| Hardware and OS | OPPO F21 Pro | |
| Operating System | Android v10 | |
| Processor | 2.2 GHz, Octa Core Processor | |
| Chipset | MediaTek Helio P95 | |
| Cores | 2.2 GHz, Dual core, Cortex A75 2 GHz, Hexa Core, Cortex A55 | |
| RAM | 8 GB | |
| Internal Memory | 128 GB | |
| Memory Card Slot | Yes, upto 256 GB | |
| Graphics | PowerVR GM9446 | |
| Dual Sim | Yes | |
| Sim Size | Nano Nano SIM | |
| Sim Type | Dual Sim, GSM GSM | |
| Display | OPPO F21 Pro | other phones |
| Screen Size | 6.5 inches, 1080 x 2400 pixels | |
| Display Type | Color Super AMOLED screen (16M) | |
| Pixel Density | ~405 PPI | |
| Touch Screen | Yes, with Multitouch | |
| Display aspect ratio | 20:9 | |
| Connectivity | OPPO F21 Pro | other phones |
| 3G Network | Yes | |
| 4G Network | Yes | |
| Bluetooth | Yes, v5.0 | |
| EDGE | Yes | |
| GPRS | Yes | |
| USB | Yes, USB-C | |
| USB Features | USB on-the-go, USB Charging | |
| VoLTE | Yes, Dual Stand-By | |
| Wifi | Yes, with wifi-hotspot | |
| Multimedia | OPPO F21 Pro | other phones |
| Email | Yes | |
| FM Radio | No | |
| Music | Yes | |
| Video | Yes | |
| Browser | Yes | |
| Java | No | |
| Battery | OPPO F21 Pro | other phones |
| Battery capacity | 4500 mAh, Li-Po Battery | |
| Type | Non-Removable Battery | |
| Fast Charging | 65W Fast Charging | |
| Other | OPPO F21 Pro | other phones |
| Sensors | Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope | |
| Fingerprint Sensor | Yes, In Display | |
| Face Unlock | Yes | |
| Features | Digital Zoom, Auto Flash, Face detection, Touch to focus | |
