Oukitel is known for its battery giants and the K7 is not the first smartphone with a gigantic battery of 10,000 mAh. As in the past, Oukitel relies on a leather rear and a simple black design. The following review will clarify what the smartphone has to offer apart from a large battery.
Design and build quality
Of course, smartphones with a large battery do not belong to the slimmest ones. But even the most robust outdoor smartphone looks almost thin compared to the K7. With 168 x 77.7 x 15.5 mm, this smartphone is one of the largest, thickest and, with a weight of 308g, definitely one of the heaviest models I have ever held. This is also noticeable in the handling, because the block feels not really comfortable in the hand and even more uncomfortable in the pocket, if the Oukitel smartphone fits in.
Apart from the size, I think the smartphone looks really stylish. The black device is rounded off with golden highlights and in addition the leather on the rear looks noble. Apart from the leather, however, the Oukitel phone is made of no other “high-quality” materials. Instead, plastic and rubber are used, which decreases the premium feeling yet again. Although the materials are not premium, the build quality is impeccable. There are no larger gaps and nothing creaks or wobbles. Even if the edge is thick and feels rubbery, you should not be mistaken for thinking that this smartphone is particularly robust. Falls can be cushioned by the edge, but the display is flush with the front. This entails a high risk when falling down, as the display can crack directly if the smartphone lands on the front.
The dual-camera, flash and fingerprint sensor are located on the rear. Unfortunately, they are not embedded in the leather, but surrounded by a plastic plate, which makes the mobile phone a little thicker at this point. On the right side you find power button, volume control and the SIM slot.
Although the smartphone is huge, the space on the front is not used. As usual, earpiece, sensors and front camera are placed above the display. A notification LED is also provided. Below the display there is only a black border and no soft-touch buttons. Thus, both 1cm-spaces above and below remain unused, which makes the display, despite its 6 inches, appear small in this huge smartphone.
On the top side there is a classic headphone connection, on the bottom side of the smartphone you can see a micro-USB connection, loudspeaker and microphone. Even if there are two openings for speakers, it is not a stereo speaker. Nevertheless, the speaker delivers a decent sound. The highs are not jingling, mid frequencies are dynamic and even depths are perceptible. Even at full volume the speaker doesn’t oversteer.
The Oukitel K7 looks noble at first glance, but the materials used are not at the same level, apart from the rear, even if the build quality is good. However, the smartphone is anything but a treat for the hand and for me completely impractical in terms of size and weight. Why they also provide silicone protective cover remains a mystery to me, as with the cover the mobile phone only gets more bulky.
Oukitel K7 scope of delivery
- Power supply
- Micro-USB cable
- OTG cable
- Silicone protective cover
- SIM ejection tool
The Oukitel K7’s 6-inch display has a resolution of 2160 x 1080 pixels, ensuring a razor-sharp image with no visible pixels. Even the maximum brightness is good with a maximum of 500 Lux and so you can still read the display in sunlight. The black level is also convincing with a maximum of 3 Lux. The contrast is good and the colours are natural. However, you cannot customize the display via MiraVision.
The panel processes up to 5 points of contact simultaneously and reacts well to every input. Unfortunately, the display is not protected by Gorilla Glass or similar, which would have matched the otherwise so robust exterior of the smartphone, especially since the display is flush with the front and therefore is susceptible to any external influence. The display of the Oukitel K7 is sharp and colourfast, but it is a pity that Gorilla Glass is missing, so that the display is completely unprotected without a screen protector.
System and performance
The Oukitel K7 features a slightly older Mediatek MT6750T with 8 Cortex A53 cores clocking at 1.5 GHz. It is supported by 4 GB RAM with an average speed of 3.6 GB/s. The personal data and the system are stored on the 64 GB main memory. With a reading/writing speed of 125 or 135 MB/s, it is also on average in terms of speed. If this is not enough for you, you can expand the memory with a micro-SD card. But then you have to do without the dual SIM function. Even if the smartphone is not a “performance monster”, the performance is still sufficient to master daily tasks as well as games with medium demands.Antutu Result Geekbench Multi Result Geekbench Single Result
Oukitel K7 with Stock Android
The Oukitel K7 runs with a Stock Android 8.1, which has been extended by one or the other special function. The pure Android runs perfectly smoothly and there are no jerks. You don’t have to do without the other conveniences of special functions either: 3-finger screenshot, fingerprint sensor with special functions, flip-silent – all available, only SmartWake is missing. Unfortunately, the smartphone only has the Widevine Sercurity Level 3, which prevents streaming in full HD with apps such as Netflix or PrimeVideo. At least there is no bloatware and the device is free of malware or similar.
The system of the Oukitel K7 does not included an own launcher or themes. Everything looks tidy and has been extended by the usual special functions. The performance is okay, but no longer corresponds to the current middle class and has hardly improved compared to the 1 year old predecessor (K10000 Pro).
The main camera is a dual-camera with 13+2 MP. As so often, the secondary camera is a dummy and is not used to create the bokeh effect. Nevertheless, the main camera takes more than usable pictures. Colours and sharpness are good and especially with close-ups the Oukitel K7 performs great. Focus and shutter release time are very good. However, the video recordings that can be recorded in 1080p (at maximum) are somewhat weak. The change of focus between near and far objects often happens with delay or even has to be done manually. In addition, there is a clear background noise, which basically makes videos unusable.
The front camera has a 5MP resolution and takes quite nice pictures. The grain is naturally much stronger, but the colours are still natural. With the front camera, however, the shutter release time is significantly slower than with the rear camera.
Overall, the camera of the Oukitel K7 cuts a good figure and takes nice photos. However, the video function is completely unusable.
Connectivity and communication
The device supports all improtant 2G, 3G and 4G frequencies. The reception was always very good and LTE was almost always available to me. The Oukitel can hold either 2 Nano-SIM cards or 1 SIM card and one micro-SD card – so it is a hybrid slot. The call quality is unfortunately only mediocre. The speaker is good and transmits the voices clearly. Unfortunately, the microphone doesn’t deliver a clear sound, so the caller perceives your voice very dull.
Bluetooth 4.0 is also included, which worked perfectly and was connected to my sound system or my hands-free kit without any problems. There is almost nothing to complain about WiFi. Both 2.4 and 5 GHz standards are supported. However, the reception in 5 GHz is limited in the range and in some rooms, where I still have reception with other smartphones, the K7 fails. In the 2.4 GHz network, there were no problems. Unfortunately, Oukitel does not clearly indicate which WiFi standards (a/b/g/n) are supported. The GPS of the Oukitel K7 is very accurate and the position is determined within seconds. The integrated compass also makes it easy to navigate on foot. In addition to the compass, a gyroscope sensor and the 3 standard sensors (proximity, light and acceleration sensors) are also available. The built-in fingerprint sensor reacts quickly and unlocks the smartphone in 9 out of 10 attempts, but the display only wakes up from the standby after 2-3 seconds. If the display is switched on, the device is unlocked immediately.
The battery is the reason to buy the Oukitel K7. It is supposed to hold a full 10,000 mAh and promises to be a battery monster. Unfortunately, I can’t confirm this value. I could only measure 8500-8700mAh, which is out of the tolerance range. Also the battery benchmark of 13h 36min is clearly below the value of the predecessor and definitely not at the level of the competition with less capacity. In daily use, the smartphone lasted about three days. Besides standard tasks like WhatsApp and surfing I also played some games for about 1-3 hours on my phone every day. Even though the smartphone supports Quick-Charge, it takes over 3 hours to get back to 100%.Battery lifetime Result Unit: hours