| Key Specs |
| Display | 6.67-inch | 6.67-inch |
| Processor | Qualcomm Snapdragon 870 | Qualcomm Snapdragon 860 |
| Front Camera | 20-megapixel | 20-megapixel |
| Rear Camera | 64-megapixel + 8-megapixel + 2-megapixel | 48-megapixel + 8-megapixel |
| RAM | 6GB, 8GB, 12GB | 6GB, 8GB |
| Storage | 128GB, 256GB | 128GB, 256GB |
| Battery Capacity | 4500mAh | 5160mAh |
| OS | Android 12 | Android 11 |
| Resolution | 1080×2400 pixels | 1080×2400 pixels |
| General |
| Brand | Poco | Poco |
| Model | F4 5G | X3 Pro |
| Release date | June 23, 2021 | March 22, 2021 |
| Launched in India | Yes | Yes |
| Form factor | Touchscreen | Touchscreen |
| Dimensions (mm) | 163.20 x 75.95 x 7.70 | 165.30 x 76.80 x 9.40 |
| Weight (g) | 195.00 | 215.00 |
| Battery capacity (mAh) | 4500 | 5160 |
| Fast charging | Proprietary | Proprietary |
| Colours | Nebula Green, Night Black | Golden Bronze, Graphite Black, Steel Blue |
| Body type | – | Polycarbonate |
| Wireless charging | – | No |
| Display |
| Refresh Rate | 120 Hz | – |
| Resolution Standard | FHD+ | – |
| Screen size (inches) | 6.67 | 6.67 |
| Touchscreen | Yes | Yes |
| Resolution | 1080×2400 pixels | 1080×2400 pixels |
| Protection type | Gorilla Glass | Gorilla Glass |
| Aspect ratio | 20:9 | 20:9 |
| Pixels per inch (PPI) | 395 | – |
| Hardware |
| Processor | octa-core | 2.96GHz octa-core |
| Processor make | Qualcomm Snapdragon 870 | Qualcomm Snapdragon 860 |
| RAM | 6GB, 8GB, 12GB | 6GB, 8GB |
| Internal storage | 128GB, 256GB | 128GB, 256GB |
| Expandable storage | No | Yes |
| Expandable storage type | – | microSD |
| Expandable storage up to (GB) | – | 1000 |
| Dedicated microSD slot | – | No |
| Camera |
| Rear camera | 64-megapixel (f/1.8, 0.7-micron) + 8-megapixel + 2-megapixel | 48-megapixel (f/1.79) + 8-megapixel (f/2.2) |
| No. of Rear Cameras | 3 | 4 |
| Rear autofocus | Yes | Yes |
| Rear flash | Yes | Yes |
| Front camera | 20-megapixel (f/2.4) | 20-megapixel |
| No. of Front Cameras | 1 | 1 |
| Rear third camera attr | – | (f/2) |
| Software |
| Operating system | Android 12 | Android 11 |
| Skin | MIUI 13 | MIUI 12 for Poco |
| Connectivity |
| Wi-Fi | Yes | Yes |
| Wi-Fi standards supported | 802.11 a/b/g/n/ac | 802.11 a/b/g/n/ac |
| GPS | Yes | Yes |
| Bluetooth | Yes, v 5.20 | Yes, v 5.00 |
| NFC | Yes | No |
| Infrared | Yes | Yes |
| USB Type-C | Yes | Yes |
| Number of SIMs | 2 | 2 |
| Headphones | – | 3.5mm |
| Sim 1 |
| SIM Type | Nano-SIM | Nano-SIM |
| GSM/CDMA | GSM | GSM |
| 3G | Yes | Yes |
| 4G/ LTE | Yes | Yes |
| 5G | Yes | No |
| Sim 2 |
| SIM Type | Nano-SIM | Nano-SIM |
| GSM/CDMA | GSM | GSM |
| 3G | Yes | Yes |
| 4G/ LTE | Yes | Yes |
| 5G | Yes | No |
| Sensors |
| Fingerprint sensor | Yes | Yes |
| Compass/ Magnetometer | Yes | Yes |
| Proximity sensor | Yes | Yes |
| Accelerometer | Yes | Yes |
| Ambient light sensor | Yes | Yes |
| Gyroscope | Yes | – |
| Face unlock | – | Yes |
| In-Display Fingerprint Sensor | – | No |
