Price and specifications on Xiaomi Redmi K40

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Summary

Technical sheet of Xiaomi Redmi K40

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Description

Pros

Cons

  • Stereo Speakers
  • Display quality
  • Design
  • Gaming experience
  • Infrared port
  • No Mini Jack
  • No FM Radio
  • No Google Services preinstalled

Finding the best price for the Xiaomi Redmi K40 is no easy task. Here you will find where to buy the Xiaomi Redmi K40 at the best price. Prices are continuously tracked in over 140 stores so that you can find a reputable dealer with the best price

Brand

Brand Xiaomi
Aliases M2012K11AC, HAYDN, M2012K11G
Smartphones by Xiaomi

Release Date

Release dateFebruary 2021, 3 months ago
State On Sale

Xiaomi Redmi K40 prices

Versions and prices
Xiaomi Redmi K40 China · 6GB · 128GB $ 469
Xiaomi Redmi K40 China · 8GB · 128GB $ 399
Xiaomi Redmi K40 China · 8GB · 256GB $ 435
Xiaomi Redmi K40 China · 12GB · 256GB $ 459
Read More

Related

Predecessor
Similar name

Design & Materials of Xiaomi Redmi K40

Structure

Size
76.4 mm 163.7 mm 7.8 mm
View 3D model Print 3D Model
Weight 196 g
Usable surface 85 %
Materials Plastic , Glass , Splash resistant design
Colors
Black
White
Blue

Screen

Diagonal 6.67"
Type Amoled
Samsung E4
Aspect Ratio 20:9
Resolution 1080 x 2400 px FHD+
Density 386 ppi High Density
Others
  • Hole-punch Notch
  • Max brightness HBM - 900 cd/m²
  • Refresh rate 120 Hz
  • Touch sampling rate 360 Hz
  • Peak brightness - 1300 cd/m²
  • 5000000:1 contrast ratio
  • HDR10+
  • DCI-P3
  • True Tone display
  • MEMC
  • Scratch resistant
  • 2.5D curved glass screen
  • Corning Gorilla Glass 5
  • Capacitive
  • Multi-touch
  • Frameless
Audio
Audio
  • Dolby Atmos
  • Hi-Res Audio
  • Stereo Speakers

Performance & Hardware of Xiaomi Redmi K40

Processor

Model Qualcomm Snapdragon 870
CPU 1x CortexA77 3.20 GHz + 3x CortexA77 2.4 GHz + 4x CortexA55 1.8 GHz
Type Octa-Core
Nanometer 7 nm
Frequency 3.2 GHz
64 Bits Yes
More smartphones with Qualcomm Snapdragon 870 processor

Graphics

GPU Qualcomm Adreno 650

RAM

RAM 6 GB
Type RAM LPDDR5
More smartphones with 6GB RAM memory

Antutu

Score
722.864 Antutu v9
Overall performance better than 98% of devices

Storage

Capacity 128 GB
Type UFS Storage 3.1
SD Slot No
More smartphones with 128GB of internal storage

Security

Fingerprint Yes, on the side

Sensors

Fingerprint Yes
Proximity Yes
Light sensor Yes
Accelerometer Yes
Compass Yes
Gyroscope Yes
Others
Notifications LED --
Cooling system Yes
Gaming buttons No
Extra
  • X-axis linear motors

Camera of Xiaomi Redmi K40

Triple rear camera

Standard
1
Resolution 48 Mpx
Sensor Sony IMX582 Exmor RS
Type CMOS
Aperture ƒ/ 1.79
ISO --
Pixel size 0.80 µm
Pixel Binning 1-4 (2x2)
Sensor size 1/2
Wide Angle + Macro
2
Resolution
8 Mpx
Sensor
Sony IMX355
Type
CMOS BSI
Aperture
ƒ/ 2.2
Pixel size
1.14 µm
Sensor size
1/2.8
3
Resolution
5 Mpx
Sensor
Samsung S5K5E9
Type
ISOCELL
Aperture
ƒ/ 2.4
Pixel size
1.12 µm
Sensor size
1/5
Flash Dual LED
Optical Stabilisation No
Slow Motion Video Yes, 960 fps
Features
  • 4K Video
  • Digital zoom
  • Triple camera
  • Digital image stabilization
  • Touch focus
  • Manual focus
  • Autofocus
  • HDR
  • Continuous shooting
  • White balance settings
  • ISO settings
  • Exposure compensation
  • Scene mode
  • Self-timer
  • Panorama
  • Geotagging
  • Face detection
More smartphones with IMX582 Exmor RS lens modelMore smartphones with Dual LED

Selfie

Resolution 20 Mpx
Sensor Samsung S5K3T2
Type CMOS
Aperture Unknow
Pixel size 0.80 µm
Pixel Binning 1-4 (2x2)
Sensor size 1/3.4
Others
Extra
  • 119º Ultra wide angle lens
Kimovil Frequency Checker

Network compatibility

Connectivity of Xiaomi Redmi K40

Bands

5G n1 (2100), n3 (1800), n28a (700), n41 (2500), n78 (3500), n79 (4700)
4G LTE B1 (2100), B2 (1900), B3 (1800), B4 (1700/2100 AWS 1), B5 (850), B7 (2600), B8 (900), B18 (800), B19 (800), B26 (850), B28a (700), B34 (TDD 2100), B38 (TDD 2600), B39 (TDD 1900), B40 (TDD 2300), B41 (TDD 2500), B42 (TDD 3500)
3G B1 (2100), B2 (1900), B4 (1700/2100 AWS A-F), B5 (850), B6 (800), B8 (900), B19 (800)
2G CDMA BC0 (800), B2 (1900), B3 (1800), B5 (850), B8 (900)

SIM card

TypeDual SIM Dual Standby (Nano SIM + Nano SIM)

SIM cards (MiniSIM) can be cut to MicroSIM, MicroSIM can be cut to NanoSIM and a SIM can even be cut to a NanoSIM (although not recommended). Download this SIM Cutting Template and forget about having to ask your operator for a new SIM...

Wi-Fi

Standards 802.11a , 802.11b , 802.11g , 802.11n , 802.11n 5GHz , 802.11ac, WiFi 6 (802.11ax)
Others
  • Dual band
  • Wi-Fi Hotspot
  • Wi-Fi Direct
  • Wi-Fi Display
  • Wi-Fi MiMO

Bluetooth

Version Bluetooth 5.1 LELow energy consumption
Profiles
  • A2DP (Advanced Audio Distribution Profile)
  • LE (Low Energy)
  • APT-x
  • LDAC
  • SBC
  • AAC

Navigation

Supports GPS, A-GPS, GLONASS, Beidou, QZSS, Galileo, GPS (L1+L5), Galileo (E1+E5a), NavIC System, QZSS (L1 + L5)

USB

Charging Yes
Mass Storage Yes
USB On-The-Go (OTG) Yes
USB Type C Yes

SAR

-- --
Others
NFC
Yes
Audio Jack
No
Radio FM
No
Computer sync
Yes
OTA sync
Yes
Infrared
Yes
Tethering.
Yes
VoLTE
Yes

Battery of Xiaomi Redmi K40

Capacity
4520 mAh
Type Li-Polymer
Fast charge Yes , 33.0W
Others
  • Non-removable
Extra
  • Supports QC3 + / PD3.0 fast charging protocol

Software of Xiaomi Redmi K40

Software

Operating System Android 11 Red Velvet Cake
MIUI V12 (Android 11)
Google Services (official) No
More smartphones with MIUI V12 (Android 11) operating system

Reviews

Video reviews

User reviews about the Xiaomi Redmi K40

Overall satisfaction
Not enough reviews
2 reviews
  • Screen10
  • Performance9.8
  • Camera9.1
  • Connectivity9.2
  • Battery9.0
Want to comment on the Xiaomi Redmi K40?

It'll only take a minute, you'll help people decide.

Latest reviews added

  • Pretty dang good

    There's only a few kinks. For one, I wish MIUI chose which process to kill to save on battery a bit better than it currently does. It took a while to get Snapchat notifications to show as a result of that. Secondly, the navbar buttons could use a bit more adjustment than MIUI allows. Lastly, and this is the biggest issue, MIUI on the China releases of phones doesn't allow you to change the launcher to anything other than what Xiaomi approves of. So you're basically stuck with either the Poco launcher or the stock launcher. I couldn't find out any way to get the Google news feed on either of them so that was a bit of a shame. Other than those kinks the phone is great.

    Pros
    • Display
    • Performance
    • Battery life
    • Charging speed
    Cons
    • A few things with MIUI (that can somewhat be solved by getting the Poco F3, the global version of this)
    • 9.5
    • Screen10
    • Performance9.6
    • Camera9.0
    • Connectivity8.0
    • Battery9.0
  • Auto
    The best in the market quality price

    A mobile for about 500 euros with 12gb of ram and 256gb of memory, the best components on the market, no rival can face it

    • 10
    • Screen10
    • Performance10
    • Camera9.2
    • Connectivity10
    • Battery9.0

Questions · FAQ

Frequently asked questions about the Xiaomi Redmi K40.

What are the features of the Xiaomi Redmi K40?

These are the main features and specifications of the Xiaomi Redmi K40:

  • Screen: 6.67" Amoled
  • Resolution: 1080 x 2400 px · FHD+
  • RAM: 6GB - 12GB
  • Storage: 128GB - 256GB
  • Processor: Qualcomm Snapdragon 870

What is the price of Xiaomi Redmi K40?

The price of the Xiaomi Redmi K40 in United States varies between 399$ and 469$ depending on the specific version and its features. Below you can see the current prices for the different Xiaomi Redmi K40 versions:

  • Xiaomi Redmi K40 - China · 6GB · 128GB: $ 469
  • Xiaomi Redmi K40 - China · 8GB · 128GB: $ 399
  • Xiaomi Redmi K40 - China · 8GB · 256GB: $ 435
  • Xiaomi Redmi K40 - China · 12GB · 256GB: $ 459

How long does the battery of the Xiaomi Redmi K40 last?

The Xiaomi Redmi K40 battery has a capacity of 4520 mAh.

In which colours is the Xiaomi Redmi K40 available?

The Xiaomi Redmi K40 is available in 3 colours: black, white and blue.

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9.0
Ki Price/Quality
Score
  • 8.6 Design & Materials
  • 8.8 Performance & Hardware
  • 7.5 Camera
  • 8.2 Connectivity
  • 7.3 Battery
What is a Ki score?
Ki is an automatic score based on the specifications and prices of devices. It is calculated using over 200 variables to rank smartphones, tablets and other devices from best to worst.
How do we calculate the Ki?

In this case, to determine the score we evaluate 5 general aspects:

  • Design and screen
  • Hardware and performance
  • Camera
  • Connectivity
  • Battery

Once these 5 factors have been rated, we introduce the price variable. This means that any two devices with the same ratings get a different Ki score for quality vs price.

Even a device objectively worse than another may have a higher Ki score if it has a better price.

Does the Ki score change?

The Ki varies as time goes by. As new devices with better specifications enter the market the Ki score of older devices will go down, always being compensated of their decrease in price.