The overall rating is based on review by our experts
| Basic Information | |
| Release Date | 14 Feb 2020 |
| Status | Available |
| Hardware & Software | |
| CPU | Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53) |
| GPU | PowerVR GE8320 |
| Chipset | MediaTek MT6765V/CB Helio P35 (12 nm) |
| CPU Cores | 8 Cores |
| OS Version | Android 9.0 (Pie) |
| Fabrication | 12 nm |
| Architecture | 64-bit |
| User Interface | ColorOS 6.1 |
| Operating System | Android |
| Display | |
| Notch | Waterdrop notch |
| Features | Eye Protection Screen, Sunlight Screen, Night Shield |
| Brightness | 480 nits (typical) |
| Resolution | 720 x 1600 pixels (HD+) |
| HDR Support | No |
| Screen Size | 6.5 inches (102.0 cm²) |
| Aspect Ratio | 20:9 ratio |
| Display Type | IPS LCD |
| Refresh Rate | 60Hz |
| Touch Screen | Capacitive touchscreen, Multi-touch |
| Pixel Density | ~270 ppi density |
| Screen Protection | Corning Gorilla Glass 3 |
| Bezel-less Display | Yes with waterdrop notch |
| Screen to Body Ratio | ~82.4% |
| Cameras | |
| OIS | No |
| Zoom | Digital Zoom |
| Flash | LED Flash |
| Sensor | 12MP (1/2.86", 1.25µm) + 2MP Macro (f/2.4) + 2MP Depth (f/2.4) |
| Aperture | f/1.8 (wide), f/2.4 (macro), f/2.4 (depth) |
| Settings | Exposure compensation, ISO control, White balance presets |
| Autofocus | Phase Detection Autofocus (PDAF) |
| Video FPS | 30 fps |
| Resolution | 12 MP (wide) + 2 MP (macro) + 2 MP (depth) |
| Camera Setup | Triple Camera Setup |
| Shooting Modes | Portrait Bokeh, Macro Mode, Dazzle Color Mode, Panorama, Time-lapse, HDR, Continuous Shooting |
| Camera Features | PDAF, Portrait bokeh, Dazzle Color Mode, AI Beautification, HDR, LED flash |
| Video Recording | 1080p at 30fps, 720p at 30fps |
| Image Resolution | 4000 x 3000 pixels |
| Selfie Camera | |
| OIS | No |
| Sensor | CMOS Sensor (1/4.0", 1.12µm) |
| Aperture | f/2.0 |
| Autofocus | Fixed Focus |
| Video FPS | 30 fps |
| Resolution | 8 MP |
| Camera Setup | Single Camera Setup (Waterdrop Notch) |
| Camera Features | AI Beautification, HDR, Front Screen Flash |
| Video Recording | 1080p at 30fps, 720p at 30fps |
| Design | |
| Build | Glass front (Gorilla Glass 3), plastic frame, plastic back with 3D ergonomic curve |
| Width | 75.5 mm |
| Colors | Mystery Black, Fantasy White, Lake Green |
| Height | 163.9 mm |
| Weight | 180 grams |
| IP Rating | Not Certified |
| Thickness | 8.3 mm |
| Ruggedness | Corning Gorilla Glass 3 front protection |
| Waterproof | No |
| Battery | |
| Capacity | 4230 mAh non-removable |
| USB Type | microUSB 2.0 |
| Placement | Internal (Non-removable) |
| Battery Type | Li-Po (Lithium Polymer) |
| Quick Charging | 10W Charging (5V/2A standard) |
| Reverse Charging | No |
| Wireless Charging | No |
| Memory | |
| RAM | 4 GB |
| USB OTG | Yes |
| RAM Type | LPDDR4X |
| Card Slot | Dedicated microSDXC card slot (up to 256 GB) |
| Storage Type | eMMC 5.1 |
| Internal Storage | 128 GB |
| Network & Connectivity | |
| GPS | GPS, A-GPS, GLONASS, BDS |
| NFC | No |
| USB | microUSB 2.0, USB OTG |
| EDGE | Yes |
| GPRS | Yes |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac (2.4GHz + 5GHz), Wi-Fi Direct, Hotspot |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A |
| VoLTE | Yes |
| Network | 2G, 3G, 4G LTE |
| Infrared | No |
| SIM Size | Nano-SIM / Nano-SIM |
| SIM Slot | Triple Slot (Dual Nano-SIM + dedicated microSD card slot) |
| Bluetooth | Bluetooth 5.0, A2DP, LE |
| SAR Value | 1.18 W/kg (head), 0.91 W/kg (body) |
| Wi-Fi Hotspot | Yes |
| Sensors & Security | |
| Compass | Magnetic induction sensor |
| Barometer | No |
| Gyroscope | Virtual Gyroscope |
| Face Unlock | Yes (AI Face Unlock) |
| Light Sensor | Ambient light sensor |
| Accelerometer | Yes |
| Proximity Sensor | Proximity sensor |
| Finger Sensor Type | Touch sensor |
| Fingerprint Sensor | Yes (Capacitive physical sensor) |
| Finger Sensor Position | Rear-mounted |
| Multimedia | |
| Video | 1080p at 30fps playback, MP4, MKV, 3GP, AVI |
| Audio Jack | 3.5 mm headphone jack |
| Loudspeaker | Mono loudspeaker |
| Audio Features | Dirac HD Sound audio enhancement, dedicated active noise cancellation microphone |
| More | |
| Made By | OPPO |
| Features | 3-Card Slot (Dual Nano-SIM + MicroSD), Dazzle Color Mode, Dirac HD Sound, Eye Protection Display, Game Space optimization |
The OPPO A31 is an entry-level smartphone designed to deliver spacious storage, long-lasting battery endurance, and comfortable daily usability in Bangladesh. Built with an ergonomic 3D curved plastic unibody weighing 180 grams, it comes in attractive gradient finishes including Mystery Black, Fantasy White, and Lake Green. The front is centered around a 6.5-inch HD+ (720 x 1600 pixels) IPS LCD waterdrop display protected by Corning Gorilla Glass 3, featuring blue light eye protection filters and sunlight contrast adjustment for outdoor reading. Under the hood, the phone is powered by a 12nm MediaTek Helio P35 octa-core processor with PowerVR GE8320 graphics, accompanied by 4GB of LPDDR4X RAM and a generous 128GB of eMMC 5.1 storage that can be expanded up to 256GB using its dedicated microSD card slot. Its triple rear camera module comprises a 12MP primary camera with Phase Detection Autofocus (PDAF), a 2MP macro lens for 4cm close-up photography, and a 2MP depth sensor for portrait bokeh, paired with an 8MP AI Beautification selfie camera. Powered by a dependable 4230 mAh battery, a rear-mounted capacitive fingerprint scanner, AI Face Unlock, Dirac HD Sound, and a 3.5mm headphone jack, the OPPO A31 offers an accessible package for everyday multimedia, communication, and social browsing.
