| Hardware and OS | POCO C40 | |
| Operating System | Android v11 | |
| Custom UI | MIUI | |
| Processor | Octa core (2 GHz, Quad core, Cortex A55 1.5 GHz, Quad core) | |
| Internal Memory | 32 GB | |
| External memory | Yes, Up to 1 TB | |
| RAM | 3 GB | |
| GPU | Mali-G57 | |
| Display | POCO C40 | other phones |
| Type | IPS LCD | |
| Size | 6.71 inches (17.04 cm) | |
| PPI /points per inch/ | 268 ppi | |
| Touchscreen | Yes, Capacitive Touchscreen, Multi-touch | |
| Screen Protection | Corning Gorilla Glass, | |
| Brightness | 400 nits | |
| Connectivity | POCO C40 | other phones |
| 4G Bands | TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 1700(band 4) / 850(band 5) / 800(band 20) | |
| Network Support | 4G, 3G, 2G | |
| NFC | No | |
| SIM card | SIM1: Nano, SIM2: Nano | |
| SIM Slot(s) | Dual SIM, GSM GSM | |
| Bluetooth | Yes, v5.0 | |
| GPS | Yes with A-GPS, Glonass | |
| USB Connectivity | Mass storage device, USB charging | |
| VoLTE | Yes | |
| Wi-Fi | Yes, Wi-Fi 802.11, a/ac/b/g/n | |
| Camera | POCO C40 | other phones |
| Main camera | 13 MP f/2.2, Primary Camera, 2 MP f/2.4, Depth Camera, | |
| Camera Setup | Dual | |
| Autofocus | Yes, Phase Detection autofocus | |
| Camera Features | Digital Zoom, Auto Flash, Face detection, Touch to focus | |
| Flash | Yes, LED Flash | |
| Image Resolution | 4128 x 3096 Pixels | |
| Video Recording | 1920x1080 @ 30 fps, 1280x720 @ 30 fps | |
| Selfie camera | 5 MP f/2.2, Primary Camera, | |
| Multimedia | POCO C40 | other phones |
| Headphone jack | 3.5 mm | |
| FM Radio | Yes | |
| Loudspeaker | Yes | |
| Design | POCO C40 | other phones |
| Colours | Power Black, Coral Green, POCO Yellow | |
| Ruggedness | Dust proof | |
| Waterproof | Yes, Water resistant, IP52 | |
| Width | 76.5 mm | |
| Height | 169.5 mm | |
| Thickness | 9.1 mm | |
| Weight | 204 grams | |
| Battery | POCO C40 | other phones |
| Capacity | 6000 mAh | |
| Type | Li-Polymer | |
| Removable | No | |
| Quick Charging | Yes, Fast, 18W | |
| USB Type-C | Yes | |
| Other features | POCO C40 | other phones |
| Fingerprint Sensor | Yes | |
| Fingerprint Sensor Position | Rear | |
| Other Sensors | Light sensor, Proximity sensor, Accelerometer | |
