1/15
- Black
- Grey
- Blue
- Green
- Silver
- 5 colours
Overview
NeoScore
6.4
#1331 of 6247
- Design & display
- 7.5
- Performance & hardware
- 6.1
- Camera
- 6.4
- Connectivity
- 7.2
- Battery & charging
- 5.2
Strengths
- Its 1300-nit peak brightness is higher than that of most phones of its time.
- At 7.7 mm thick, it is among the thinnest phones of its time.
- Its AnTuTu score of 785,648 is better than that of most phones of its time.
Weak points
- The 1/2.96″ main camera sensor is smaller than those in most phones of its time.
- The 4500 mAh battery has less capacity than those in most phones of its time.
- Display
- 6.67″AMOLED1,080 × 2,400 px120 Hz
- Design
- 195 g76 mm163.2 mm7.7 mm
- Performance
- Qualcomm Snapdragon 870Octa-Core12 GB RAM128 GB / 256 GB
- AnTuTu
- 785,648Better than 82% of phones
- Battery
- 4,500 mAh67 W
- Cameras
- 48 Mpx · f/1.88 Mpx · f/2.22 Mpx · f/2.4selfie 20 Mpx
- Network
- 5G4G3G2G
- Software
- Android 12
Editorial report
Xiaomi Redmi K40S technical sheet
The Xiaomi Redmi K40S suits buyers who put a bright display, broad connectivity and fast charging high on the list. Its main trade-offs are a main camera sensor smaller than those in most phones of its time and a lower-capacity battery. This version pairs 6 GB of RAM with 128 GB of storage; the phone is also sold in configurations up to 12 GB / 256 GB.
The 6.67″ AMOLED display reaches 1300 nits peak brightness, higher than that of most phones of its time. At 7.7 mm thick, the phone is among the thinnest of its time, while its 120 Hz refresh rate pairs with a 1080 × 2400 px resolution. Gorilla Glass 5 and Always-On Display add to the screen features.
Performance is better than that of most phones launched around the same time, with an AnTuTu result of 785,648. The camera overall is also better than that of most phones of its time and includes optical image stabilization, 4K video and an ultrawide camera. The specific drawback is the 1/2.96″ main camera sensor, which is smaller than those in most phones. The 4500 mAh battery has less capacity than most, although its 67 W fast charging is better than that of most.
Connectivity is among the best of its time, with Wi-Fi 6, NFC, Bluetooth 5.2, 5G and dual Nano-SIM. This version has no Google Services. With an overall NeoScore of 6.4 and an overall standing better than most phones of its time, the Redmi K40S is worth considering for buyers who value its display and connectivity and can accept its two trade-offs.
Technical index
NeoScore
NeoScore is NeoTeo's technical index: it weighs each phone's verified specifications and compares them with those of the phones of its time.
Prices in United States
Selected variant
6 GB / 128 GB / China
Design & display
7.5
- Display Technology AMOLED
- 8.7
- Display Refresh Rate 120 Hz
- 9.0
- Display Pixel Density 395 ppi
- 8.3
- Peak Display Brightness 1,300 nits
- 8.8
- Display Features Hole-Punch Notch, Gorilla Glass 5, HDR10+, Always-On Display, DCI-P3, Capacitive Touch, Multi-Touch, Scratch Resistant, Frameless
- 5.5
- Weight 195 g
- 6.5
- Resistance Features IP53
- 2.0
- Usable Surface 86.6 %
- 8.5
- Body Thickness 7.7 mm
- 8.6
Performance & hardware
6.1
- AnTuTu Score 785,648
- 3.9
- RAM Capacity 12 GB
- 5.1
- Storage Type UFS 3.1
- 7.5
- Processor Process Size 7 nm
- 6.0
- Maximum Storage Capacity 256 GB
- 5.6
- Maximum CPU Clock 3.2 GHz
- 8.7
- RAM Type LPDDR5
- 8.0
Camera
6.4
- Sensor Size 1/2.96″
- 3.1
- Aperture f/1.8
- 8.0
- Optical Image Stabilization Yes
- 10.0
- Resolution 48 Mpx
- 8.0
- Camera Features Autofocus, Continuous Autofocus, Phase-Detection Autofocus, Manual Focus, Touch Focus, HDR, Panorama, Geotagging, White Balance Settings, ISO Settings, Manual Exposure, Self-Timer, Burst Mode, Continuous Shooting, Time-Lapse, RAW Capture, Night Mode, Digital Image Stabilization, Optical Stabilization, Ultra Stable Video, 4K Video, LED Flash, Face Detection
- 8.0
Connectivity
7.2
- Connectivity Features NFC, USB Charging, USB Mass Storage, USB OTG, USB Type-C, Computer Sync, DLNA, Infrared, OTA Sync, Tethering, VoLTE, VoWiFi
- 3.5
- Cellular Bands 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 2G CDMA BC0, 2G CDMA B2, 2G CDMA B3, 2G CDMA B5, 2G CDMA B8, 3G UMTS B1, 3G UMTS B2, 3G UMTS B4, 3G UMTS B5, 3G UMTS B6, 3G UMTS B8, 3G UMTS B19, 4G LTE B1, 4G LTE B2, 4G LTE B3, 4G LTE B4, 4G LTE B5, 4G LTE B8, 4G LTE B18, 4G LTE B19, 4G LTE B26, 4G LTE B34, 4G LTE B38, 4G LTE B39, 4G LTE B40, 4G LTE B41, 4G LTE B42, 5G NR n1, 5G NR n3, 5G NR n5, 5G NR n8, 5G NR n28a, 5G NR n38, 5G NR n40, 5G NR n41, 5G NR n77, 5G NR n78
- 10.0
- Wi-Fi Standards Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax)
- 7.5
- Bluetooth Version Bluetooth 5.2
- 7.0
- Navigation Systems GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS, NavIC
- 10.0
- SIM Configurations Dual Nano-SIM, Dual SIM Dual Standby
- 7.5
Battery & charging
5.2
- Battery Capacity 4,500 mAh
- 7.4
- Fast Charge Power 67 W
- 8.0
- Battery Features Non-Removable, Fast Charging, Rechargeable, Battery Level Indicator
- 0.0
Tap a point on the chart to see what makes it up.
- Design & display
- 7.47
- Performance & hardware
- 6.08
- Camera
- 6.35
- Connectivity
- 7.18
- Battery & charging
- 5.22
- NeoScore rank
- #1331 / 6247
Xiaomi
Technical specifications
Performance
- Processor Model
- Qualcomm Snapdragon 870
- Processor Process Size
- 7 nm
- Graphics GPU
- Qualcomm Adreno 650
- Storage Type
- UFS 3.1
- Maximum CPU Clock
- 3.2 GHz
- Maximum Storage Capacity
- 256 GB
- AnTuTu Score
- 785,648
- Geekbench 6 Single-Core
- 870
- Geekbench 6 Multi-Core
- 3,317
- CPU Description
- Octa-core CPU with 1x 3.2 GHz Kryo 585, 3x 2.42 GHz Kryo 585, and 4x 1.80 GHz Kryo 585 cores.
- Processor Type
- Octa-Core
- 64-Bit Processor
- Yes
- RAM Capacity
- 12 GB
- RAM Type
- LPDDR5
- Expandable Storage
- No
- AnTuTu version
- v10
Design
- Body Colors
- Black, Grey, Blue, Green, Silver
- Body Thickness
- 7.7 mm
- Body Width
- 76 mm
- Body Height
- 163.2 mm
- Weight
- 195 g
- Usable Surface
- 86.6 %
- Body Materials
- Glass, Plastic
- Resistance Features
- IP53
- Foldable
- No
- Rugged Build
- No
Battery
- Battery Capacity
- 4,500 mAh
- Battery Type
- Li-Polymer
- Fast Charge Power
- 67 W
- Battery Features
- Non-Removable, Fast Charging, Rechargeable, Battery Level Indicator
Display
- Display Aspect Ratio
- 20:9
- Display Technology
- AMOLED
- Peak Display Brightness
- 1,300 nits
- Display Diagonal
- 6.67″
- Display Horizontal Resolution
- 1,080 px
- Display Vertical Resolution
- 2,400 px
- Display Pixel Density
- 395 ppi
- Display Refresh Rate
- 120 Hz
- Touch Sampling Rate
- 360 Hz
- Display Contrast Ratio
- 5,000,000 :1
- Display Features
- Hole-Punch Notch, Gorilla Glass 5, HDR10+, Always-On Display, DCI-P3, Capacitive Touch, Multi-Touch, Scratch Resistant, Frameless
- Integrated Projector
- No
Sensors
- Fingerprint Sensor Placement
- Side
Sensor
- Sensor Features
- Fingerprint Sensor, Accelerometer, Gyroscope, Proximity Sensor, Compass, Light Sensor, RGB Sensor, Virtual Proximity Sensing, Cooling System
Software
- Operating System
- Android 12
- OS Family
- Android
- OS Version
- 12
- Direct OS Updates
- No
- Google Services
- No
Connectivity
- SIM Configurations
- Dual Nano-SIM, Dual SIM Dual Standby
- Cellular Bands
- 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 2G CDMA BC0, 2G CDMA B2, 2G CDMA B3, 2G CDMA B5, 2G CDMA B8, 3G UMTS B1, 3G UMTS B2, 3G UMTS B4, 3G UMTS B5, 3G UMTS B6, 3G UMTS B8, 3G UMTS B19, 4G LTE B1, 4G LTE B2, 4G LTE B3, 4G LTE B4, 4G LTE B5, 4G LTE B8, 4G LTE B18, 4G LTE B19, 4G LTE B26, 4G LTE B34, 4G LTE B38, 4G LTE B39, 4G LTE B40, 4G LTE B41, 4G LTE B42, 5G NR n1, 5G NR n3, 5G NR n5, 5G NR n8, 5G NR n28a, 5G NR n38, 5G NR n40, 5G NR n41, 5G NR n77, 5G NR n78
- Cellular Technologies
- GSM, CDMA, HSPA, UMTS, CDMA2000, LTE, 5G
- Wi-Fi Standards
- Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax)
- Wi-Fi Features
- Dual Band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display, MIMO
- Bluetooth Version
- Bluetooth 5.2
- Bluetooth Profiles
- A2DP, LE
- Navigation Systems
- GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS, NavIC
- Connectivity Features
- NFC, USB Charging, USB Mass Storage, USB OTG, USB Type-C, Computer Sync, DLNA, Infrared, OTA Sync, Tethering, VoLTE, VoWiFi
- USB Version
- USB 2.0
- Max. download speed
- 7,500 Mbps
- Max. upload speed
- 3,000 Mbps
Audio
- Audio Features
- Stereo Speakers, Dolby Atmos, Hi-Res Audio, A2DP, LE
Redmi K40S
Camera system
Every physical camera module is shown separately, with its sensor, lens and capture capabilities.
48 MP main camera
- Sensor Features
- Back-Illuminated Sensor
- Sensor Model
- Sony IMX582 Exmor RS
- Resolution
- 48 Mpx
- Sensor Type
- CMOS
- Sensor Size
- 1/2.96″
- Pixel Size
- 0.6 µm
Sensor
- Sensor Features
- Back-Illuminated Sensor
- Sensor Model
- Sony IMX582 Exmor RS
- Resolution
- 48 Mpx
- Sensor Type
- CMOS
- Sensor Size
- 1/2.96″
- Pixel Size
- 0.6 µm
- Pixel Binning
- 4 :1
Video
- Video Recording
- 4K at 30 fps, 1080p at 30 fps, 1080p at 60 fps, 1080p at 120 fps, 720p at 960 fps, Gyro-EIS
- Slow Motion Video
- Yes
- Slow Motion Frame Rate
- 960 fps
Lens
- Aperture
- f/1.8
- Optical Image Stabilization
- Yes
Flash
- Flash Type
- Dual-Tone LED
- Flash LED Count
- 2 LEDs
Features
- Camera Features
- Autofocus, Continuous Autofocus, Phase-Detection Autofocus, Manual Focus, Touch Focus, HDR, Panorama, Geotagging, White Balance Settings, ISO Settings, Manual Exposure, Self-Timer, Burst Mode, Continuous Shooting, Time-Lapse, RAW Capture, Night Mode, Digital Image Stabilization, Optical Stabilization, Ultra Stable Video, 4K Video, LED Flash, Face Detection
8 MP ultrawide camera
- Resolution
- 8 Mpx
- Sensor Type
- CMOS
- Aperture
- f/2.2
Sensor
- Resolution
- 8 Mpx
- Sensor Type
- CMOS
Lens
- Aperture
- f/2.2
2 MP macro camera
- Resolution
- 2 Mpx
- Aperture
- f/2.4
Sensor
- Resolution
- 2 Mpx
Lens
- Aperture
- f/2.4
20 MP front camera
- Sensor Model
- Sony IMX596
- Resolution
- 20 Mpx
- Sensor Type
- CMOS
- Sensor Size
- 1/2″
- Pixel Size
- 0.8 µm
- Pixel Binning
- 4 :1
Sensor
- Sensor Model
- Sony IMX596
- Resolution
- 20 Mpx
- Sensor Type
- CMOS
- Sensor Size
- 1/2″
- Pixel Size
- 0.8 µm
- Pixel Binning
- 4 :1
Video
- Video Recording
- 1080p at 30 fps, 1080p at 120 fps
Product gallery
15Variant details
- Memory
- 6 GB
- Markets
- China
- Storage
- 128 GB
- Market codes
- China
Compare the Xiaomi Redmi K40S
How it stands against other models from the same brand, specification by specification.
- Xiaomi Redmi K40S vs Black Shark 5
- Xiaomi Redmi K40S vs ZTE nubia RedMagic 6
- Xiaomi Redmi K40S vs Realme GT Neo Flash
- Xiaomi Redmi K40S vs Honor 50 Pro
- Xiaomi Redmi K40S vs Xiaomi Redmi Note 11T Pro
- Xiaomi Redmi K40S vs Xiaomi Poco X4 GT
- Xiaomi Redmi K40S vs Xiaomi Black Shark 4 Pro
- Xiaomi Redmi K40S vs Xiaomi Poco X5 Pro
Available variants
Prices No stores
→