Oppo A31 is the Dual SIM 4G smartphone which comes with 4.50 Inches Display and 854x480 Pixels resolution. It is powered by 1.2 GHz Quad-Core Processor with Android 4.4 Kitkat OS along with Color OS 2.0.1. It is specified with 5 Mega Pixels secondary camera and 8 Mega Pixels primary camera along with LED Flash and AF. It is embedded with 8 GB Internal storage, 1 GB of RAM and 128 GB expandable SD card slot. It is coupled with many features like Bluetooth, Micro USB, Java, GPRS, GPS with A-GPS, Wi-Fi with Hotspot and 2000 mAh Battery.

Features and Specifications
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| General | 2G Network | GSM 850/900/1800/1900 MHz |
| 3G Network | HSDPA | |
| 4G Network | LTE 1900/2300/2500/2600 MHz | |
| SIM | Dual SIM (Micro SIM+Nano SIM) | |
| Dimensions | 131.90 x 65.50 x 8 mm | |
| Weight | 135 g | |
| Colors | White, Blue | |
| Display | Type | IPS LCD Touchscreen (16M Colors) |
| Screen Size | 4.5 Inches | |
| Resolution | 854x480 Pixels | |
| Sound | Loudspeaker | Yes |
| Camera | Primary | 8 MP with LED Flash and AF |
| Secondary | 5 MP | |
| Memory | SD Card Slot | Yes expandable up to 256 GB |
| Internal | 8 GB | |
| RAM | 1 GB | |
| Data/Connectivity | GPRS | Yes |
| Speed | HSPA, LTE Cat 4 150/50 Mbps | |
| WLAN | Wi-Fi 802.11 b/g/n with Hotspot | |
| Bluetooth | Yes | |
| HeadPhones | 3.5 mm Audio Jack | |
| USB | Yes Micro USB | |
| GPS | Yes with A-GPS | |
| Software/Hardware | OS | Android 4.4 v Kitkat OS with ColorOS 2.0.1 |
| CPU | 1.2 GHz Quad-Core Processor Cortex-A53 | |
| GPU | Adreno 306 | |
| Java | Yes | |
| Sensors | Proximity, Accelerometer, Ambient Light | |
| Browser | HTML5 | |
| Messaging | SMS, MMS, E-Mail, Push Mail, IM | |
| Radio/FM | No | |
| Battery | Capacity | Li-Ion 2000 mAh Battery |
| Stand-By | Up to 240 Hrs | |
| Talk Time | Up to 7 Hrs | |
