Notebookcheck

Lenovo K6 Smartphone Review

Manuel Masiero, Tanja Hinum (translated by Bernie Pechlaner), 02/06/2017

Price cutter. Lenovo's K6 5-inch middle-class smartphone sells for less than 200 Euro (~$215), but its robust hardware features put it in a category normally reserved for much pricier competitors.

For the original German review, see here.

Very decent hardware and a low price - Lenovo has compelling arguments to steer smartphone buyers towards their middle-class K6 smartphone. The official retail price is 199 Euro (~$215), but we've managed to find the smartphone for less than 180 Euro (~$195) elsewhere. For the given price point, the 5-inch smartphone has a lot of features: a Full-HD display, a 13 MP camera, dual-SIM functionality, Dolby Atmos stereo sound as well as a 3000 mAh battery. Also on board: a fingerprint reader, which is a rarity in this class. The phone is powered by a middle-class Qualcomm Snapdragon 430 SoC and comes equipped with 2 GB RAM, 16 GB of flash storage, and an integrated Qualcomm Adreno 505 GPU. The K6 ships with Android 6.0 Marshmallow - a fairly current version of the Google OS.

Lenovo offers two other K6 models, which are also equipped with a Snapdragon 430 SoC and features like LTE, dual-SIM, and a fingerprint reader. The K6 Power is almost identical to the review smartphone, save for its larger 4000 mAh battery. The other version - called K6 Note - is a little different, as it comes with a larger 5.5-inch display, up to 3 GB of RAM and up to 32 GB of flash storage. The main camera features a higher pixel count (16 MP) and at 4000 mAh, the battery is beefier as well.

For our review, we'll compare the K6 to similarly-equipped smartphones like the  Acer Liquid Z630S, the Honor 5X, the LG K10, the Samsung Galaxy J5 (2016), and the Wiko U Feel Prime

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Lenovo K6 (Vibe Series)
Graphics adapter
Memory
2048 MB 
Display
5 inch 16:9, 1920 x 1080 pixel 441 PPI, IPS, glossy: yes
Storage
16 GB eMMC Flash, 16 GB 
, 9.4 GB free
Connections
1 USB 2.0, Audio Connections: 3.5 mm headphone jack, Card Reader: MicroSD up to 128 GB, 1 Fingerprint Reader, Brightness Sensor, Sensors: acceleration sensor, proximity sensor, ambient light, gyroscope, WiFi hotspot, Wifi Direct, USB OTG
Networking
802.11 b/g/n (b/g/n = Wi-Fi 4), Bluetooth 4.1, GSM (850, 900, 1800, 1900 MHz), UMTS (850, 900, 1900, 2100 MHz), LTE Cat. 4 (800, 850, 900, 1800, 2100, 2300, 2500, 2600 MHz), download speed up to 150 MBit/s, uploads up to 50 MBit/s, Nano-SIM, head SAR 0.618 W/kg, body SAR 1.167 W/kg, Dual SIM, LTE, GPS
Size
height x width x depth (in mm): 8.2 x 141.9 x 70.3 ( = 0.32 x 5.59 x 2.77 in)
Battery
3000 mAh Lithium-Polymer
Operating System
Android 6.0 Marshmallow
Camera
Primary Camera: 13 MPix LED flash, FHD video
Secondary Camera: 8 MPix fixed focal length
Additional features
Speakers: stereo speakers, Keyboard: virtual, Keyboard Light: yes, USB cable, modular power adapter, quickstart guide, SIM tool, Google-Apps, Dolby Atmos App, Lenovo Companion, diverse Drittanbieter-Apps wie McAfee Security, ShareIt, SyncIt, 24 Months Warranty, fanless
Weight
140 g ( = 4.94 oz / 0.31 pounds), Power Supply: 35 g ( = 1.23 oz / 0.08 pounds)
Price
199 Euro
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

Case

Although it might not appear that way at first - the surprisingly low weight of 140 g contributes to this impression as well - the smartphone features metal unibody design, which is available in either dark-gray, gold, or silver (our review unit). Thanks to the rounded corners and edges, close-to-unnoticeable gaps and solidly integrated physical buttons, the case is impressive from both a design standpoint as well as haptic feedback is concerned. The metal chassis is very sturdy and the K6 resisted flexing even during our more vigorous twisting attempts without any creaking sounds. The display itself also remained completely unaffected.

At 8.2 mm, the phone is one of the slimmest ones in our comparison. The Honor 5X and the Wiko U Feel Prime are about as thick; the Samsung Galaxy J5 (2016) is a smidgen thinner at 8.1 mm. The fingerprint reader in the middle on the back is slightly recessed, which makes it easy to locate by feel. The location of the Micro-USB port up top is slightly unusual and the bottom edge only contains the microphone. The location of the stereo speakers seems less convincing, as they are on the back, resulting in muffled sound when the smartphone is placed on a table. Thanks to the Dolby Atmos surround sound technology, it doesn't matter that both speakers are located on one side: when holding the K6 in landscape mode, the sound nonetheless seems to be coming from both sides.

Size Comparison

156.3 mm / 6.15 inch 77.5 mm / 3.05 inch 8.9 mm / 0.3504 inch 156.3 g0.3446 lbs151.3 mm / 5.96 inch 76.3 mm / 3 inch 8.2 mm / 0.3228 inch 158 g0.3483 lbs146.6 mm / 5.77 inch 74.8 mm / 2.94 inch 8.8 mm / 0.3465 inch 140 g0.3086 lbs145.8 mm / 5.74 inch 72.3 mm / 2.85 inch 8.1 mm / 0.3189 inch 159 g0.3505 lbs142.5 mm / 5.61 inch 69.9 mm / 2.75 inch 8.7 mm / 0.3425 inch 150 g0.3307 lbs141.9 mm / 5.59 inch 70.3 mm / 2.77 inch 8.2 mm / 0.3228 inch 140 g0.3086 lbs

Connectivity

The K6 comes equipped with 2 GB of RAM and the middle-class Qualcomm Snapdragon 430 SoC and is capable of very decent performance. The smartphone might not be speed demon, but it offers enough performance to run current applications. The same is true for the octo-core SoC integrated Qualcomm Adreno 505, although the GPU gets pushed to its limits much sooner when playing current games. 

The flash storage drive has a capacity of 16 GB, but the Android OS and the preinstalled apps take up about 6.6 GB, so only 9.4 GB are available to the user. A microSD card (capacity up to 128 GB) can augment the storage, but that means that the smartphone won't support dual SIM cards any longer, as the K6 can either house two nano-SIM cards or one nano-SIM and one microSD card. USB-OTG is supported, so external storage devices can be connected if so desired. NFC is not available.

Left: nano-SIM / microSD slot
Left: nano-SIM / microSD slot
Right: volume rocker switch, power button
Right: volume rocker switch, power button
Top: headphone jack, Micro-USB 2.0
Top: headphone jack, Micro-USB 2.0
Bottom: microphone
Bottom: microphone

Software

Compared to many other manufacturers, Lenovo decided to refrain from extensive OS modifications. Android 6.0 is almost completely standard aside from additional software titles. Fortunately, Lenovo didn't add too many additional applications. Included are third-party apps like Google's standard software (Gmail, Maps, YouTube, Drive, Photos, etc) and McAfee Mobile Security. Also part of the package are some of Leonovo's own apps like ShareIt (for sharing multimedia), SyncIt (backup and restore), and Theme Center (customization of the appearance). Aside from the Google apps, most titles can be uninstalled if they're not needed or the storage is running out.

Communication and GPS

The Lenovo K6 supports GSM and UMTS quadband and the bands 1, 3, 5, 7, 8, 20, 38, 40 and 41, thus covering all important European LTE frequencies. Downloads are possible at up to 150 Mb/s, uploads at up to 50 Mb/s (LTE Cat.4). During our test, the connection quality was very good.

The smartphone is equipped with Bluetooth 4.1 and a 802.11b/g/n WLAN module, which means that only the 2.4 GHz band is supported. The WLAN speed is quite decent considering the technical limitations - we recorded about 52 MBit/s for both send and receive when connected to our  AVM modem Fritzbox 6490 Cable. We should note though that smartphones offering 802.11ac support are up to 5-6 times faster. The Wiko U Feel Prime, which also only supports 2.4 GHz, is minimally faster than the review smartphone.

Networking
iperf3 Client (receive) TCP 1 m 4M x10
Wiko U Feel Prime
Adreno 505, 430, 32 GB eMMC Flash
55.4 MBit/s ∼100% +7%
Lenovo K6
Adreno 505, 430, 16 GB eMMC Flash
51.9 MBit/s ∼94%
iperf3 Client (transmit) TCP 1 m 4M x10
Wiko U Feel Prime
Adreno 505, 430, 32 GB eMMC Flash
53.2 MBit/s ∼100% +2%
Lenovo K6
Adreno 505, 430, 16 GB eMMC Flash
52.4 MBit/s ∼98%
GPS reception outdoors
GPS reception outdoors
GPS reception inside
GPS reception inside

The GPS module was able to pinpoint our position with an accuracy of just a few meters, no matter if we stayed indoors or ventured outside. This positive first impression was hampered a bit when we conducted our bicycle test - but in this test, the smartphone has to compete with the professional navigation GPS Garmin Edge 500. The K6 shortens the traveled distance quite noticeably at times and - depending on the topography - claimed we took shortcuts through ground cover or front yards. These abnormalities weren't that common, however, so in the end we recorded a difference of about 380 m (0.24 miles). For normal application usage, the K6 is certainly accurate enough.

Lenovo K6: entire course
Lenovo K6: entire course
Lenovo K6: bridge
Lenovo K6: bridge
Lenovo K6: forest
Lenovo K6: forest
Garmin Edge 500: entire course
Garmin Edge 500: entire course
Garmin Edge 500: bridge
Garmin Edge 500: bridge
Garmin Edge 500: forest
Garmin Edge 500: forest

Telephone and Voice Quality

The overall voice quality is pretty decent. When we placed calls to other cellphones but also to landline phones, we could understand our conversation partner quite well, even though we noticed a little bit of background noise. When using the speakerphone, voices sound more muffled, but this doesn't affect communication at all. The only caveat: at maximum volume settings, the speakerphone can sound distorted. Leonovo uses Google's standard Android telephone application.

Cameras

Photo - main camera (click for original)
Photo - main camera (click for original)

The main camera is equipped with an LED flash and supports a resolution of 13 MP. The focal length is 3.59 mm; the resulting pictures measure up to 4160 x 2340 pixels when an aspect ratio of 16:9 is selected; the maximum resolution of 4160 x 3120 is only available at a the 4:3 aspect ratio. Videos can be recorded in Full-HD with up to 30 frames per second. The webcam (focal length 3.15 mm) nominally supports 8 MP, but in "Ultra HD", photos only measure 3264 x 1836 pixels - so the effective size is 6 MP. For selfies, this resolution is still more than sufficient.

The camera menu is well structured and allows the user to select various modi like panorama, night mode, HDR, slow motion, and time lapse. Some camera parameters - like white balance and ISO sensitivity - can be adjusted as well. For selfies, the user can use fill light and snap the picture using the timer, tapping the screen, or via a gesture. A seven-step soft focus filter can be used to improve the results.

The K6 impresses with a decent dynamic range and a good amount of details even in darker areas. The colors are a tad too vivid, however, so some photos appear to be overly saturated. The result doesn't look bad at all, it's just not very realistic. Occasional photographers and selfie-enthusiasts are likely going to be satisfied with the two cameras.

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

We've also checked the performance of the main camera under controlled lighting conditions. The captured photos have not been processed in any way. As mentioned early, the Lenovo K6 doesn't have a very soft touch when it comes to saturation, but it still quite frequently manages to reproduce the original colors quit3 accurately. Our test chart also makes it easy to check the sharpness. The K6 doesn't do well here: edges are frayed and diagonal elements suffer from quite visible stair-like lines.

Photo of the ColorChecker-chart. The lower half of each patch shows the original color.
Photo of the ColorChecker-chart. The lower half of each patch shows the original color.
Crop of the test picture
Crop of the test picture
Test picture (click to see the original)
Test picture (click to see the original)

Accessories and Warranty

The K6 comes with a USB cable, a modular power adapter, a tool to open the SIM and microSD card slots, a quickstart guide, and a pamphlet with warranty information. Lenovo doesn't offer any special accessories on their website.  

In Germany, the Lenovo K6 is protected against manufacturer defects for a period of 24 months. Please see our Guarantees, Return Policies & Warranties FAQ for country-specific information.

Input and Operation

The IPS display recognizes up to 10 fingers simultaneously. During the review period, the touchscreen translated our commands quickly and precisely. We also quite like the physical buttons. The fingerprint reader works reliably and the volume rocker switch as well as the power button provide clear feedback. Both buttons wiggle slightly, but the side-to-side movement is very minor and certainly not a deal breaker. Lenovo uses Google's virtual keyboard "Gboard", which supports swiping as well as voice commands.

Keyboard portrait mode
Keyboard portrait mode
Keyboard landscape mode
Keyboard landscape mode

Display

Subpixel array
Subpixel array

The 5-inch IPS display features a resolution of 1920 x 1080 pixels and a pixel density of 441 ppi. Individual pixels are thus only visible when using a magnifying glass.

The display is evenly illuminated and - at 460.8 cd/m² (white display background) - bright enough even for very bright environments. Adaptive brightness is turned on by default and ensures that the brightness is reduced automatically in darker environments. Even when switching to a more realistic test method with evenly distributed light and dark segments (APL50), we still measured 455 cd/m² in the middle of the display. The black value of 0.38 cd/m² results in a contrast ratio of 1237:1, which guarantees vivid colors.

447
cd/m²
456
cd/m²
489
cd/m²
432
cd/m²
470
cd/m²
478
cd/m²
432
cd/m²
468
cd/m²
475
cd/m²
Distribution of brightness
X-Rite i1Pro 2
Maximum: 489 cd/m² Average: 460.8 cd/m² Minimum: 5.68 cd/m²
Brightness Distribution: 88 %
Center on Battery: 470 cd/m²
Contrast: 1237:1 (Black: 0.38 cd/m²)
ΔE Color 5.2 | 0.6-29.43 Ø6
ΔE Greyscale 5.6 | 0.64-98 Ø6.2
94% sRGB (Calman 2D)
Gamma: 2.24
Lenovo K6
IPS, 1920x1080, 5
Samsung Galaxy J5 2016
AMOLED, 1280x720, 5.2
Honor 5X
IPS, 1920x1080, 5.5
Acer Liquid Z630S
IPS, 1280x720, 5.5
LG K10
IPS, 1280x720, 5.3
Wiko U Feel Prime
IPS, 1920x1080, 5
Screen
2%
4%
-0%
-20%
6%
Brightness middle
470
289
-39%
535
14%
350
-26%
370
-21%
411
-13%
Brightness
461
291
-37%
521
13%
345
-25%
355
-23%
386
-16%
Brightness Distribution
88
96
9%
85
-3%
84
-5%
92
5%
86
-2%
Black Level *
0.38
0.43
-13%
0.27
29%
0.28
26%
0.36
5%
Contrast
1237
1244
1%
1296
5%
1321
7%
1142
-8%
Colorchecker DeltaE2000 *
5.2
4.7
10%
4.88
6%
4.7
10%
6.7
-29%
4.3
17%
Colorchecker DeltaE2000 max. *
9.5
7.3
23%
8.66
9%
8.5
11%
17.8
-87%
7.9
17%
Greyscale DeltaE2000 *
5.6
3
46%
5.2
7%
5.6
-0%
7.9
-41%
2.8
50%
Gamma
2.24 98%
2.03 108%
2.26 97%
1.84 120%
2.21 100%
2.53 87%
CCT
7924 82%
6291 103%
7766 84%
6795 96%
9072 72%
6589 99%

* ... smaller is better

Color mode
Color mode

The display settings allow the user to select between two different modes. "Normal" is supposed to guarantee realistic colors, while "intensive" leads to more saturated colors. The difference between the two modes is quite visible.

Our analysis with a spectrophotometer and the CalMAN software shows that the K6 does pretty well in either mode: the DeltaE deviations of about 5 for both colors and grayscale only slightly exceeds the target value (DelataE < 3). Considering this is a smartphone display, we also deem the color temperature - which is a bit too high in "normal" mode at 7924K - as still acceptable. The "intensive" mode is somewhat better at 7510K, which is closer to ideal value of 6500K.

ColorChecker (normal mode)
ColorChecker (normal mode)
ColorChecker (intensive mode)
ColorChecker (intensive mode)
Colorspace (normal mode)
Colorspace (normal mode)
Colorspace (intensive mode)
Colorspace (intensive mode)
Graylevels (normal mode)
Graylevels (normal mode)
Graylevels (intensive mode)
Graylevels (intensive mode)
Saturation (normal mode)
Saturation (normal mode)
Saturation (intensive mode)
Saturation (intensive mode)

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: 51 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 9365 (minimum: 43 - maximum: 142900) Hz was measured.

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
34 ms ... rise ↗ and fall ↘ combined↗ 8 ms rise
↘ 26 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers.
In comparison, all tested devices range from 0.8 (minimum) to 240 (maximum) ms. » 88 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (24.9 ms).
       Response Time 50% Grey to 80% Grey
56 ms ... rise ↗ and fall ↘ combined↗ 26 ms rise
↘ 30 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. » 91 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (39.7 ms).

Since the display is quite bright, the K6 is very usable outdoors. As always, it's the reflective display which spoils the good performance a little, as it can make reading the display difficult at times. 

Thanks to the IPS technology, the viewing angle stability is great. Even at very shallow angles, the display remains readable without getting noticeably darker in the process.

Outdoor use
Outdoor use
Viewing angles
Viewing angles

Performance

The Qualcomm Snapdragon 430 SoC is manufactured using a 28nm process and features eight cores running at up to 1.4 GHz. Thanks to 2 GB of RAM and the Qualcomm Adreno 505 GPU, the K6 has enough power to handle current apps and most games. During our review, the K6 reacted quickly to inputs and handled multiple apps at the same time without a hitch. 

The Lenovo K6 does quite well when it comes to system performance and processing power when compared to similarly-equipped smartphones and runs neck-on-neck with the Acer Liquid Z630S, the Honor 5X and the Wiko U Feel Prime.

AnTuTu v6 - Total Score (sort by value)
Lenovo K6
43673 Points ∼15%
Samsung Galaxy J5 2016
27232 Points ∼9% -38%
Honor 5X
37152 Points ∼13% -15%
Acer Liquid Z630S
35585 Points ∼12% -19%
LG K10
27383 Points ∼9% -37%
Wiko U Feel Prime
44420 Points ∼15% +2%
Geekbench 4.0
64 Bit Multi-Core Score (sort by value)
Lenovo K6
1706 Points ∼6%
Wiko U Feel Prime
2085 Points ∼7% +22%
64 Bit Single-Core Score (sort by value)
Lenovo K6
613 Points ∼10%
Wiko U Feel Prime
644 Points ∼11% +5%
3DMark
2560x1440 Sling Shot Extreme (ES 3.1) Physics (sort by value)
Lenovo K6
1047 Points ∼23%
Acer Liquid Z630S
1126 Points ∼25% +8%
LG K10
Points ∼0% -100%
Wiko U Feel Prime
1034 Points ∼23% -1%
2560x1440 Sling Shot Extreme (ES 3.1) Graphics (sort by value)
Lenovo K6
240 Points ∼3%
Acer Liquid Z630S
148 Points ∼2% -38%
LG K10
Points ∼0% -100%
Wiko U Feel Prime
250 Points ∼3% +4%
2560x1440 Sling Shot Extreme (ES 3.1) (sort by value)
Lenovo K6
290 Points ∼5%
Acer Liquid Z630S
183 Points ∼3% -37%
LG K10
Points ∼0% -100%
Wiko U Feel Prime
301 Points ∼5% +4%
2560x1440 Sling Shot OpenGL ES 3.0 Physics (sort by value)
Lenovo K6
1002 Points ∼22%
Samsung Galaxy J5 2016
709 Points ∼16% -29%
Honor 5X
1089 Points ∼24% +9%
Acer Liquid Z630S
1113 Points ∼25% +11%
LG K10
730 Points ∼16% -27%
Wiko U Feel Prime
1118 Points ∼25% +12%
2560x1440 Sling Shot OpenGL ES 3.0 Graphics (sort by value)
Lenovo K6
491 Points ∼4%
Samsung Galaxy J5 2016
42 Points ∼0% -91%
Honor 5X
103 Points ∼1% -79%
Acer Liquid Z630S
229 Points ∼2% -53%
LG K10
41 Points ∼0% -92%
Wiko U Feel Prime
514 Points ∼5% +5%
2560x1440 Sling Shot OpenGL ES 3.0 (sort by value)
Lenovo K6
554 Points ∼7%
Samsung Galaxy J5 2016
53 Points ∼1% -90%
Honor 5X
129 Points ∼2% -77%
Acer Liquid Z630S
278 Points ∼3% -50%
LG K10
52 Points ∼1% -91%
Wiko U Feel Prime
584 Points ∼7% +5%
1280x720 offscreen Ice Storm Unlimited Physics (sort by value)
Lenovo K6
9034 Points ∼10%
Samsung Galaxy J5 2016
9022 Points ∼10% 0%
Honor 5X
8174 Points ∼9% -10%
Acer Liquid Z630S
10508 Points ∼12% +16%
LG K10
9106 Points ∼11% +1%
1280x720 offscreen Ice Storm Unlimited Graphics Score (sort by value)
Lenovo K6
9691 Points ∼2%
Samsung Galaxy J5 2016
3838 Points ∼1% -60%
Honor 5X
7764 Points ∼1% -20%
Acer Liquid Z630S
6250 Points ∼1% -36%
LG K10
3774 Points ∼1% -61%
1280x720 offscreen Ice Storm Unlimited Score (sort by value)
Lenovo K6
9537 Points ∼4%
Samsung Galaxy J5 2016
4400 Points ∼2% -54%
Honor 5X
7852 Points ∼3% -18%
Acer Liquid Z630S
6868 Points ∼3% -28%
LG K10
4339 Points ∼2% -55%
Wiko U Feel Prime
9548 Points ∼4% 0%
GFXBench (DX / GLBenchmark) 2.7
1920x1080 T-Rex HD Offscreen C24Z16 (sort by value)
Lenovo K6
16 fps ∼0%
Samsung Galaxy J5 2016
5.2 fps ∼0% -67%
Honor 5X
14 fps ∼0% -12%
Acer Liquid Z630S
12 fps ∼0% -25%
LG K10
5.2 fps ∼0% -67%
Wiko U Feel Prime
17 fps ∼0% +6%
T-Rex HD Onscreen C24Z16 (sort by value)
Lenovo K6
15 fps ∼0%
Samsung Galaxy J5 2016
9.7 fps ∼0% -35%
Honor 5X
14 fps ∼0% -7%
Acer Liquid Z630S
21 fps ∼1% +40%
LG K10
9.7 fps ∼0% -35%
Wiko U Feel Prime
16 fps ∼0% +7%
GFXBench 3.0
off screen Manhattan Offscreen OGL (sort by value)
Lenovo K6
7.1 fps ∼1%
Samsung Galaxy J5 2016
1.8 fps ∼0% -75%
Honor 5X
5.4 fps ∼1% -24%
Acer Liquid Z630S
4.2 fps ∼1% -41%
LG K10
1.8 fps ∼0% -75%
Wiko U Feel Prime
7.1 fps ∼1% 0%
on screen Manhattan Onscreen OGL (sort by value)
Lenovo K6
7 fps ∼2%
Samsung Galaxy J5 2016
3.8 fps ∼1% -46%
Honor 5X
5.9 fps ∼2% -16%
Acer Liquid Z630S
9 fps ∼2% +29%
LG K10
4.1 fps ∼1% -41%
Wiko U Feel Prime
7.5 fps ∼2% +7%
GFXBench 3.1
off screen Manhattan ES 3.1 Offscreen (sort by value)
Lenovo K6
4.4 fps ∼0%
Samsung Galaxy J5 2016
fps ∼0% -100%
LG K10
fps ∼0% -100%
Wiko U Feel Prime
4.4 fps ∼0% 0%
on screen Manhattan ES 3.1 Onscreen (sort by value)
Lenovo K6
4.4 fps ∼0%
Samsung Galaxy J5 2016
fps ∼0% -100%
LG K10
fps ∼0% -100%
Wiko U Feel Prime
4.8 fps ∼0% +9%
PCMark for Android - Work performance score (sort by value)
Lenovo K6
3387 Points ∼17%
Samsung Galaxy J5 2016
4126 Points ∼21% +22%
Honor 5X
3794 Points ∼19% +12%
Acer Liquid Z630S
3814 Points ∼19% +13%
LG K10
3999 Points ∼20% +18%
Wiko U Feel Prime
3347 Points ∼17% -1%
BaseMark OS II
Web (sort by value)
Lenovo K6
10 Points ∼0%
Samsung Galaxy J5 2016
551 Points ∼27% +5410%
Honor 5X
9 Points ∼0% -10%
Acer Liquid Z630S
627 Points ∼31% +6170%
LG K10
562 Points ∼28% +5520%
Wiko U Feel Prime
10 Points ∼0% 0%
Graphics (sort by value)
Lenovo K6
732 Points ∼3%
Samsung Galaxy J5 2016
312 Points ∼1% -57%
Honor 5X
763 Points ∼3% +4%
Acer Liquid Z630S
416 Points ∼1% -43%
LG K10
310 Points ∼1% -58%
Wiko U Feel Prime
740 Points ∼3% +1%
Memory (sort by value)
Lenovo K6
530 Points ∼7%
Samsung Galaxy J5 2016
643 Points ∼9% +21%
Honor 5X
787 Points ∼10% +48%
Acer Liquid Z630S
540 Points ∼7% +2%
LG K10
453 Points ∼6% -15%
Wiko U Feel Prime
774 Points ∼10% +46%
System (sort by value)
Lenovo K6
1282 Points ∼8%
Samsung Galaxy J5 2016
1060 Points ∼6% -17%
Honor 5X
1378 Points ∼8% +7%
Acer Liquid Z630S
1614 Points ∼10% +26%
LG K10
1050 Points ∼6% -18%
Wiko U Feel Prime
1281 Points ∼8% 0%
Overall (sort by value)
Lenovo K6
263 Points ∼3%
Samsung Galaxy J5 2016
585 Points ∼7% +122%
Honor 5X
297 Points ∼4% +13%
Acer Liquid Z630S
691 Points ∼8% +163%
LG K10
536 Points ∼6% +104%
Wiko U Feel Prime
290 Points ∼3% +10%

Legend

 
Lenovo K6 Qualcomm Snapdragon 430 (MSM8937), Qualcomm Adreno 505, 16 GB eMMC Flash
 
Samsung Galaxy J5 2016 Qualcomm Snapdragon 410 MSM8916, Qualcomm Adreno 306, 16 GB eMMC Flash
 
Honor 5X Qualcomm Snapdragon 616 MSM8939v2, Qualcomm Adreno 405, 16 GB eMMC Flash
 
Acer Liquid Z630S Mediatek MT6753, ARM Mali-T720 MP4, 32 GB eMMC Flash
 
LG K10 Qualcomm Snapdragon 410 MSM8916, Qualcomm Adreno 306, 16 GB eMMC Flash
 
Wiko U Feel Prime Qualcomm Snapdragon 430 (MSM8937), Qualcomm Adreno 505, 32 GB eMMC Flash

The results of browser benchmarks are in line with the results of the synthetic tests. Just like before, the LG K10 and the Samsung Galaxy J5 (2016) perform nearly as well.

Octane V2 - Total Score (sort by value)
Lenovo K6
3438 Points ∼7%
Samsung Galaxy J5 2016
2730 Points ∼5% -21%
Honor 5X
3595 Points ∼7% +5%
Acer Liquid Z630S
2855 Points ∼5% -17%
LG K10
2838 Points ∼5% -17%
Wiko U Feel Prime
3383 Points ∼6% -2%
Mozilla Kraken 1.1 - Total Score (sort by value)
Lenovo K6
10849.6 ms * ∼18%
Samsung Galaxy J5 2016
13046 ms * ∼22% -20%
Honor 5X
12510 ms * ∼21% -15%
Acer Liquid Z630S
12876 ms * ∼22% -19%
LG K10
16638 ms * ∼28% -53%
Wiko U Feel Prime
10826 ms * ∼18% -0%
WebXPRT 2015 - Overall Score (sort by value)
Lenovo K6
42 Points ∼5%
Samsung Galaxy J5 2016
47 Points ∼6% +12%
Honor 5X
65 Points ∼8% +55%
LG K10
47 Points ∼6% +12%
JetStream 1.1 - Total Score (sort by value)
Lenovo K6
21.436 Points ∼6%
Samsung Galaxy J5 2016
16.8 Points ∼5% -22%
Honor 5X
21.92 Points ∼6% +2%
Acer Liquid Z630S
19.028 Points ∼5% -11%
LG K10
17.478 Points ∼5% -18%
Wiko U Feel Prime
21.4 Points ∼6% 0%

* ... smaller is better

Like its competitors, the Lenovo K6 doesn't exactly excel when it comes to writing data, but is one of the faster smartphones when it comes to reads. The microSD card performance is also very good at 78.2 MB/s and 50.4 MB/s, respectively, for sequential reads and writes. Although this doesn't come close to the limits of our Toshiba Exceria Pro M401 reference card (reads up to 95 MB/s, writes up to 80 MB/s), the result is still good enough to beat the competition. The Samsung Galaxy J5 (2016) performs almost as well, however.

Lenovo K6Samsung Galaxy J5 2016Honor 5XAcer Liquid Z630SLG K10Wiko U Feel Prime
AndroBench 3-5
-3%
-8%
-4%
-16%
31%
Sequential Write 256KB SDCard
50.4
46.61
-8%
45
-11%
35.21
-30%
Sequential Read 256KB SDCard
78.2
79.83
2%
75.47
-3%
41.98
-46%
Random Write 4KB
10.5
11.6
10%
10
-5%
5.82
-45%
7.5
-29%
9.4
-10%
Random Read 4KB
32.01
21
-34%
17
-47%
28.43
-11%
9.2
-71%
55
72%
Sequential Write 256KB
46.66
72
54%
78
67%
67.7
45%
78
67%
137.3
194%
Sequential Read 256KB
262.56
147
-44%
144
-45%
249.01
-5%
131
-50%
270.9
3%

Gaming

The Qualcomm Adreno 505 GPU performs well and even handles current Android games, although compromises are necessary at times. The very demanding Asphalt 8: Airborne, for example, didn't exceed 30 fps at any graphics setting. At maximum details and especially when there was lot of action on the race track, we encountered micro-stutters. We had no issues with the (also quite demanding) Dead Trigger 2, which managed silky-smooth frame rates of 53 fps.

Asphalt 8: Airborne
Asphalt 8: Airborne
Dead Trigger 2
Dead Trigger 2
Asphalt 8: Airborne
 SettingsValue
 high27 fps
 very low29 fps
Dead Trigger 2
 SettingsValue
 high53 fps

Emissions

Temperature

After our one-hour stress test, which utilizes both the CPU as well as the GPU to their respective maximums, we measured a temperature of only 35.8 °C. The average temperature on the front and back is only 33.5 °C, which means that the smartphone doesn't even feel warm to the touch. The internal components fare equally well, as we didn't encounter throttling at all. Even when we ran the GFXBench battery test - which renders a gaming sequence 30 times in a row - the K6's performance didn't fluctuate at all.

GFXBench: Performance
GFXBench: Performance
GFXBench: Battery
GFXBench: Battery
GFXBench: Frame Times
GFXBench: Frame Times
Max. Load
 34.5 °C
94 F
32.7 °C
91 F
34.2 °C
94 F
 
 34.1 °C
93 F
33 °C
91 F
35.8 °C
96 F
 
 33 °C
91 F
32.5 °C
91 F
34.7 °C
94 F
 
Maximum: 35.8 °C = 96 F
Average: 33.8 °C = 93 F
31.5 °C
89 F
32.9 °C
91 F
34.1 °C
93 F
32.7 °C
91 F
33.6 °C
92 F
33.9 °C
93 F
32.6 °C
91 F
33.7 °C
93 F
33.8 °C
93 F
Maximum: 34.1 °C = 93 F
Average: 33.2 °C = 92 F
Power Supply (max.)  30.7 °C = 87 F | Room Temperature 20.6 °C = 69 F | Voltcraft IR-350
(±) The average temperature for the upper side under maximal load is 33.8 °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 35.8 °C / 96 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 34.1 °C / 93 F, compared to the average of 34.1 °C / 93 F
(+) In idle usage, the average temperature for the upper side is 28.8 °C / 84 F, compared to the device average of 33.1 °C / 92 F.

Speakers

Dolby's Atmos technology is one of the K6's most interesting features. The surround-sound system controls the two speakers on the back and does indeed produce a more voluminous and multi-layered sound compared to standard speakers. Of course, Dolby Atmos isn't a miracle cure for small speaker diaphragms. The highs are definitely still dominant; the mids are less noticeable and hearing the lows needs a bit of imagination. The Dolby Atmos app, which comes preinstalled, has different equalizer settings for movies, music, games, and voice. Users who want to tweak the sound themselves can modify the two user presets.

dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2028.227.428.22525.627.925.63124.125.224.14025.728.725.75024.726.424.76323.622.923.68024.623.624.610025.224.325.212534.325.134.316040.319.740.320047.818.647.825050.519.750.53155219.95240049.918.949.950049.818.949.863054.819.854.880063.220.863.2100071.317.271.3125072.617.172.6160074.414.474.4200073.413.973.4250071.913.271.9315070.212.970.2400067.51367.5500068.412.868.4630073.812.773.8800075.712.775.71000072.512.872.51250069.112.869.11600059.913.159.9SPL83.62883.6N53.6153.6median 67.5median 17.1median 67.5Delta11.33.811.337.727.732.437.722.330.631.322.326.529.131.726.52931.4262932.337.239.432.32927.736.22924.627.628.624.623.223.425.423.228.321.821.328.330.823.223.330.834.52422.534.537.222.922.437.242.126.921.342.147.428.218.447.456.236.117.556.262.641.517.562.670.848.617.270.875.853.716.875.872.450.217.372.470.548.117.470.568.146.716.668.167.245.117.367.268.547.217.668.570.949.417.670.974.953.217.774.976.554.417.476.576.354.717.776.365.242.617.965.251.330.718.151.346.826.118.146.884.162.229.884.156.714.71.356.7median 65.2median 42.6median 17.7median 65.213.911.21.613.931.649.525.441.325.33732.935.433.644.831.641.328.433.12730.120.829.82234.321.334.720.842.421.248.119.452.319.557.617.764.217.96817.871.817.371.117.470.416.769.917.270.118.27317.976.517.679.817.776.817.870.917.966.718.162.518.249.63085.51.359.1median 17.9median 66.71.311.1hearing rangehide median Pink NoiseLenovo K6Samsung Galaxy J5 2016Wiko U Feel Prime
Lenovo K6 audio analysis

(+) | speakers can play relatively loud (83.6 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 25.8% lower than median
(±) | linearity of bass is average (9.1% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | reduced mids - on average 9.3% lower than median
(+) | mids are linear (6.9% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 3.9% away from median
(+) | highs are linear (4.9% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (22.9% difference to median)
Compared to same class
» 37% of all tested devices in this class were better, 12% similar, 51% worse
» The best had a delta of 13%, average was 25%, worst was 44%
Compared to all devices tested
» 61% of all tested devices were better, 8% similar, 31% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Samsung Galaxy J5 2016 audio analysis

(+) | speakers can play relatively loud (84.09 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 32.6% lower than median
(±) | linearity of bass is average (7.1% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 7.6% higher than median
(±) | linearity of mids is average (10.9% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 6.1% higher than median
(+) | highs are linear (6.5% delta to prev. frequency)
Overall 100 - 16.000 Hz
(-) | overall sound is not linear (30.3% difference to median)
Compared to same class
» 83% of all tested devices in this class were better, 7% similar, 10% worse
» The best had a delta of 13%, average was 25%, worst was 44%
Compared to all devices tested
» 89% of all tested devices were better, 4% similar, 7% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Wiko U Feel Prime audio analysis

(+) | speakers can play relatively loud (85.46 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 30.1% lower than median
(±) | linearity of bass is average (7.4% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | reduced mids - on average 5.5% lower than median
(+) | mids are linear (6.6% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 6.7% higher than median
(+) | highs are linear (6.7% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (26.1% difference to median)
Compared to same class
» 62% of all tested devices in this class were better, 9% similar, 29% worse
» The best had a delta of 13%, average was 25%, worst was 44%
Compared to all devices tested
» 77% of all tested devices were better, 5% similar, 18% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Frequenzdiagramm im Vergleich (Checkboxen oben an-/abwählbar!)

Energy Management

Power Consumption

The  Lithium-Polymer is not swappable and has a capacity of 3000 mAh. The low power consumption in conjunction with a larger battery should allow for a decent battery life.

Power Consumption
Off / Standbydarklight 0.09 / 0.11 Watt
Idledarkmidlight 0.65 / 1.65 / 1.67 Watt
Load midlight 3.58 / 5.58 Watt
 color bar
Key: min: dark, med: mid, max: light        Metrahit Energy
Lenovo K6
3000 mAh
Samsung Galaxy J5 2016
3100 mAh
Honor 5X
3000 mAh
Acer Liquid Z630S
4000 mAh
LG K10
2300 mAh
Wiko U Feel Prime
3000 mAh
Power Consumption
21%
-31%
-58%
4%
Idle Minimum *
0.65
0.61
6%
0.87
-34%
1.82
-180%
0.66
-2%
Idle Average *
1.65
1.41
15%
2.08
-26%
2.35
-42%
1.66
-1%
Idle Maximum *
1.67
1.51
10%
2.22
-33%
2.6
-56%
1.76
-5%
Load Average *
3.58
2.56
28%
5.26
-47%
3.69
-3%
2.85
20%
Load Maximum *
5.58
3.1
44%
6.34
-14%
5.98
-7%
5.01
10%

* ... smaller is better

Battery Life

The K6 does indeed deliver on Lenovo's promise as far as the run times are concerned. The K6 ran for almost 12 hours during our WLAN test and we were able to watch Full-HD videos for 10.5 hours. Even a session with multiple movies isnt' much of a challenge for the K6. The Acer Liquid Z630S, the Samsung Galaxy J5 (2016) and the Honor 5X achieve similar run times. The LG K10 and the Wiko U Feel Prime don't last nearly as long.

Battery Runtime
Idle (without WLAN, min brightness)
27h 06min
NBC WiFi Websurfing Battery Test 1.3
11h 55min
Big Buck Bunny H.264 1080p
10h 33min
Load (maximum brightness)
5h 50min
Lenovo K6
3000 mAh
Samsung Galaxy J5 2016
3100 mAh
Honor 5X
3000 mAh
Acer Liquid Z630S
4000 mAh
LG K10
2300 mAh
Wiko U Feel Prime
3000 mAh
Battery Runtime
2%
-27%
-5%
-27%
-22%
Reader / Idle
1626
1599
-2%
1053
-35%
1123
-31%
1254
-23%
H.264
633
658
4%
602
-5%
603
-5%
WiFi v1.3
715
643
-10%
643
-10%
681
-5%
453
-37%
575
-20%
Load
350
402
15%
144
-59%
231
-34%

Pros

+ Full-HD display
+ decent build quality
+ fingerprint sensor
+ dual-SIM card slots
+ LTE
+ good camera
+ bright display
+ Dolby Atmos sound
+ long battery life
+ low price

Cons

- only 16 GB of storage
- only hybrid dual-SIM
- LTE Cat.4 only
- WLAN only supports 2.4 GHz

Verdict

In Review: Lenovo K6. Test model courtesy of Lenovo Germany.
In Review: Lenovo K6. Test model courtesy of Lenovo Germany.

The K6 is a very good middle-class smartphone which offers a lot of value for the money. The 5-inch smartphone features solid build quality and comes equipped with a Full-HD display, LTE, a good 13 MP camera, a fingerprint reader, and dual SIM slots. Dolby Atmos surround sound is also on board and while the K6 doesn't exactly sound like a portable concert hall, it still offers much better sound quality than the run-of-the-mill speakers integrated into most smartphones. Long battery life and the bright display with great viewing angle stability round out the positive attributes.

The Lenovo K6 features hardware normally only reserved for much higher-priced middle-class smartphones.

It shouldn't come at a surprise that a price under 200 Euro (~$215) necessitates at least some compromises as far as the feature set is concerned. Although the Snapdragon 430 performs well, it's more moderate output means that there aren't a lot of reserves built in and the SoC will hit its limit sooner rather than later when it comes to future apps and games. 16 GB isn't a lot of storage, either and likely requires a microSD card for expansion - at least the supported size of up to 128 GB is generous. Unfortunately, expanding the storage this way erases one of the advantages, as dual-SIM functionality is provided by a hybrid dual-slot. The recorded WLAN speed at 50 MBit/s also isn't overly impressive, but still quick considering the technical limitations. 

One word about the operating system: Android 6.0 Marshmallow is a pretty current version of the Google OS, but we don't know yet when and if a possible update to Android 7 is in the cards. There's no official announcement from Lenovo, so we have to rely on Internet rumors, which predict an Android update in the first or second quarter. Users who can't live without Android 7 on their smartphone might consider delaying their purchase a little.

Lenovo K6 - 01/27/2017 v6(old)
Manuel Masiero

Chassis
83%
Keyboard
71 / 75 → 95%
Pointing Device
84%
Connectivity
39 / 60 → 65%
Weight
93%
Battery
93%
Display
86%
Games Performance
19 / 63 → 30%
Application Performance
32 / 70 → 46%
Temperature
92%
Noise
100%
Audio
75 / 91 → 82%
Camera
78%
Average
73%
83%
Smartphone - Weighted Average

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> Notebook / Laptop Reviews and News > Reviews > Lenovo K6 Smartphone Review
Manuel Masiero, 2017-02- 6 (Update: 2019-04-21)
Bernhard Pechlaner
Bernhard Pechlaner - Review Editor
Ended up in the IT sector in the 90s more or less accidentally and have remained in the industry (as a sysadmin) ever since. Always been interested in laptops - first purchase was - if memory serves correctly - a Toshiba Satellite T2115CS with DX4-75 processor, 4 MB of RAM and 350 MB hard disk drive (and Windows 3.1). To this day, laptops appeal to me - much to the chagrin of my wife, who doesn’t seem understand why we need 5-10 of them at any given time ;-).