| Hardware and OS Oppo A31 |
| Operating system: | Android 9.0 (Pie); ColorOS 6.1 |
| Processor: | Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53) |
| Chipset: | Mediatek MT6765V/CB Helio P35 (12nm) |
| GPU: | PowerVR GE8320 |
| Internal memory: | 128GB 4GB RAM |
| External memory: | microSDXC (dedicated slot) |
| Display Oppo A31 |
| Type: | IPS LCD |
| Size: | 6.5" inc |
| Resolution: | 720 x 1600 px |
| Touchscreen: | capacitive touchscreen |
| Screen-to-Body Ratio: | 82.4% |
| Display area: | 102.0 cm2 |
| Display aspect ratio: | 20:9 (height:width) |
| Pixel Density: | 270 PPI |
| Colors: | 16M |
| Other: | 480 nits typ. brightness |
| Connectivity Oppo A31 |
| 2G Network: | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network: | HSDPA 850 / 900 / 2100 |
| 4G Network: | LTE (unspecified) |
| Wi-Fi: | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot |
| Network: | GSM / HSPA / LTE |
| SIM card: | Dual SIM (Nano-SIM, dual stand-by) |
| Bluetooth: | 5.0, A2DP, LE |
| Edge: | Yes |
| GPRS: | Yes |
| GPS: | Yes, with A-GPS, BDS |
| Speed: | HSPA 42.2/5.76 Mbps, LTE-A |
| USB: | microUSB 2.0, USB On-The-Go |
| Camera Oppo A31 |
| Main camera: | 12 MP,
Triple |
| Specs: | 12 MP, f/1.8, (wide), PDAF
-2 MP, f/2.4, 27mm (macro), 1/5.0', 1.75µm
-2 MP, f/2.4, (depth) |
| Features: | LED flash, HDR, panorama |
| Features: | HDR |
| Video: | 1080p@30fps |
| Selfie camera: | 8 MP,
Single |
| Specs: | 8 MP, f/2.0 |
| Video: | 1080p@30fps |
| Multimedia Oppo A31 |
| 3.5 mm Jack: | Yes |
| Radio: | FM radio |
| Design Oppo A31 |
| Colors: | Fantasy White, Mystery Black |
| Body build: | Glass front, plastic back, plastic frame |
| Dimensions: | 163.9 x 75.5 x 8.3 mm |
| Weight: | 180 g |
| Battery Oppo A31 |
| Battery capacity: | 4230 mAh, Non-removable Li-Po |
| Other Oppo A31 |
| Release date: | 2020, February 13 |
| Sensors: | Fingerprint (rear-mounted), accelerometer, proximity, compass |
