Redmi K40S

Description

Launch date March 17, 2022
Use scenarios 5G mobile phone>, 4G mobile phone>, 3G mobile phone>, smart phone>
Body material Plastic middle frame, glass back cover>
Body color Bright black, silver trace, dim light, magic mirror
Fingerprint recognition Side fingerprint recognition>
Face recognition Support
Appearance
Length 163.2mm
Width 75.95mm
Thickness 7.7mm
Weight 195g
Hardware
CPU model Qualcomm Snapdragon 870 More Qualcomm Snapdragon 870 mobile phones>, mobile phone performance ranking>
CPU frequency 3.2Ghz A77*1+2.4GHz A77*3+1.8GHz A55*4
CPU core number Octa-core>
GPU model Qualcomm Adreno650
RAM capacity 8GB>Game runs smoothly
RAM storage type LPDDR5>
ROM capacity 128GB>26,000 photos 11,000 songs
ROM storage type UFS 3.1>
Memory card does not support capacity expansion>
Factory system kernel Android 12
Operating system MIUI 13
Vibration motor X-axis linear motor
Speaker Stereo dual speakers
Screen
Screen size 6.67 inches
Screen type Full screen (center hole screen), straight screen>
Screen ratio 20:9
Resolution 2400x1080px
Screen material AMOLED (E4)>
Screen refresh rate 120Hz>
Screen manufacturer Samsung
Pixel density 395ppi
Screen ratio 85.88%
HDR technology HDR 10+>
Contrast ratio 5000000:1
Screen brightness 900nits global brightness, 1300nits peak brightness
Screen technology Corning fifth-generation Gorilla Glass
Camera
Total number of cameras 4
Camera name Rear main camera: main camera
Rear ultra-wide-angle lens: ultra-wide-angle lens
Rear telephoto macro lens: telephoto macro lens
Front main camera: main camera
Pixels Rear main camera: 48 million pixels
Rear ultra-wide-angle lens: 8 million pixels
Rear telephoto macro lens: 2 million pixels
Front main camera: 20 million pixels
Aperture f/1.79
Sensor size 1/2
Anti-shake function Rear main camera: OIS optical image stabilization
Rear telephoto macro lens: OIS optical image stabilization
Wide angle 119°
Rear video shooting 4K (3840×2160, 30 frames/second) video recording 1080p (1920×1080, 60 fps, 30 fps) video recording 720p (1280×720, 30 fps) video recording slow motion 1080p (1920×1080, 960 fps, 240 fps, 120 fps) video recording slow motion 720p (1280×720, 960 fps, 240 fps, 120 fps) video recording
Front-facing video recording 1080p (1920×1080, 30 fps) video recording 720p (1280×720, 30 fps) video recording slow motion 720p (1280×720, 120 fps) video recording
Sensor type Rear: 1/2-inch CMOS
Flash LED fill light>
Network and connection
Network type 5G>, 4G>, 3G>
Network band 2G: GSM 850/900/1800/1900MHz 2G: CDMA 1X BC0 3G: WCDMA B1/B2/B4/B5/B6/B8/B19 3G: CDMA EVDO BC0 4G: FDD-LTE B1/B2/B3/B4/B5/B7/B8/B18/B19/B26/B28A 4G: TDD-LTE B34/B38/B39/B40/B41/B42 5G: n1/n3/n28A/n41/n77/n78
SIM card type Dual SIM (Nano SIM card)>
WLAN function Dual-band WiFi, WiFi6 (IEEE 802.11 a/b/g/n/ac/ax), 2×2 MIMO, HE160, 1024 QAM, 8×8 Sounding for MU-MIMO
Bluetooth Bluetooth 5.2, supports AAC/LDAC/LHDC
NFC supports NFC (after activation in Tianxing Financial Wallet App, double-click the power button to use Xiaomi Bus, Mi Pay, door card, eID, electronic car key and other functions for public transportation, mobile payment, mobile phone door opening and other scenarios)
Infrared function Support
Body interface USB Type-C interface
Battery and battery life
Battery type Non-removable battery
Battery capacity 4500mAh large battery
Wired charging 67w
Functions and services
Sensors 360° ambient light sensor, acceleration sensor, gyroscope, electronic compass, color temperature sensor, linear motor, infrared remote control, ultrasonic distance sensor
Mobile phone accessories
Packing list Mobile phone host x1 Power adapter x1 USB Type-C data cable x1 Mobile phone protective case x1 Film (already covered on the screen) x1 Pin x1 Instruction manual (including three-guarantee certificate) x1
Warranty information
Warranty policy National warranty, enjoy three guarantees service
Warranty period 1 year
Warranty notes Host 1 year, battery 1 year, charger 1 year

Details From the date of purchase (based on the purchase invoice), if there is a quality problem or failure, with the quality inspection certificate of the manufacturer’s repair center or special repair point, you can enjoy return within 7 days, exchange within 15 days, and enjoy free warranty and other three guarantees within the warranty period for more than 15 days! Note: For users who purchase mobile phone accessories separately, please keep the outer packaging of the accessories and the original invoice intact. If you cannot provide the above certificates, you will not be able to carry out normal accessory warranty or replacement.