KOOLNEE is a small Chinese smartphone company whose first products (K1 and K1 Trio) were very well received, but they are difficult to distinguish in a large device market. Therefore, the company wanted to show something completely new. This is how he presents us with a fresh and fun KOOLNEE Rainbow.
The manufacturer claims that the KOOLNEE Rainbow is an original and unique smartphone. But despite this statement, Rainbow is a smartphone with an ordinary budget, with a distinguishing feature: together with the terminal, you get three removable rear panels, one gold, black and blue, which can be changed every day if you like!
KOOLNEE Rainbow: Design and construction
The KOOLNEE Rainbow has an elegant and youthful appearance, also provides a feeling of a soft and comfortable grip. As we mentioned, the rear cover is interchangeable colors, to adapt the appearance of the phone to your “mood”.
In terms of design, this is a smart mobile ordinary budget. In front, you will not see the minimum frames with an aspect ratio of 18:9, but given the price, it is quite logical. You will have 13 mm frames on the top and bottom. On the screen, there is a front camera, a speaker, and sensors.
There are three touch control buttons below the screen. The back panel is made of a plastic material and has mosaic finishes. The upper left has the sensor of the main camera and the LED flash, below is the logo of the company and below we have the name of it.
At the top, there is only one microphone for noise reduction. For its part, we will have a hybrid system slot (SIM and memory card). The power and volume buttons are on the right side. The audio jack, the microphone, the micro USB port and the multimedia speaker are located at the bottom.
The dimensions of the Rainbow KOOLNEE are 14.65 cm in length, a width of 7.18 cm, a thickness of 0.93 and a weight of 157 g. The size of the phone does not differ from most of the economical 5.0-inch smartphones and is available in three colors: black, blue and gold.
KOOLNEE Rainbow: Screen
It is equipped with an IPS HD screen (resolution of 1280 x 720 pixels) of 5.0 inches with an aspect ratio of 16:9 and a color density equal to 294ppp. It is multi-touch up to 10 touches and the top of the screen is protected from the mechanical influences of 2.5D curved glass.
According to the manufacturer, it provides vivid and natural images of any angle, so it is good to watch movies and images. But we all know that it’s just a good screen. It’s not perfect, it might be a bit misleading, especially at a large angle. The range of brightness is similar: in the dark, it is comfortable to use; in the sunlight, it will be efficient enough.
KOOLNEE Rainbow: Hardware
The 32-bit Mediatek MT658A processor is responsible for the phone’s performance. It consists of a 4-core ARM Cortex-A7 with a frequency of 1.3GHz and an ARM Mali-400 MP2 graphics chip with a frequency of 500MHz. The device also has 1GB of RAM and 8GB of internal memory, which can also be expanded with a memory card of up to 32GB. This, to a certain extent, compensates for the small storage space and allows you to save a little more.
Its performance may not be enough for heavy games and applications, but it is more than efficient to surf the Internet and run simple games. Also, the device can operate at a temperature of -15 ° C to + 55 ° C, but use in extreme conditions will not benefit the battery and processor.
KOOLNEE Rainbow: Operating system and connectivity
The KOOLNEE Rainbow adopts the latest Android 8.1 operating system, faster and more stable than ever, offering an unparalleled user experience for you.
The terminal comes without fingerprint sensor, so it is a feature completely absent in the device. The connectivity provides for the use of Dual SIM (with dual standby mode), Wi-Fi 802.11 b / g / n, Bluetooth 4.0 (enhanced with EDR and A2DP), 4G / LTE with support for the 20 MHz band 20, GPS (A-GPS), 3.5 mm audio jack and micro-USB 2.0 for data traffic and recharge the battery.
KOOLNEE Rainbow: Camera
The KOOLNEE Rainbow is equipped with two cameras, one on the front and one on the back. On the back it houses the only rear camera with an 8.0MP CMOS sensor, equipped with LED flash, capable of recording video at 720p and 30 frames per second, and compatible with HDR in various modes (stage, panorama, continuous shooting, with digital zoom, etc.).
The quality of the photo, in relation to the price, will be acceptable. Sometimes, the white balance will be incorrect, but it does not prevent getting good photos with details under normal lighting conditions. And the flash will work correctly. The front camera has a resolution of 5.0MP, being enough for selfies and video calls.
KOOLNEE Rainbow: Battery
It has a 2400mAh lithium polymer battery, which is enough for this model with a 5-inch HD screen. Increase battery time is possible when setting the energy saving, this allows the device to support the standard work for a long time: Internet, games, video, etc. It can work in conversation or web browsing mode for 10-12 hours and in standby mode for up to 20 days. The total charge time is 3 hours.
KOOLNEE Rainbow: Specification Table
|SIM card slot:||Dual SIM with standby mode|
|SIM type:||Double Micro SIM|
|SCREEN AND DIMENSIONS|
|Type of screen:||Capacitive IPS|
|Screen size:||5.0 inches|
|Screen resolution:||1280 x 720 pixels, 294ppp|
|Dimensions:||14.65 x 7.18 x 0.93cm|
|Cores:||1.3GHz, four cores|
|GPU;||ARM Mali-400 MP2|
|External memory:||Up to 32GB|
|Band technologies:||2G: GSM 1800MHz,GSM 1900MHz,GSM 850MHz,GSM 900MHz
3G: WCDMA B1 2100MHz, WCDMA B8 900MHz
|Wireless connectivity:||Wi-Fi: 802.11 b/g/n, Bluetooth 4.0, GPS, A-GPS|
|Interfaces:||Micro USB port, 3.5mm port, a hybrid slot for external memory and SIM card|
|Characteristics:||Autofocus, face detection, touch focus, continuous shooting, panoramic, HDR, geotagging, scene mode.|
|Includes:||KOOLNEE Rainbow, two rear covers of different colors, USB cable, charging adapter.|
KOOLNEE Rainbow: Where to buy it?
This is an excellent low budget smartphone with a beautiful design. So, in the case of being interested in acquiring KOOLNEE Rainbow, we leave below direct links to the online stores of Gearbest, AliExpress, and Banggood to make your shopping experience easier and faster. You can get it for an approximate price of $65.99 (€53.62) at Gearbest, between $55.19 – $68.99 (€44.85 – €56.06) on Aliexpress and $49.99 (€40.62) at Banggood.
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