Xiaomi
Xiaomi Redmi K40
Experience cutting-edge technology with premium design and powerful performance.
📅 Available. Released 2021, March 04
🤖 Android 11, MIUI 12
💾 128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM
Network & Connectivity
Technology
GSM / CDMA / HSPA / CDMA2000 / LTE / 5G
2 G bands
GSM 850 / 900 / 1800 / 1900
3 G bands
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4 G bands
1, 2, 3, 4, 5, 7, 8, 18, 19, 26, 28, 34, 38, 39, 40, 41, 42
5 G bands
1, 3, 28, 41, 77, 78 SA/NSA/Sub6
Speed
HSPA, LTE, 5G
Display & Screen
Type
Super AMOLED, 120Hz, HDR10+, 1300 nits (peak)
Size
6.67 inches, 107.4 cm 2 (~85.9% screen-to-body ratio)
Resolution
1080 x 2400 pixels, 20:9 ratio (~395 ppi density)
Protection
Corning Gorilla Glass 5
Platform & Performance
O S
Android 11, MIUI 12
Chipset
Qualcomm SM8250-AC Snapdragon 870 5G (7 nm)
C P U
Octa-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585)
G P U
Adreno 650
Memory & Storage
Card slot
No
Internal
128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM
Main Camera
Triple
48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF | 8 MP, f/2.2, 119˚ (ultrawide) | 5 MP, f/2.4, 50mm (macro), 1/5.0", 1.12µm
Features
Color spectrum sensor, LED flash, HDR, panorama
Video
4K@30fps, 1080p@30/60/120/240/960fps, gyro-EIS
Modules
48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF | 8 MP, f/2.2, 119˚ (ultrawide) | 5 MP, f/2.4, 50mm (macro), 1/5.0", 1.12µm
Selfie Camera
Single
20 MP, f/2.5, (wide), 1/3.4", 0.8µm
Features
HDR
Video
1080p@30fps, 720p@120fps
Modules
20 MP, f/2.5, (wide), 1/3.4", 0.8µm
Battery & Charging
Type
Li-Po 4520 mAh
Charging
33W wired, PD3.0, QC3, 100% in 52 min
Features & Sensors
Sensors
Fingerprint (side-mounted), accelerometer, gyro, proximity, compass
Audio & Sound
Loudspeaker
Yes, with stereo speakers
3.5mm jack
No
Build & Design
Dimensions
163.7 x 76.4 x 7.8 mm (6.44 x 3.01 x 0.31 in)
Weight
196 g (6.91 oz)
S I M
Nano-SIM + Nano-SIM
Communication
W L A N
Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
Bluetooth
5.1, A2DP, LE
Positioning
GPS (L1+L5), GLONASS (G1), BDS (B1I+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC
N F C
Yes
Infrared port
Yes
Radio
No
U S B
USB Type-C 2.0, OTG
Launch Information
Announced
2021, February 25
Status
Available. Released 2021, March 04
Miscellaneous
Colors
Black, White, Aurora
Models
M2012K11AC