Redmi K40

Technology

GSM / CDMA / HSPA / CDMA2000 / LTE / 5G

2G bands

GSM 850 / 900 / 1800 / 1900

CDMA2000 1x

3G bands

HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100

4G bands

1, 2, 3, 4, 5, 7, 8, 18, 19, 26, 28, 34, 38, 39, 40, 41, 42

5G bands

1, 3, 28, 41, 77, 78 SA/NSA/Sub6

Speed

HSPA, LTE, 5G

Announced

2021, February 25

Status

Available. Released 2021, March 04

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)

SIM

Nano-SIM + Nano-SIM

Type

Super AMOLED, 120Hz, HDR10+, 1300 nits (peak)

Size

6.67 inches, 107.4 cm2 (~85.9% screen-to-body ratio)

Resolution

1080 x 2400 pixels, 20:9 ratio (~395 ppi density)

Protection

Corning Gorilla Glass 5

OS

Android 11, MIUI 12

Chipset

Qualcomm SM8250-AC Snapdragon 870 5G (7 nm)

CPU

Octa-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585)

GPU

Adreno 650

Card slot

No

Internal

128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM

UFS 3.1

Triple

48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF<br> 8 MP, f/2.2, 119˚ (ultrawide)<br> 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

Single

20 MP, f/2.5, (wide), 1/3.4", 0.8µm

Features

HDR

Video

1080p@30fps, 720p@120fps

Loudspeaker

Yes, with stereo speakers

3.5mm jack

No

24-bit/192kHz Hi-Res audio

WLAN

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

NFC

Yes

Infrared port

Yes

Radio

No

USB

USB Type-C 2.0, OTG

Sensors

Fingerprint (side-mounted), accelerometer, gyro, proximity, compass

Type

Li-Po 4520 mAh

Charging

33W wired, PD3.0, QC3, 100% in 52 min

Colors

Black, White, Aurora

Models

M2012K11AC