KOOLNEE Rainbow review: 5-inch budget smartphone with Android 8.1

KOOLNEE Rainbow review: 5-inch budget smartphone with Android 8.1

Chinese company Koolnee introduced a new smartphone called KOOLNEE Rainbow.

KOOLNEE is a well-known Chinese smartphone company whose first products (Koolknee K1 and K1 Trio) were pretty well received, but they are difficult to distinguish in a large market of budget devices. Therefore, the company wanted to show something completely new.

The manufacturer assures that Koolnee Rainbow is an original and unique smartphone of its kind. But despite this statement, Rainbow is an ordinary budget smartphone, but with one proprietary feature. Together with the smartphone you get three removable rear panels, black, gold and blue, which can be changed at least every day.

The novelty of the new brand was a 5-inch screen, the MediaTek MT6580A processor, 1GB of RAM and 8GB of storage, a 2400mAh battery and Android 8.1.

In today’s review of Koolnee Rainbow, we will get acquainted with the basic specifications, functions and learn the best price for the phone.

KOOLNEE Rainbow 3G Smartphone

Price: $ 65.99

5.0 inch 1280 x 720 pixel IPS screen, RAM 1GB, ROM 8GB, Android 8.1, MediaTek MT6580A 1.3GHz, Quad Core

KOOLNEE Rainbow 3G Smartphone

Price: $ 65.99

5.0 inch 1280 x 720 pixel IPS screen, RAM 1GB, ROM 8GB, Android 8.1, MediaTek MT6580A 1.3GHz, Quad Core

KOOLNEE Rainbow: Specifications

Display5-inch display, resolution (HD) 1280x720
CPUMediaTek MT6580A
OS Android 8.1
Memory 1GB RAM+ 8GB ROM
Camera5MP front camera + 8MP rear camera
BluetoothBluetooth 4.0
Battery2400mAh 
Product size146.5 x 71.8 x 9.3 mm
Product weight157 g
Color Gold, Black, Blue

KOOLNEE Rainbow review: 5-inch budget smartphone with Android 8.1

KOOLNEE Rainbow: Design

In terms of design, this is an ordinary budget smartphone.

In front, you will not see the minimum frames and the ratio of the sides of 18: 9, but given the price, it is quite logical.

On the front surface is a 5.0-inch screen with a classic ratio of 16: 9 and 13-millimeter frames from the top and bottom. Above the screen is a front camera with a resolution of 5 megapixels, a speaker and sensors.

KOOLNEE Rainbow review: 5-inch budget smartphone with Android 8.1

There are three control touch buttons below the screen.

The back panel is made of plastic and the picture on it resembles a mosaic, at the top left is the main camera sensor and LED flash, below is the company logo and even below its name.

At the top, there is only a microphone for noise reduction. Tray without surprises – a hybrid system of slots, you can use a memory card if you refuse the second SIM-card. The power and volume buttons are on the right side. Audio jack, microphone, micro USB port and multimedia speaker are located on the bottom.

KOOLNEE Rainbow review: 5-inch budget smartphone with Android 8.1

Dimensions Koolnee Rainbow is a length of 146.5 mm, width 7.18 mm, thickness 9.3 mm, weight 157 g. The size of the phone does not differ from most 5.0-inch smartphones. The phone is available in three colors: Black, Blue and Gold.

KOOLNEE Rainbow review: 5-inch budget smartphone with Android 8.1

KOOLNEE Rainbow: Display

The smartphone has a 5-inch IPS display with a 16: 9 aspect ratio and a resolution (HD 720) 1280 x 720 pixels. The top of the display is protected from mechanical influences 2.5D Curved Glass. Multi-touch for 10 touches.

Just a good display. It is not perfect, the inversion is a little misleading, especially at a large angle. The range of brightness is liked – in the darkness it is comfortable to use, in the sunlight, too, will suffice.

KOOLNEE Rainbow review: 5-inch budget smartphone with Android 8.1

KOOLNEE Rainbow: Performance

The 32-Bit MediaTek MT6580A processor is responsible for the performance of the phone. It consists of 4-core ARM Cortex-A7 with a frequency of 1.3GHz and an ARM Mali-400 MP2 graphics chip with a frequency of 500 MHz.

The device also has 1 GB of RAM and 8 GB of internal memory, which can additionally be equipped with a memory card up to 32 GB. This to some extent compensates for a small amount and allows you to store a sufficient amount of data.

KOOLNEE Rainbow review: 5-inch budget smartphone with Android 8.1

Performance gadgets may not be enough for heavy games and applications, but it is more than enough to sit on the Internet and play simple toys. The processor does not heat up and does not reset the clock speed. According to the results of testing, the device is able to operate at a temperature of -15 to +55 degrees Celsius, but use in such extreme conditions will not exactly benefit the battery and the processor.

On the smartphone installed a new system Android 8.1.

KOOLNEE Rainbow review: 5-inch budget smartphone with Android 8.1

KOOLNEE Rainbow: Camera

The smartphone is equipped with two cameras, one on the front side and one on the back cover.

The main rear camera has a resolution of 8-megapixels, helps it LED-flash.

The quality of the photo, relative to the price, is excellent. Yes, sometimes the white balance on the automatic machine is wrong, but it does not prevent getting good photos on details in normal lighting conditions. And the flash works out correctly.

Did not disappoint and the video mode. You can shoot a video as 720p @ 30fps. The only point is that you can only focus on tapping on the screen.

The front camera has a resolution of 5-megapixels, it is quite enough for selfies and video calls.

KOOLNEE Rainbow review: 5-inch budget smartphone with Android 8.1

KOOLNEE Rainbow: Battery

The smartphone has a lithium-polymer battery at 2400mAh, which is more than enough for this model with its 5-inch diagonal display. Increase the battery runtime helps the ability to configure power savings. This allows the device to withstand the standard loads for quite some time – the Internet, games, video, etc. In particular, it is able to work in a talk or web surfing mode for 10-12 hours, and in standby mode up to 20 days. Full charging time is 3 hours.

KOOLNEE Rainbow review: 5-inch budget smartphone with Android 8.1

KOOLNEE Rainbow: Conclusion

A smartphone, for a $ 65 price, does not just look good, it looks great. Good hardware for such money, a nice display with an oleophobic coating and a large diagonal, cameras on the level. The battery is not super, but undemanding users who usually use budget phones, batteries should suffice.

In general, this is the ideal budget smartphone.

KOOLNEE Rainbow: Price

Buy Koolnee Rainbow at the best price in the online store Gearbest for $ 65.99.

KOOLNEE Rainbow 3G Smartphone

Price: $ 65.99

5.0 inch 1280 x 720 pixel IPS screen, RAM 1GB, ROM 8GB, Android 8.1, MediaTek MT6580A 1.3GHz, Quad Core

KOOLNEE Rainbow 3G Smartphone

Price: $ 65.99

5.0 inch 1280 x 720 pixel IPS screen, RAM 1GB, ROM 8GB, Android 8.1, MediaTek MT6580A 1.3GHz, Quad Core

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