorola Moto E 2. Gen 2015
Adreno 306, 410 MSM8916, 8 GB eMMC Flash
231.685 MFLOPS ∼8% -3%
Sony Xperia M2 Aqua
Adreno 305, 400 MSM8926, 8 GB eMMC Flash
260.69 MFLOPS ∼9% +9%
Single Thread (sort by value)
Trekstor WinPhone 4.7 HD
Adreno 302, 200 MSM8212, 8 GB eMMC Flash
59.569 MFLOPS ∼6%
Honor Holly
Mali-400 MP2, MT6582, 16 GB eMMC Flash
114.21 MFLOPS ∼11% +92%
Motorola Moto E 2. Gen 2015
Adreno 306, 410 MSM8916, 8 GB eMMC Flash
105.584 MFLOPS ∼10% +77%
Sony Xperia M2 Aqua
Adreno 305, 400 MSM8926, 8 GB eMMC Flash
85.11 MFLOPS ∼8% +43%
BaseMark OS II
Web (sort by value)
Trekstor WinPhone 4.7 HD
Adreno 302, 200 MSM8212, 8 GB eMMC Flash
373 Points ∼18%
Honor Holly
Mali-400 MP2, MT6582, 16 GB eMMC Flash
507 Points ∼25% +36%
Motorola Moto E 2. Gen 2015
Adreno 306, 410 MSM8916, 8 GB eMMC Flash
580 Points ∼29% +55%
Sony Xperia M2 Aqua
Adreno 305, 400 MSM8926, 8 GB eMMC Flash
609 Points ∼30% +63%
Nokia Lumia 630
Adreno 305, 400 MSM8226
590 Points ∼29% +58%
Graphics (sort by value)
Trekstor WinPhone 4.7 HD
Adreno 302, 200 MSM8212, 8 GB eMMC Flash
168 Points ∼1%
Honor Holly
Mali-400 MP2, MT6582, 16 GB eMMC Flash
137 Points ∼0% -18%
Motorola Moto E 2. Gen 2015
Adreno 306, 410 MSM8916, 8 GB eMMC Flash
312 Points ∼1% +86%
Sony Xperia M2 Aqua
Adreno 305, 400 MSM8926, 8 GB eMMC Flash
421 Points ∼1% +151%
Nokia Lumia 630
Adreno 305, 400 MSM8226
209 Points ∼1% +24%
Memory (sort by value)
Trekstor WinPhone 4.7 HD
Adreno 302, 200 MSM8212, 8 GB eMMC Flash
635 Points ∼8%
Honor Holly
Mali-400 MP2, MT6582, 16 GB eMMC Flash
232 Points ∼3% -63%
Motorola Moto E 2. Gen 2015
Adreno 306, 410 MSM8916, 8 GB eMMC Flash
369 Points ∼5% -42%
Sony Xperia M2 Aqua
Adreno 305, 400 MSM8926, 8 GB eMMC Flash
284 Points ∼4% -55%
Nokia Lumia 630
Adreno 305, 400 MSM8226
662 Points ∼9% +4%
System (sort by value)
Trekstor WinPhone 4.7 HD
Adreno 302, 200 MSM8212, 8 GB eMMC Flash
621 Points ∼4%
Honor Holly
Mali-400 MP2, MT6582, 16 GB eMMC Flash
983 Points ∼6% +58%
Motorola Moto E 2. Gen 2015
Adreno 306, 410 MSM8916, 8 GB eMMC Flash
1053 Points ∼6% +70%
Sony Xperia M2 Aqua
Adreno 305, 400 MSM8926, 8 GB eMMC Flash
717 Points ∼4% +15%
Nokia Lumia 630
Adreno 305, 400 MSM8226
449 Points ∼3% -28%
Overall (sort by value)
Trekstor WinPhone 4.7 HD
Adreno 302, 200 MSM8212, 8 GB eMMC Flash
369 Points ∼4%
Honor Holly
Mali-400 MP2, MT6582, 16 GB eMMC Flash
355 Points ∼4% -4%
Motorola Moto E 2. Gen 2015
Adreno 306, 410 MSM8916, 8 GB eMMC Flash
515 Points ∼6% +40%
Sony Xperia M2 Aqua
Adreno 305, 400 MSM8926, 8 GB eMMC Flash
478 Points ∼6% +30%
Nokia Lumia 630
Adreno 305, 400 MSM8226
438 Points ∼5% +19%
GFXBench (DX / GLBenchmark) 2.7
1920x1080 T-Rex HD Offscreen C24Z16 (sort by value)
Honor Holly
Mali-400 MP2, MT6582, 16 GB eMMC Flash
4.2 fps ∼0%
Motorola Moto E 2. Gen 2015
Adreno 306, 410 MSM8916, 8 GB eMMC Flash
5.3 fps ∼0%
Sony Xperia M2 Aqua
Adreno 305, 400 MSM8926, 8 GB eMMC Flash
5.9 fps ∼0%
T-Rex HD Onscreen C24Z16 (sort by value)
Honor Holly
Mali-400 MP2, MT6582, 16 GB eMMC Flash
7 fps ∼0%
Motorola Moto E 2. Gen 2015
Adreno 306, 410 MSM8916, 8 GB eMMC Flash
12 fps ∼0%
Sony Xperia M2 Aqua
Adreno 305, 400 MSM8926, 8 GB eMMC Flash
15.4 fps ∼0%
Sunspider - 1.0 Total Score (sort by value)
Trekstor WinPhone 4.7 HD
Adreno 302, 200 MSM8212, 8 GB eMMC Flash
1406.9 ms * ∼15%
Honor Holly
Mali-400 MP2, MT6582, 16 GB eMMC Flash
1361.1 ms * ∼15% +3%
Motorola Moto E 2. Gen 2015
Adreno 306, 410 MSM8916, 8 GB eMMC Flash
1305.4 ms * ∼14% +7%
Sony Xperia M2 Aqua
Adreno 305, 400 MSM8926, 8 GB eMMC Flash
1710.2 ms * ∼19% -22%
Nokia Lumia 630
Adreno 305, 400 MSM8226, 8 GB eMMC Flash
1412 ms * ∼15% -0%
Nokia Lumia 630
Adreno 305, 400 MSM8226
2244 ms * ∼25% -59%
Octane V2 - Total Score (sort by value)
Trekstor WinPhone 4.7 HD
Adreno 302, 200 MSM8212, 8 GB eMMC Flash
1122 Points ∼2%
Honor Holly
Mali-400 MP2, MT6582, 16 GB eMMC Flash
2020 Points ∼4% +80%
Motorola Moto E 2. Gen 2015
Adreno 306, 410 MSM8916, 8 GB eMMC Flash
2804 Points ∼5% +150%
Sony Xperia M2 Aqua
Adreno 305, 400 MSM8926, 8 GB eMMC Flash
2183 Points ∼4% +95%
Nokia Lumia 630
Adreno 305, 400 MSM8226, 8 GB eMMC Flash
1085 Points ∼2% -3%
Nokia Lumia 630
Adreno 305, 400 MSM8226
1713 Points ∼3% +53%
Mozilla Kraken 1.1 - Total Score (sort by value)
Trekstor WinPhone 4.7 HD
Adreno 302, 200 MSM8212, 8 GB eMMC Flash
30715.7 ms * ∼52%
Honor Holly
Mali-400 MP2, MT6582, 16 GB eMMC Flash
15354.5 ms * ∼26% +50%
Motorola Moto E 2. Gen 2015
Adreno 306, 410 MSM8916, 8 GB eMMC Flash
14002.3 ms * ∼24% +54%
Sony Xperia M2 Aqua
Adreno 305, 400 MSM8926, 8 GB eMMC Flash
16154.6 ms * ∼27% +47%
Nokia Lumia 630
Adreno 305, 400 MSM8226, 8 GB eMMC Flash
25790 ms * ∼43% +16%
Nokia Lumia 630
Adreno 305, 400 MSM8226
19928 ms * ∼34% +35%
WebXPRT 2013
Offline Notes (sort by value)
Trekstor WinPhone 4.7 HD
Adreno 302, 200 MSM8212, 8 GB eMMC Flash
3171 ms * ∼66%
Honor Holly
Mali-400 MP2, MT6582, 16 GB eMMC Flash
1991.7 ms * ∼42% +37%
Motorola Moto E 2. Gen 2015
Adreno 306, 410 MSM8916, 8 GB eMMC Flash
2041 ms * ∼43% +36%
Sony Xperia M2 Aqua
Adreno 305, 400 MSM8926, 8 GB eMMC Flash
2667.7 ms * ∼56% +16%
Nokia Lumia 630
Adreno 305, 400 MSM8226, 8 GB eMMC Flash
2738 ms * ∼57% +14%
Stocks Dashboard (sort by value)
Trekstor WinPhone 4.7 HD
Adreno 302, 200 MSM8212, 8 GB eMMC Flash
2851 ms * ∼76%
Honor Holly
Mali-400 MP2, MT6582, 16 GB eMMC Flash
2050.4 ms * ∼55% +28%
Motorola Moto E 2. Gen 2015
Adreno 306, 410 MSM8916, 8 GB eMMC Flash
2138.6 ms * ∼57% +25%
Sony Xperia M2 Aqua
Adreno 305, 400 MSM8926, 8 GB eMMC Flash
2691 ms * ∼72% +6%
Nokia Lumia 630
Adreno 305, 400 MSM8226, 8 GB eMMC Flash
2429 ms * ∼65% +15%
Face Detection (sort by value)
Trekstor WinPhone 4.7 HD
Adreno 302, 200 MSM8212, 8 GB eMMC Flash
6810 ms * ∼56%
Honor Holly
Mali-400 MP2, MT6582, 16 GB eMMC Flash
4175.2 ms * ∼34% +39%
Motorola Moto E 2. Gen 2015
Adreno 306, 410 MSM8916, 8 GB eMMC Flash
2282.3 ms * ∼19% +66%
Sony Xperia M2 Aqua
Adreno 305, 400 MSM8926, 8 GB eMMC Flash
3237.8 ms * ∼27% +52%
Nokia Lumia 630
Adreno 305, 400 MSM8226, 8 GB eMMC Flash
5885 ms * ∼49% +14%
Photo Effects (sort by value)
Trekstor WinPhone 4.7 HD
Adreno 302, 200 MSM8212, 8 GB eMMC Flash
2464.4 ms * ∼28%
Honor Holly
Mali-400 MP2, MT6582, 16 GB eMMC Flash
1638.4 ms * ∼18% +34%
Motorola Moto E 2. Gen 2015
Adreno 306, 410 MSM8916, 8 GB eMMC Flash
1005 ms * ∼11% +59%
Sony Xperia M2 Aqua
Adreno 305, 400 MSM8926, 8 GB eMMC Flash
1450.6 ms * ∼16% +41%
Nokia Lumia 630
Adreno 305, 400 MSM8226, 8 GB eMMC Flash
2075 ms * ∼23% +16%
Overall Score (sort by value)
Trekstor WinPhone 4.7 HD
Adreno 302, 200 MSM8212, 8 GB eMMC Flash
118 Points ∼5%
Honor Holly
Mali-400 MP2, MT6582, 16 GB eMMC Flash
181 Points ∼8% +53%
Motorola Moto E 2. Gen 2015
Adreno 306, 410 MSM8916, 8 GB eMMC Flash
233 Points ∼10% +97%
Sony Xperia M2 Aqua
Adreno 305, 400 MSM8926, 8 GB eMMC Flash
172 Points ∼8% +46%
Nokia Lumia 630
Adreno 305, 400 MSM8226, 8 GB eMMC Flash
138 Points ∼6% +17%

* ... smaller is better

Games

Gaming is not optimal on the TrekStor WinPhone 4.7 HD. The integrated Adreno 302 offers good performance for occasional gaming but demanding Apps will force stutters, especially considering the high resolution. It is not possible to run those games at maximum settings.

The sensors are not perfect, which means games like Asphalt 8 cannot be controlled smoothly.

Asphalt 8
Asphalt 8
Solitaire
Solitaire

Emissions

Temperature

When idle, the surface temperatures of the TrekStor WinPhone 4.7 HD are very low, reaching a maximum of 28.6 °C (83.48 °F). At constant load, the temperatures rise up to 36.4 °C (97.52 °F). The smartphone gets just lukewarm - a weak SoC has its advantages.

Max. Load
 36.4 °C
98 F
36.3 °C
97 F
31 °C
88 F
 
 36.4 °C
98 F
35.3 °C
96 F
31.3 °C
88 F
 
 34.7 °C
94 F
33.9 °C
93 F
29.6 °C
85 F
 
Maximum: 36.4 °C = 98 F
Average: 33.9 °C = 93 F
31 °C
88 F
31.5 °C
89 F
36.3 °C
97 F
30.8 °C
87 F
31.7 °C
89 F
36.1 °C
97 F
30.4 °C
87 F
31.5 °C
89 F
34.8 °C
95 F
Maximum: 36.3 °C = 97 F
Average: 32.7 °C = 91 F
Power Supply (max.)  32.5 °C = 91 F | Room Temperature 21.1 °C = 70 F | Voltcraft IR-260
(±) The average temperature for the upper side under maximal load is 33.9 °C / 93 F, compared to the average of 33.1 °C / 92 F for the devices in the class Smartphone.
(+) The maximum temperature on the upper side is 36.4 °C / 98 F, compared to the average of 35.5 °C / 96 F, ranging from 22.4 to 51.7 °C for the class Smartphone.
(+) The bottom heats up to a maximum of 36.3 °C / 97 F, compared to the average of 34 °C / 93 F
(+) In idle usage, the average temperature for the upper side is 27.7 °C / 82 F, compared to the device average of 33.1 °C / 92 F.

Speakers

The mono speaker on the back of the device has poor sound quality. For the occasional video, the sound quality suffices, but we do not recommend watching long movies or trying to enjoy music on the smartphone. The sound is muffled even at low levels and suffers from distortions. The audio jack does a good job and can be used to enjoy media.

Energy Management

Power Consumption

The TrekStor WinPhone 4.7 HD has relatively high consumption while in standby and when idle. In contrast, at load, the device is quite conservative.

Power Consumption
Off / Standbydarklight 0 / 0.2 Watt
Idledarkmidlight 1.1 / 1.5 / 1.9 Watt
Load midlight 2.9 / 3.8 Watt
 color bar
Key: min: dark, med: mid, max: light        Voltcraft VC 870

Battery Life

The battery of the WinPhone 4.7 HD has a capacity of 1,750 mAh. We were anxious to find out how the relatively high power consumption would affect the run times of the device.

In the WLAN test, the brightness is set to around 150 cd/m², which is a problem with our model as it only has three brightness levels. We needed to use the lowest setting (139 cd/m²) to get close to our test value. In our test, the power saver settings were turned on and all modules were turned off, except for WLAN. During the test, our script loads a new website every 30 seconds. The device runs about 5 hours, which is quite good, but if you intensively use the smartphone, the battery will not last an entire workday.

Battery Runtime
NBC WiFi Websurfing Battery Test 1.3
5h 11min
Trekstor WinPhone 4.7 HD
Adreno 302, 200 MSM8212, 8 GB eMMC Flash
Honor Holly
Mali-400 MP2, MT6582, 16 GB eMMC Flash
Motorola Moto E 2. Gen 2015
Adreno 306, 410 MSM8916, 8 GB eMMC Flash
Sony Xperia M2
Adreno 305, 400 MSM8926, 8 GB SSD
Nokia Lumia 630
Adreno 305, 400 MSM8226, 8 GB eMMC Flash
Battery Runtime
63%
WiFi v1.3
311
506
63%
WiFi
363
686
874

Pros

+ Not even 100 grams heavy
+ HD display
+ Removable battery
+ Dual SIM
+ Memory can be increased
+ Additional cover included in delivery

Cons

- Low frequency coverage
- High black value
- Videos only in 480p
- Poor speakers
- Modest run times

Verdict

In Review: TrekStor WinPhone 4.7 HD. Test model provided by notebooksbilliger.de
In Review: TrekStor WinPhone 4.7 HD. Test model provided by notebooksbilliger.de

TrekStor offers its first Windows smartphone: the WinPhone 4.7 HD. This slim device boasts a bright display with a high resolution and decent cameras. Once you pick the device up, you will be surprised at how light it is.

The battery life can be improved and hopefully an update will alleviate this flaw. An update to Windows 10 has been announced. We found the limited supported frequencies of the smartphone to be disappointing but if you use the WinPhone as a messenger, you should be fine.

Cheap, ultra-light Windows smartphone with an HD display.

The poor speaker, while the norm for this price class, is annoying for users. Thankfully, it is loud. Overall, the TrekStor device offers a good package for its price and includes two additional back covers.

Trekstor WinPhone 4.7 HD - 04/12/2015 v4(old)
Daniel Schmidt

Chassis
71%
Keyboard
65 / 75 → 87%
Pointing Device
83%
Connectivity
40 / 60 → 67%
Weight
97%
Battery
88%
Display
79%
Games Performance
45 / 63 → 71%
Application Performance
17 / 70 → 24%
Temperature
91%
Noise
100%
Audio
44 / 91 → 48%
Camera
62%
Average
68%
79%
Smartphone - Weighted Average

Pricecompare

static version load dynamic
Loading Comments
Comment on this article
Please share our article, every link counts!
> Notebook / Laptop Reviews and News > Reviews > Archive of our own reviews > TrekStor WinPhone 4.7 HD Smartphone Review
Daniel Schmidt, 2015-04-22 (Update: 2018-05-15)