| Hardware and OS | Oppo A31 (2015) | |
| Operating system | Android 4.4 (KitKat) | |
| Processor | Quad-core 1.2 GHz Cortex-A53 | |
| Chipset | Qualcomm MSM8916 Snapdragon 410 (28 nm) | |
| Internal memory | 8GB 1GB RAM | |
| External memory | microSDXC (dedicated slot) | |
| GPU | Adreno 306 | |
| Display | Oppo A31 (2015) | other phones |
| Size | 4.5 inches, 55.8 cm2 | |
| Resolution | 480 x 854 pixels, 16:9 ratio | |
| Type | IPS LCD capacitive touchscreen, 16M colors | |
| Main Camera | Oppo A31 (2015) | other phones |
| Camera | 8 MP, AF | |
| Features | LED flash | |
| Video | 1080p@30fps | |
| Selfie camera | Oppo A31 (2015) | other phones |
| Camera | 5 MP | |
| Connectivity | Oppo A31 (2015) | other phones |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G Network | TD-SCDMA | |
| 4G Network | LTE band 38(2600), 39(1900), 40(2300), 41(2500) | |
| Bluetooth | 4.0, A2DP | |
| EDGE | Yes | |
| GPRS | Yes | |
| GPS | Yes, with A-GPS | |
| Speed | TD-SCDMA, LTE Cat4 150/50 Mbps | |
| Technology | GSM / LTE | |
| USB | microUSB 2.0 | |
| WLAN | Wi-Fi 802.11 b/g/n | |
| Multimedia | Oppo A31 (2015) | other phones |
| 3.5 mm Jack | Yes | |
| Loudspeaker | Yes | |
| Radio | No | |
| Battery | Oppo A31 (2015) | other phones |
| Capacity | Non-removable Li-Ion 2000 mAh battery | |
| Stand-by | Up to 240 h | |
| Talk time | Up to 7 h | |
| Design | Oppo A31 (2015) | other phones |
| Colors | White, Blue | |
| Dimensions | 131.9 x 65.5 x 8 mm (5.19 x 2.58 x 0.31 in) | |
| Weight | 135 g (4.76 oz) | |
| SIM | Dual SIM (Nano-SIM/ Micro-SIM, dual stand-by) | |
| Features | Oppo A31 (2015) | other phones |
| Sensors | Accelerometer, proximity | |
