| Hardware and OS | Oppo A57 5G | |
| Operating system | Android v11 | |
| Processor | Octa-core (4x2.2 GHz Cortex-A76 & 4x2.0 GHz Cortex-A55) | |
| Chipset | MediaTek MT6833 Dimensity 700 5G (7 nm) | |
| Internal Storage | 128 GB | |
| GPU | Mali-G57 MC2 | |
| RAM | 6 GB | |
| Camera | Oppo A57 5G | other phones |
| Main camera | 13 MP 2 MP 2 MP | |
| Autofocus | Yes | |
| Camera features | Digital Zoom, Auto Flash, Face detection, Touch to focus | |
| Flash | Yes, LED Flash | |
| Front camera | 8 MP | |
| Front camera resolution | 8 MP, f/2.0, (wide) | |
| Video recording | Yes | |
| Connectivity | Oppo A57 5G | other phones |
| Bluetooth | Yes, v5.1 | |
| SIM size | SIM1: Nano, SIM2: Nano | |
| Dual SIM | Dual SIM, GSM GSM | |
| GPS | with A-GPS | |
| Network support | 5G , 4G , 3G, 2G | |
| USB connectivity | Mass storage device, USB charging | |
| WI-FI | Yes, Wi-Fi 802.11, b/g/n | |
| Multimedia | Oppo A57 5G | other phones |
| Audio jack | 3.5 MM | |
| Loudspeaker | Yes | |
| Battery | Oppo A57 5G | other phones |
| Capacity | 5000 mAh | |
| Type | Lithium-ion Polymer | |
| User replaceable | No | |
| Design | Oppo A57 5G | other phones |
| Colors | Black | |
| Height | 163.9 mm | |
| Width | 75.1 mm | |
| Thickness | 8.4 mm | |
| Weight | 186 grams | |
| Features | Oppo A57 5G | other phones |
| Fingerprint sensor position | Side | |
| Fingerprint sensor | Yes | |
| Other sensors | Accelerometer, Gyro, Proximity, Compass | |
