| Hardware and OS | Blackview Oscal C20 | |
| Operating system | Android 11 Red Velvet Cake | |
| Processor | Quad-Core (4x Cortex A7 1.3 GHz) | |
| Chipset | Spreadtrum SC7731E (28 nm) | |
| Internal memory | 1GB 32GB | |
| GPU | ARM Mali-400 MP1 | |
| Display | Blackview Oscal C20 | other phones |
| Type | LCD IPS | |
| Size | 6.09" inc | |
| Resolution | 720 x 1560 px | |
| Display colors | 16M | |
| Screen area | cm2 | |
| Screen format | 19.5:9 (height:width) | |
| Screen to body ratio | 79% | |
| PPI /points per inch/ | 282 PPI | |
| Touchscreen | capacitive touchscreen | |
| Connectivity | Blackview Oscal C20 | other phones |
| Network | 2G / 3G / | |
| NFC | No | |
| Edge | Yes | |
| Bluetooth | Bluetooth 4.2, A2DP, LE | |
| SIM card | Dual SIM, dual stand-by (Nano SIM Nano SIM) | |
| GPRS | Yes | |
| GPS | GPS, A-GPS, GLONASS, Beidou | |
| Wi-Fi | 802.11b, 802.11g, 802.11n,Wi-Fi Hotspot | |
| USB | Yes | |
| Camera | Blackview Oscal C20 | other phones |
| Rear camera, main | 5 MP, Single | |
| Camera specs | 5 MP, ?/ 2.0, (wide), 1.12 µm | |
| Functions | LED flash | |
| Video | 1080p video | |
| Front camera, selfie | 2 MP, Single | |
| Specifications | 2 MP, ?/ 2.2, 1.75 µm | |
| Multimedia | Blackview Oscal C20 | other phones |
| Headphone jack | Yes | |
| Radio | Yes | |
| Design | Blackview Oscal C20 | other phones |
| Dimensions (HxWxD) | 155.4 x73.5 x 9.5 mm | 6.12 x 2.89 x 0.37 in | |
| Weight | 156 g | 5.5 oz | |
| Colors | Black, Blue, Red, Purple | |
| Body build | Plastic | |
| Battery | Blackview Oscal C20 | other phones |
| Battery | 3380 mAh, Li-Polymer, Removable | |
| Other features | Blackview Oscal C20 | other phones |
| Sensors | Proximity, Accelerometer , Infrared port | |
