Xiaomi Redmi K40
Price in Bangladesh
Unofficial ৳36,500 Available in shops · shop warranty
Variant
Prices checked 2 March 2026. Official or unofficial: which to buy?
Key specifications
- Display
- 6.67″ Super AMOLED, 120Hz
- Chipset
- Qualcomm SM8250-AC Snapdragon 870 5G (7 nm)
- RAM
- 8GB
- Storage
- 256GB
- Rear camera
- 48MP Triple
- Selfie camera
- 20MP
- Battery
- 4,520mAh
- Charging
- 33W
- Network
- 5G
- OS
- Android v11
- Weight
- 196g · 7.8mm
Xiaomi Redmi K40 overview
The Xiaomi Redmi K40 is a 5G smartphone from Xiaomi, released in March 2021. It comes with a 6.67-inch Super AMOLED display with a 120Hz refresh rate, the Qualcomm SM8250-AC Snapdragon 870 5G (7 nm) chipset, 8GB of RAM and 256GB of storage. For photography there is a 48MP triple rear camera and a 20MP selfie camera. A 4,520mAh battery powers the phone, with 33W fast charging. It is not officially sold in Bangladesh yet; the unofficial market price starts at ৳36,500.
What's good
- Smooth everyday performance
- 120Hz smooth display
- Super AMOLED panel
- 5G network support
- NFC
What's not
- No 3.5mm headphone jack
- Not officially available in Bangladesh
Xiaomi Redmi K40 full specifications
Launch
| Brand | Xiaomi |
|---|---|
| Model | Redmi K40 |
| Device Type | Smartphone |
| Release Date | 04 March 2021 |
| Status | Available |
Platform
| Operating System | Android |
|---|---|
| OS Version | v11 |
| User Interface | MIUI |
| 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) |
| CPU Cores | Octa-core |
| Architecture | 64 bit |
| Fabrication | 7 nm |
| GPU | Adreno 650 |
Display
| Display Type | Super AMOLED |
|---|---|
| Screen Size | 6.67 inches (16.94 cm) |
| Resolution | 1080x2400 px (FHD+) |
| Aspect Ratio | 20:9 |
| Pixel Density | 395 ppi |
| Screen to Body Ratio | 85.88 % |
| Screen Protection | Corning Gorilla Glass 5 |
| Bezel-less Display | Yes with punch-hole display |
| Touch Screen | Capacitive Touchscreen, Multi-touch |
| Brightness | 1300 nits |
| HDR 10 / HDR + support | HDR10+ |
| Refresh Rate | 120Hz |
| Notch | Punch-hole |
Rear Camera
| Camera Setup | Three |
|---|---|
| Resolution | 48 MP f/1.79, Wide Angle, Primary Camera, 8 MP f/2.2, Ultra-Wide Angle Camera, 5 MP f/2.4, Macro Camera |
| Sensor | IMX582, Exmor-RS CMOS Sensor |
| Autofocus | Yes |
| Flash | LED Flash |
| Image Resolution | 8000 x 6000 Pixels |
| Settings | Exposure compensation, ISO control |
| Zoom | Digital Zoom |
| Shooting Modes | Continuous Shooting, High Dynamic Range mode (HDR) |
| Aperture | f/1.8 |
| Camera Features | Auto Flash, Face detection, Touch to focus |
| Video Recording | 3840x2160, 1920x1080 |
| Video FPS | 30 fps |
Selfie Camera
| Camera Setup | Single |
|---|---|
| Resolution | 20 MP f/2.5, Wide Angle, Primary Camera |
| Video Recording | 1920x1080 |
| Video FPS | 30 fps |
| Aperture | f/2.5 |
Body & Design
| Height | 163.7 mm |
|---|---|
| Width | 76.4 mm |
| Thickness | 7.8 mm |
| Weight | 196 grams |
| Colors | Black, White, Aurora |
Battery
| Battery type | Li-Poly (Lithium Polymer) |
|---|---|
| Capacity | 4520 mAh |
| Quick Charging | 33W wired, PD3.0, QC3, 100% in 52 min (advertised) |
| Placement | Non-removable |
| USB Type-C | USB Type-C 2.0 |
Memory
| Internal Storage | 256 GB |
|---|---|
| Storage Type | UFS 3.1 |
| USB OTG | Yes |
| RAM | 8GB |
| RAM Type | LPDDR5 |
Connectivity
| Network | 2G, 3G, 4G, 5G |
|---|---|
| SIM Slot | Dual SIM, GSM+GSM |
| SIM Size | SIM1: Nano, SIM2: Nano |
| EDGE | Available |
| GPRS | Available |
| VoLTE | Yes |
| Speed | HSPA, LTE, 5G |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct |
| Bluetooth | 5.1, A2DP, LE |
| GPS | GPS (L1+L5), GLONASS (G1), BDS (B1I+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC |
| Infrared | Yes |
| Wi-fi Hotspot | Yes |
| NFC | Yes |
| USB | Mass storage device, USB charging |
Sensors & Security
| Light Sensor | Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope |
|---|---|
| Fingerprint Sensor | Yes |
| Finger Sensor Position | Side-Mounted |
| Face Unlock | Yes |
Audio & Media
| Loudspeaker | Yes, with stereo speakers |
|---|---|
| Audio Jack | USB Type-C |
| Video | 4K@30fps, 1080p@30/60/120/240/960fps, gyro-EIS |
More
| Made By | China |
|---|---|
| Features | Accelerometer, gyro, proximity, compass, color spectrum |
Specifications may differ by region or variant. Spotted a mistake? Let us know.
Frequently asked questions
What is the price of Xiaomi Redmi K40 in Bangladesh?
Xiaomi Redmi K40 is available in the unofficial market from ৳36,500.
Does Xiaomi Redmi K40 support 5G?
Yes, Xiaomi Redmi K40 supports 5G networks.
How big is the battery of Xiaomi Redmi K40?
Xiaomi Redmi K40 has a 4520mAh battery with 33W fast charging.
Which processor does Xiaomi Redmi K40 use?
Xiaomi Redmi K40 is powered by the Qualcomm SM8250-AC Snapdragon 870 5G (7 nm) (Octa-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585)).
When was Xiaomi Redmi K40 released?
Xiaomi Redmi K40 was released in March 2021.
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