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  4. OPPO A31


SKU: cell-455T
Brand: Oppo
Category: Smartphone
Published: May 2, 2023
Last Updated: May 2, 2023
  • Display: 6.5 inches (16.51 cm)
  • CPU: MediaTek Helio P35
  • RAM: 4/6 GB
  • ROM: 128 GB
  • Camera: 12MP + 2MP + 2MP
  • Battery: 4230 mAh



Status Array
Official Official prices and mobile phones are available only in authorized shops. The device comes with an official warranty and the device is listed on the BTRC database in Bangladesh. 4/128GB ৳14,990
Showroom Array


Name Oppo A31
Brand Oppo
Model A31
Announced 10 February, 2020
Release Date 14 February, 2020
Manufacturer A manufacturer is a company engaged in the production of products. Oppo
Made in "Made in" is a label or indication on a product that specifies the country where the product was manufactured or produced. Bangladesh


Display Type IPS LCD
Screen Size 6.5 inches (16.51 cm)
Resolution 720 x 1600 pixels
Aspect Ratio 20:9
Pixel Density 270 ppi
Refresh Rate 60 Hz
Multitouch Smartphone multitouch is a technology that allows the screen to recognize and respond to multiple touch points simultaneously. It enables users to perform gestures like pinch-to-zoom, rotation, and swiping with multiple fingers, enhancing the overall interactivity and usability of the device.
Color Depth 16 million colors
Bezel-Less Display A bezel-less display minimizes or eliminates the non-display areas around the screen, providing a sleek, immersive look and maximizing the visual experience. Yes, with a waterdrop notch
Touch Screen A touch screen is a display screen that is sensitive to human touch. It allows a user to interact with a device by touching icons or graphical elements on the screen instead of using a physical keyboard or mouse. Touch screens can be found in a variety of devices such as smartphones, tablets, laptops, and even some desktop computers. They work by detecting the electrical charge of a user's finger or stylus on the screen and translating that into a command or action on the device. Touch screens have become increasingly popular due to their ease of use and intuitive interface. Yes, Capacitive Touchscreen
Brightness 480 nits
Protection Corning Gorilla Glass v3
Screen Ratio Screen-to-body ratio: Percentage of a device's front surface occupied by the display, indicating how efficiently the space is used for the screen. Higher ratios mean more immersive displays. 89%


Height 163.9 mm
Width 75.5 mm
Thickness 8.3 mm
Weight 180g
Material Built Material: The physical construction materials of a smartphone, influence its durability, weight, and aesthetic qualities. Common materials include metal, glass, plastic, ceramic, etc. Corning Gorilla Glass 3 Front, Plastic Body
Colors Fantasy White, Mystery Black, Lake Green
Waterproof No


Rear Camera Triple
Resolution 12 MP f/1.8, Wide Angle, Primary Camera
2 MP f/2.4, Depth Camera
2 MP f/2.4, Macro Camera
Autofocus Yes, Phase Detection autofocus
Rear Flash Yes, LED Flash
Image Resolution 4000 x 3000 Pixels
Settings Exposure compensation, ISO control
Shooting Modes Continuous Shooting
High Dynamic Range Mode (HDR)
Camera Features Digital Zoom, Auto Flash, Face detection, Touch to focus
Video Recording 1920x1080 @ 30 fps
1280x720 @ 30 fps
Front Camera Single
Resolution 8 MP f/2.0, Primary Camera
Video Recording 1920x1080 @ 30 fps
1280x720 @ 30 fps


Capacity 4230 mAh
Battery Type Li-Polymer
Talk Time Up to 33 Hours(3G)
Up to 45 Hours(2G)
Fast Charging Yes, 10W Fast Charging


Chipset The chipset is the component that controls everything that goes on in your smartphone and ensures that it works properly. MediaTek Helio P35
CPU CPU (Central Processing Unit) mostly known as processors, CPU processes instructions in order to carry out certain functions that make your device operate properly. Processors are often described as the brain of computers, smartphones and tablets, Smartphones and tablets rely on processors to carry out their every task, Processors are an incredibly important factor in selecting any type of computing device, including your smartphone. Octa-core, 2.3 GHz, Cortex A53
Architecture 64 bit
Fabrication With mobile fabrication, users create objects that are part of it. and connect to the context of their use. 12 nm
Graphics The mobile GPU or graphics processing unit is a dedicated co-processor designed to accelerate graphics applications, user interfaces, and 3D content on your smartphone, tablet, wearables, and IoT devices. PowerVR GE8320
RAM Phone memory refers to RAM (Random Access Memory). RAM is the part of the phone that is used to store the operating system (OS) and where apps and data currently in use are kept. Whereas, phone storage is used to store data such as apps, photos, videos, and files that are necessary for the phone to run. 4/6 GB
Custom UI ColorOS
Operating System A mobile operating system (OS) is software that allows smartphones, tablet PCs and other devices to run applications and programs. Android v9.0 (Pie)


ROM ROM (Internal Storage): Device's built-in storage for apps, OS, and user data. 128 GB
MicroSD Card Yes, microSDXC (dedicated slot)
Expandable Storage Yes, Up to 256 GB
Storage Type eMMC 5.1


Number of SIM Dual SIM
SIM Size Nano SIM
SIM Slot Type 2 Nano SIM Slots + 1 MicroSD Slot
Network Support 2G, 3G, 4G
Network Speed HSPA, LTE-A
Technology GSM / HSPA / LTE
2G Bands 2G is a wireless technology standard for mobile telecommunications that was introduced in the 1990s and enabled the transmission of digital voice and data services, using digital transmission instead of analog. It has slower data speeds compared to later generations like 3G and 4G. GSM 1800 / 1900 / 850 / 900 MHz
3G Bands UMTS 1900 / 2100 / 850 / 900 MHz
4G Bands TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41)
FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 850(band 5)


Wi-Fi Yes, Wi-Fi 5 (802.11 a/b/g/n/ac)
Wi-Fi Features Mobile Hotspot
Bluetooth Yes, Bluetooth v5.0
GPS GPS (Global Positioning System) originally Navstar GPS, is a satellite-based radio navigation system. It is a satellite-based radio navigation system, GPS permits users to determine their position, velocity, and the time 24 hours a day, in all weather, anywhere in the world, In order to locate your position, your device or GPS receiver must have a clear view of the sky. Yes with A-GPS, Glonass
NFC NFC (near field communication) is the technology that allows two devices — like your phone and a payments terminal — to talk to each other when they're close together. NFC is the technology that enables contactless payments. No
OTG The full form of OTG is On-The-Go . OTG is a USB (Universal Serial Bus) standard that allows USB devices to be connected. Without using a computer connection, USB OTG items can connect. You can connect your mobile phone or tablet to various gadgets using a USB OTG link. Yes
Browser A browser is a software application that allows users to access and view web pages and other online content on the internet. HTML5
IR Blaster Some smartphones may come with an infrared (IR) blaster, which allows your smartphone to act as a universal remote control for controlling other devices, such as TVs, set-top boxes, and home appliances, that use infrared technology for communication. No
USB Ports Mass storage device, USB charging, microUSB 2.0


Fingerprint Position Array
Fingerprint Type Array
Face Unlock
Other Sensors Magnetic Induction Sensor, Light Sensor, Proximity Sensor, G-Sensor/Acceleration Sensor, Gyroscope, Pedometer


FM Radio
Loudspeaker Yes
Audio Jack 3.5 mm
Voice Recording Yes
Video Playback MP4, AVI, WMV, MOV, 3GP
Audio Playback MP3, AAC, WMA, WAV, FLAC, OGG
Video Format MP4
Image Format JPEG, PNG, GIF, WebP

Our Rating

The overall rating is based on review by our experts

  • Display 7 / 10
  • Design 9 / 10
  • Camera 7 / 10
  • Battery 8 / 10
  • Processor 7 / 10
  • Storage 8 / 10
  • Network 8 / 10
  • Connectivity 7 / 10
  • Multimedia 9 / 10
  • Gaming 7 / 10
  • Features 9 / 10
  • Usability 10 / 10

OPPO A31 is a budget-friendly smartphone that was released in February 2020. It features a 6.5-inch IPS LCD display with a resolution of 720 x 1600 pixels and a 20:9 aspect ratio. It runs on Android 9.0 Pie with OPPO’s custom UI, ColorOS 6.1.

The phone is powered by a MediaTek Helio P35 chipset and comes in two variants: 4GB RAM with 128GB storage or 6GB RAM with 128GB storage. It also has a triple-camera setup on the back, consisting of a 12MP main camera, a 2MP macro camera, and a 2MP depth sensor, and an 8MP front-facing camera. The phone is available in two colors: Mystery Black and Fantasy White.


Design and Build

OPPO A31 has a sleek and modern design that is both stylish and functional. The phone has a plastic back with a glossy finish that gives it a premium look. It also has a plastic frame and a glass front that is protected by Corning Gorilla Glass 3. The phone has a waterdrop notch on the top of the display that houses the front-facing camera. On the back, you will find the triple-camera setup and a fingerprint scanner. The phone has a thickness of 8.3mm and weighs 180g, making it easy to hold and use with one hand.


OPPO A31 has a 6.5-inch IPS LCD display with a resolution of 720 x 1600 pixels and a 20:9 aspect ratio. While the resolution may not be as high as some of the more expensive smartphones, the display still offers good color accuracy and brightness. The phone also has a maximum brightness of 480 nits, which makes it easy to use outdoors in bright sunlight. The display also has a blue light filter that can reduce eye strain during prolonged use.


OPPO A31 is powered by a MediaTek Helio P35 chipset, which is an octa-core processor clocked at 2.3GHz. The phone comes in two variants: 4GB RAM with 128GB storage or 6GB RAM with 128GB storage. The phone also has a dedicated microSD card slot that can expand the storage up to 256GB. The phone runs on Android 9.0 Pie with OPPO’s custom UI, ColorOS 6.1. The software offers a clean and intuitive user interface that is easy to navigate. The phone also has a Game Space mode that optimizes the phone’s performance for gaming.


OPPO A31 has a triple-camera setup on the back, consisting of a 12MP main camera, a 2MP macro camera, and a 2MP depth sensor. The main camera has an aperture of f/1.8 and supports PDAF autofocus. It can shoot 1080p videos at 30fps. The macro camera has an aperture of f/2.4 and can take close-up shots of objects from a distance of 4cm. The depth sensor helps to capture portrait photos with a bokeh effect. The phone also has an 8MP front-facing camera that supports HDR and can shoot 1080p videos at 30fps.

Battery Life

OPPO A31 comes with a non-removable Li-Po 4230mAh battery, which is decent for a budget smartphone. The phone also supports 10W fast charging, which can charge the phone from 0% to 100% in about 2 hours. In terms of battery life, the phone can last for a full day with moderate usage, but heavy usage may require a mid-day charge.


OPPO A31 supports 4G LTE, Wi-Fi 802.11 a/b/g/n/ac, Bluetooth 5.0, GPS, and a microUSB 2.0 port for charging and data transfer. The phone also has a 3.5mm headphone jack, which is a rare feature among modern smartphones.

Oppo A31 Price in Bangladesh 2024

The smartphone is available in two variants in Bangladesh: 4GB RAM with 128GB storage and 6GB RAM with 128GB storage. The 4GB RAM with 128GB storage variant is priced at 14,990 BDT, while the 6GB RAM with 128GB storage variant is priced at 17,990 BDT.

Pros and Cons

Before purchasing a smartphone, it’s important to consider both the advantages and disadvantages of the device. This helps you make an informed decision and choose a phone that meets your specific needs and preferences. In this section, we’ll discuss the pros and cons of the OPPO A31.

✔ Affordable price✘ No FM Radio
✔ Good design and build quality✘ Low-resolution display
✔ Decent performance and battery life✘ Outdated Android version
✔ Triple-camera setup with macro and depth sensors✘ No USB Type-C port
✔ 3.5mm headphone jack✘ No NFC support


OPPO A31 is a good budget smartphone that offers decent features for its price. It has a good design and build quality, a decent performance and battery life, and a triple-camera setup with macro and depth sensors. However, it also has some drawbacks, such as a low-resolution display, an outdated Android version, and no fast charging support. Overall, if you are on a tight budget and looking for a reliable smartphone, OPPO A31 is definitely worth considering.


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