Xiaomi Redmi K40
Display6.67 inches Super AMOLED
ChipsetQualcomm Snapdragon 870
Main Camera48 MP
Battery4520 mAh, Li-Po Battery
Memory6 GB RAM, 128 GB
OSAndroid v11
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Qualcomm Snapdragon 870
AnTuTu 11: 1,010,069 · Geekbench 6: 1298 / 352044
Full specifications
General
Model
Redmi K40
Sim Type
Dual Sim, GSM+GSM
Dual Sim
Yes
Sim Size
Nano+Nano SIM
Device Type
Smartphone
Release Date
February 25, 2021
Design
Dimensions
76.4 x 163.7 x 7.8 mm
Weight
196 g
Display
Type
Color Super AMOLED Screen (16M Colors)
Touch
Yes
Size
6.67 inches, 1080 x 2400 pixels, 120 Hz
Aspect Ratio
20:9
PPI
~ 395 PPI
Screen to Body Ratio
~ 85.9%
Glass Type
Corning Gorilla Glass 5
HDR Support
Yes, HDR10+
Features
HDR10+
Notch
Yes, Punch Hole
Memory
RAM
6 GB
Storage
128 GB
Storage Type
UFS 3.1
Connectivity
GPRS
Yes
EDGE
Yes
3G
Yes
4G
Yes
5G
Yes
VoLTE
Yes, Dual Stand-By
Wifi
Yes, with wifi-hotspot
Bluetooth
Yes, v5.1, A2DP, LE, aptX HD
USB
Yes, USB-C v2.0
USB Features
USB on-the-go, USB Charging
IR Blaster
Yes
Extra
GPS
Yes, with dual-band A-GPS, GLONASS, BDS, GALILEO, QZSS
Fingerprint Sensor
Yes, Side
Face Unlock
Yes
Sensors
Accelerometer, Gyro, Proximity, Compass
3.5mm Headphone Jack
No
NFC
Yes
Camera
Rear Camera
48 MP ƒ/1.8 (Wide Angle) · 8 MP ƒ/2.2 (Ultra Wide) · 5 MP ƒ/2.4 (Macro) · Macro
Auto Focus
Yes
Features
HDR, Panorama
Video Recording
4K @ 30 fps UHD, 1080p @ 30 fps FHD
Flash
Yes, LED
Front Camera
20 MP (Wide Angle) · Punch Hole
Front Video Recording
1080p @ 30 fps FHD, 720p @ 120 fps HD
Front Camera Features
HDR
Technical
OS
Android v11
Chipset
Qualcomm Snapdragon 870
CPU
3.2 GHz, Octa Core Processor
Core Details
1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585
GPU
Adreno 650
Java
No
Browser
Yes, supports HTML5
Multimedia
Email
Yes
Music
Yes
Video
Yes
FM Radio
No
Document Reader
Yes
Battery
Type
Non-Removable Battery
Size
4520 mAh, Li-Po Battery
Fast Charging
Yes, 33W Fast Charging
Specifications compiled from Smartprix. Last updated 2026-09-29.
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