What is the display refresh rate of the Xiaomi Redmi K40?

The Xiaomi Redmi K40 features a 120Hz refresh rate on its Super AMOLED display.

Does the Xiaomi Redmi K40 support 5G connectivity?

Yes, the Xiaomi Redmi K40 supports 5G bands 1, 3, 28, 41, 77, and 78.

What is the battery capacity and charging speed of the Xiaomi Redmi K40?

The Xiaomi Redmi K40 has a 4520mAh battery with 33W wired fast charging that can reach 100% in 52 minutes.

What processor does the Xiaomi Redmi K40 use?

The Xiaomi Redmi K40 is powered by the Qualcomm Snapdragon 870 5G chipset.

Does the Xiaomi Redmi K40 have a headphone jack?

No, the Xiaomi Redmi K40 does not have a 3.5mm headphone jack.

What are the storage and RAM options available for the Xiaomi Redmi K40?

The Xiaomi Redmi K40 is available in 128GB with 6GB or 8GB RAM, and 256GB with 8GB or 12GB RAM, all using UFS 3.1 storage.

What is the main camera setup on the Xiaomi Redmi K40?

The Xiaomi Redmi K40 has a triple camera system: 48MP wide, 8MP ultrawide, and 5MP macro camera.

Xiaomi Redmi K40

Name: Xiaomi Redmi K40
Brand: Xiaomi
Price: 36500.00 BDT
Availability: InStock

Brand: Xiaomi

(0/5)

Last Updated: Mar 10, 2026

Price in Bangladesh

৳36,500

Prices shown are launch prices; actual prices may change over time.

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Available Variants

8GB / 256GB

Unofficial

৳36,500

Full Specifications

Network

Technology	GSM / CDMA / HSPA / CDMA2000 / LTE / 5G
2G bands	GSM 850 / 900 / 1800 / 1900, CDMA 800
3G bands	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100, CDMA2000 1x
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
Speed	HSPA, LTE, 5G

Launch

Announced	2021, February 25
Status	Available. Released 2021, March 04

Body

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

Display

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

Hardware & Software

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

Memory & Storage

Card slot	No
Internal	128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM, UFS 3.1

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)
Features	Color spectrum sensor, LED flash, HDR, panorama
Video	4K@30fps, 1080p@30/60/120/240/960fps, gyro-EIS

Selfie Camera

Single	20 MP, f/2.5, (wide), 1/3.4", 0.8µm
Features	HDR
Video	1080p@30fps, 720p@120fps

Sound

Loudspeaker	Yes, with stereo speakers
3.5mm jack	No
Audio Quality	24-bit/192kHz Hi-Res audio

Connectivity

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

Features

Sensors

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

Battery

Type	Li-Po 4520 mAh
Charging	33W wired, PD3.0, QC3, 100% in 52 min

Disclaimer: The price and specifications shown may be different from the actual product. We cannot guarantee that the information on this page is 100% correct. Please check with the retailer before purchasing.

Frequently Asked Questions

Description

The Xiaomi Redmi K40 is a 2021 mid-range smartphone featuring a 6.67-inch Super AMOLED display with 120Hz refresh rate and HDR10+ support, powered by the Qualcomm Snapdragon 870 5G chipset with up to 12GB RAM and 256GB UFS 3.1 storage. It sports a triple camera system with a 48MP main sensor, 8MP ultrawide, and 5MP macro camera, plus a 20MP front camera. The device includes a 4520mAh battery with 33W fast charging, stereo speakers with Hi-Res audio, and connectivity options like Wi-Fi 6, Bluetooth 5.1, NFC, and infrared port. It runs Android 11 with MIUI 12 and features a side-mounted fingerprint sensor.