What do a gasping parcel carrier, a torn pocket and 11,000 mAh have in common? The answer is Oukitel K10, the name of a new creation from the Chinese manufacturer, designed to compete with the best battery-powered smartphones with an outrageously large battery and an 18:9 display. The test should show whether can K10 succeed.

Design and build quality

First of all, Oukitel K10 is definitely the wrong device for delicate hands. More appropriate would probably be the target group “weightlifter” or just “battery freak”. It is very difficult to talk about anything other than the battery, because no matter where you look, K10 simply consists of battery, battery, and more battery.

Oukitel K10 5

Well, 11,000 mAh have to be packed somewhere, right? So the manufacturer decided to go straight to a 6-inch display diagonal, so that the battery monster somehow fits into the plastic. This is more than successful, at least as far as the subjective beauty of the smartphone is concerned. It looks (it is!) unwieldy, and it does not even try to conceal it and lies bulky in the hand. The dimensions are H 160.70 mm x W 78.61 mm x D 14.55 mm.

Oukitel uses a magnesium alloy for the material. A nice feature, but with a total weight of 286g it’s just a drop in the ocean. You do not see much of the magnesium anyway, at most the frame. The rest is made of plastic and leather! For all material-mix lovers, Oukitel has put one more thing on top of it and covered the back with “calfskin from Australia”, according to the advertising promise.

Oukitel K10 1

All in all, the heavyweight is very stable due to its robust appearance. The display is generously framed, so that in a best-case scenario not much can happen to the smartphone in case of a fall. In addition, a “Dragontrail” glass, a competitor to Gorilla Glass, protects against scratches and light bumps.

Volume control and power button are in the usual place, on the right. They are easy to operate and have a nice feedback. The USB port (Type-C) is deeply bordered at the bottom; watch out: only the supplied cable with a long plug fits in here. A headphone connection is not available (yet).

Oukitel K10 2 Oukitel K10 6 Oukitel K10 7

Four camera lenses are located on Oukitel K10. Two can be found at the front top of the display, two are located on the rear together with the fingerprint scanner that is beautifully framed by a coat-of-arms-like structure. The rear side is not removable, so the battery is permanently installed. Face-Unlock is also included and functions surprisingly reliably, albeit not at lightning speed. The UNLOCK is not so easy to bypass, multiple attempts with a picture instead of the “original face” did not work.

Oukitel K10 scope of delivery

Black is beautiful: Oukitel K10 is completely black. Black cardboard, black accessories, and black smartphone. The box contains a lot:

  • Oukitel K10Oukitel K10 9
  • Quick-charger
  • USB Type-C cable
  • SIM ejection tool
  • Screen protector (no tempered glass)
  • USB Type-C to headphone jack adapter
  • USB Type-C to OTG adapter
  • Screen cloth
  • Silicone protective cover (black)

Matching accessories on Aliexpress


Oukitel K10 10

The thick device is also oversized in terms of the display: 6-inches in 18:9 format, Full-HD and a resolution of 2160 x 1080 pixels. This results in a pixel density of 402 PPI, which in practice means as much as: individual pixels cannot be detected, even if you press your nose very close to your mobile phone. There is also no pixel error.


Another positive aspect is that the brightness (679 lux) is high. We measured it with a luxmeter at maximum brightness on a white background. In practice, this means that everything can still be easily read from the display, even in direct sunlight.

OukitelK10 Touchtest

Color representation is strong, but not unnatural. The contrasts are strong, which is also shown by the measurement with a black background image (4 lux, 0 would be perfect). The viewing angle stability is also at a very high level thanks to IPS technology. In the settings, saturation and contrast can be customized.

I do not quite understand why the home button has been omitted with a device of this size. It is controlled via on-screen buttons instead. Considering the enormous usable display length (18:9), however, this is bearable. The screen registers ten touches simultaneously and can, therefore, be operated very precisely, which is simply great.


Streaming the whole Lord of the Rings trilogy without having to charge is not a problem for Oukitel K10. The big battery just won’t die. In standby mode, the smartphone can last for weeks; in daily use, it only gradually runs out of power after three days, even with excessive use. The manufacturer rightly calls the K10 the “endurance king”.

OukitelK10 PCMarkAkku

The PCMark battery proves: K10 plays in a league of its own, over 23 hours in the test are a peak value (battery saving mode off, medium display brightness). Oukitel K8000 only lasts about 19 hours, but has only an 8000 mAh battery and is a whole lot slimmer.

Of course, it is not quite 11,000 mAh that actually arrive in the battery. The meter shows 9800 mAh after one night on a conventional power supply – this is acceptable for a Li-polymer battery of this size and still within the frame, especially considering the deviation of the meter itself. If you plug the smartphone into the included quick charger, K10 will be back to 100% after 2.5 hours, but it will also get quite warm.

Battery lifetime Result Unit: hours

Two modes can be activated in the energy options: “Balanced” and “High Power“. If you want to play the software even more intensively, you can do so using “System Manager“. The practical tool is installed ex-works and offers many (partly automatic) functions. In addition to the battery life functions, you can empty the cache and “freeze” apps in the background for a smoother system and ultimately longer battery life. The long charging cables are available Aliexpress for little money!


Without a doubt: The flagship discipline of the K10 is battery life. The rest of the hardware is rather mediocre. Starting with the Mediatek 6763 (Helio P23), a 64-bit Octa-Core. This SoC combines four small (1.65 GHz) and four large cores (up to 2.3 GHz) and reaches 63,951 points in the Antutu benchmark.

Antutu Result

The smartphone does a fine job in terms of memory. Thanks to 64GB, you can store a lot of apps, pictures, and documents before you reach the end of the line. The 6GB RAM is also well-dimensioned; the main memory works quickly and enables smooth multitasking (4.5GB/s).

OukitelK10 A1SD OukitelK10 Androbench OukitelK10 3DMark2 OukitelK10 PCMark

The software of the Oukitel device is well adapted to the hardware. The processor achieves a high speed when using the standard functions, but games can also be played well on the smartphone, although the Helio P23 does not reach the performance of a Snapdragon 820/821. The graphics chip used is a Mali G71.

Android 7.1

As already mentioned, Oukitel goes without a home button or other physical keys on the K10’s display. Instead, there are on-screen buttons that can be shown and hidden. Ultimately it is a matter of taste, but in principle, an additional button outside the usable display area would be more elegant.

OukitelK10 Android2

However, it is very pleasing that the device is delivered with an almost unchanged Android 7.1.1 and also without bloatware and other scraps. The look of the icons is typical for Oukitel, but that doesn’t matter. In addition, all necessary Google Apps are pre-installed. Unlocking with “Double-Tap-to-Wake” is not possible, you could set it up with the gesture control.

If you are looking for the update function, you will not find it in the menu “About the phone“. But don’t worry: The firmware is updated as usual via OTA (Over The Air), the notification pops up when a Wi-Fi connection is active and the update starts.

At this point, the fingerprint scanner on the rear should not remain unmentioned. It unlocks the device absolutely reliably (10/10 attempts were successful). It can also be programmed for other functions, such as “Back to home screen”, “Answer Call” or “Return back screen”. A nice extra function, but it suffers from the enormous size and bulk of the device.

OukitelK10 Android1 OukitelK10 Android3 OukitelK10 Android4

In addition, you get a pre-installed QR code scanner, a notification LED and NFC (e.g. for non-contact payment).


In this discipline Oukitel K10 launches heavy artillery: There are four cameras installed, dual-dual, so to speak. The app is refreshingly easy to use and works reliably. In normal mode, you can take good snapshots; if you want to experiment, you can switch to “Pro” and adjust the iso, exposure and white balance. The modes Video, Face Beauty, Mono, HDR, Panorama, and Blur are also available.

In this case, “blur” stands for the bokeh effect, which – what a surprise – is a software-based cheating. All “dual camera” functions are therefore implemented via the software and do not offer any real added value. Funny side note: the software uses an aperture symbol to control the bokeh effect, as with a reflex camera. Apparently, no one at Oukitel understood how such a camera works: Aperture open = more bokeh, aperture closed = less bokeh. The K10’s app does it the other way around.

The main camera on the rear works with a Samsung S5K3P3 sensor, which can be raised to 21 MP (interpolated). What the second camera lens should be doing has not been revealed in the test. Even if you cover it, you still get the same images.

The same holds true for the front: two lenses, one of which does the work. After all, the resolution of 8 megapixels is relatively high, which guarantees acceptable selfies in practice. When using the front camera, the modes Pro, Panorama, and HDR are missing.

Considering the fact that the Oukitel K10 wants so much to show off about the camera (21 MP, two supposed dual cameras), the quality of the images is rather low. Although suitable snapshots can be taken, they are far from being of a high standard. The pictures shown here have been taken with great care and yet the focus (despite manual readjustment) is very often not right. On top of that, the images look very soft, almost a little blurry. The colours are pale, the contrasts flat and the exposure also anything but perfect, not only as soon as a too strong contrast (bright sky) is involved.


The good news: Oukitel K10 is a dual SIM device and allows the operation of two SIM cards. The bad news: If you do this, there is no option to add a Mirco-SD card. The hybrid slot allows only one of those 2 options.

Oukitel K10 8

Otherwise, K10 does what it’s supposed to: the voice quality is high, the reception is strong, and the reception of mobile data is fast thanks to LTE. Even in Wi-Fi, everything runs smoothly (802.11 a/b/g/n) and the Bluetooth connection is stable (standard: 4.2). In combination with GPS and GLONASS, K10 turns into a reliable navigation companion in the car.

The USB port (Type-C) on the bottom serves on the one hand for charging, on the other hand, it can also exchange OTG, i.e. data and energy, using the supplied adapter. In the case of Oukitel K10, however, the “adapter” topic also has a huge catch: the 6-inch device actually needs a USB-to-headphone jack adapter to be able to connect headphones.

But you should have that adapter with you, because the speaker of the K10 does not exactly provide a nice sound. At full volume, enjoying music is rather difficult: the sound is too quiet and too bright.

The package is completed by the standard equipment of sensors paired with nice extras such as NFC. Compass and gyroscope are also included.

Conclusion and alternative

Philip Benbi  1 von 2 1
Philip Hauck:

Oukitel K10 is out of line, no question. It’s big, very big, but not without reason: The smartphone is filled up with technology: NFC, giant battery, four (well, actually two) cameras and a huge storage.

It is incomprehensible that there was no room for a headphone connection. If you like big batteries, you’ve come to the right place. All others will be better off to invest their approximately 240€ elsewhere, for example in a slimmer and cheaper Ulefone Power 3.

Oukitel already dominates the ranking of the best battery-powered smartphones and is now adding to it with the K10. You have to cope with the weight and size of K10, the camera won’t bowl you over either. Otherwise, however, you get a successful overall package with the right focus: endless battery life!

  • Design and build quality 70 %
  • Display 70 %
  • Performance 80 %
  • Camera 50 %
  • Communication and connectivity 80 %
  • Battery 100 %

Price comparison

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270 USD*
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*Prices include shipping and toll. Intermediate changes of prices, ranking, delivery time and costs possible. Prices last updated on 21.02.2019

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