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Redmi K40

Redmi K40
Brand: Redmi
Category: Smartphones
  • Processor: Qualcomm Snapdragon 870
  • RAM: 8GB
  • Storage: 128GB
  • Display: 6.67-inch 2400*1080 Pixel FHD+ screen
  • Camera: 48.0MP + 8.0MP + 5.0MP
  • Operating System: Android 11 MIUI 12
  • Battery: 4520mAh(typ) Built-in


Our Rating

The overall rating is based on review by our experts

  • Camera 8 / 10
  • Battery Life 8 / 10
  • Connectivity 8 / 10
  • Design 9 / 10
  • Display 8 / 10
  • Hardware 8 / 10
  • Media 8 / 10
  • Network 8 / 10

Time flies, and in a blink of an eye it has reached the end of February. At the same time, the new smartphone market at the beginning of the year is also gradually kicking off. Take the next few days, many blockbuster new phones will be launched together, such as Redmi K40. The K40 series is a typical representative among them.

According to the official statement, as the new generation flagship product of Redmi, the Redmi K40 series will be officially released on February 25, and as the press conference approaches day by day At this stage, the Redmi K40 series is becoming more and more clear, from the appearance to the configuration to the price are confirmed.

Redmi K40 Appearance:

In terms of version, the Redmi K40 series includes two models, the Redmi K40 and Redmi K40 Pro. In terms of appearance, the Redmi K40 series adopts a 6.67-inch full-screen design with a camera area on top. Located in the middle of the top of the screen, the screen-to-body ratio is very impressive. It is worth mentioning that the Redmi K40 series screen is also full of highlights. It is known as the most expensive direct screen. In addition to the high refresh rate of 120Hz, it also uses The latest generation of E4 luminous material OLED screen not only has a clearer display effect under strong light, but also lowers power consumption under the same brightness. The display effect is expected.


In terms of hardware, the Redmi K40 series are different. The regular Redmi K40 is equipped with the Snapdragon 870 processor with a running score of around 670,000. The more high-end Redmi K40 Pro is equipped with the Snapdragon 888 processor with a running score. About 750,000, the performance is at the high-end level of the industry, and it can deal with daily mainstream applications without pressure. It runs MIUI12.5 system, with full blood version of LPDDR5 memory, and has excellent fluency. In addition, when equipped with 5G baseband, Both Redmi K40 and Redmi K40 Pro have realized multi-mode full Netcom support for 5G networks, and the network experience is at the forefront of the industry.


Taking pictures should be regarded as another highlight of the Redmi K40 series. The conventional Redmi K40 is equipped with a 48 MP AI camera combination for the main camera, and the higher Redmi K40 Pro has a 108 MP AI camera for the main camera. Combination, the camera parameters are in the industry’s first-class level, support ultra-wide-angle, macro, multi-zoom, portrait photography and other functions, the camera mode is also quite rich,

Battery Life:

in terms of battery life, Redmi K40 series built-in 4520 mAh battery, support 33W power The wired fast charging, the battery life is quite satisfactory. In addition, the Redmi K40 series is also equipped with dual speakers, side fingerprints, Wifi6 enhanced version, linear motor and other functions. The external amplifier, unlocking speed, data transmission, and tactile feedback are all remarkable. .

As for the price that everyone cares about, the Redmi K40 series still continues to have an outstanding price-performance ratio. The regular Redmi K40 starts at around $499.99, and the higher Redmi K40 Pro is $629/ Compared with similar configuration machines in the industry, the model is much cheaper.  I have to say that the Redmi K40 series has good competitiveness among the models at the same price. , What do you think of the Redmi K40 series? We Welcome everyone to leave a comment and exchange views with each other.



Brand Redmi
Model K40
Released Date 2021
Status Available


Type Smartphone
Dimensions 163.7x76.4x7.8mm
Product Weight 196g


Display Type AMOLED
Size 6.67 inch
Resolution 2400×1080 pixels
Touch Screen Yes


CPU Qualcomm Snapdragon 870
GPU Adreno 650
RAM (Memory) 8GB
Internal Storage 128GB
Sensors Ultrasonic range sensor, ambient light sensor, Acceleration sensor, Gyroscope, Infrared remote controller, Barometer sensor.
Battery Capacity 4520mAh(typ) Built-in


Operating System Android 11
User Interface MIUI 12


Rear Camera 48.0MP 8.0MP 5.0MP
Flash Yes
Front Camera 20.0MP


SIM Dual
Dual SIM Yes


Wi-fi Yes
Wireless Charging Yes
Headphone Jack Yes


Battery Capacity 4520mAh(typ)
Placement Built-in



4G LTE FDD-LTE B1 / B2 / B3 / B4 / B5 / B7 / B8 / B18 / B19 / B26 / B28A, TDD-LTE B34 / B38 / B39 / B40 / B41 / B42
5G NR Bands n1 / n3 / n28A / n41 / n77 / n78


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