The OPPO F31 Pro is another new addition to OPPO's upper-mid-range series, which has arrived as the successor to the camera-centric Reno series. This model is focused on the smooth design, good construction, and extended battery life, which makes it a stable partner in everyday life. The F31 Pro has features like underwater photography and videography, which to photography enthusiasts is a great convenience to have, with the ability of fast charging and high-speed network connectivity.

Nevertheless, the chipset can perform daily tasks without any issues, but it can be humble when it comes to more demanding tasks, and the camera system, despite the capability, is not as flexible as more expensive models.

An In-Depth Review on Oppo F31 Pro

The OPPO F31 Pro is a powerful and elegant smartphone with a glossy design and a massive AMOLED screen to enjoy the content. The gadget has a 50MP dual rear camera and 32MP front shooter that is compatible with underwater photography and videography to allow adventurous users. 

The F31 Pro has a long-lasting performance due to its 7000mAh fast-charging battery, which makes it a reliable device to be used daily and in the outdoors. This review analyzes the OPPO F31 Pro based on the design, performance, camera features, such as underwater photography and videography, and the price in Bangladesh.

Box Content

This is what you get inside the OPPO F31 Pro Design box:

• OPPO F31 Pro Smartphone
• 80W VOOC Charger
• USB Type-C cable
• Protective Case
• SIM ejector tool
• User manual

The OPPO F31 Pro is well packaged with all that you need to start off. The smartphone itself, a 80W VOOC fast charger, and a USB Type-C cable to charge and transfer data will be included in the box. A SIM ejector tool is also provided with OPPP. The user manual and warranty card are also available to help in setting up and support. This is a well-packaged box that allows you to begin using your F31 Pro immediately without having to buy other accessories.

Design & Build Quality

The OPPO F31 Pro has a sophisticated and functional design that is both stylish and long-lasting. The back is made of matte-glass, which gives it a slight shine without being overly fingerprinted, and the aluminum frame is polished, giving it a sense of rigidity and high quality. The camera module is well rounded, almost flat with the back panel and the ramp is quite small so that it does not make the camera module feel like it is adding to the weight. In general, the F31 Pro is slim with a profile of 8.0mm and weighs 190 grams, which is easy to carry despite its large battery.

The phone is solid and not too premium in the hand. Its lightweight design and flat edges make it easy to hold, although its boxy design can become a bit bulky when used over an extended period of time. OPPO comes with a case, which provides grip and protection, yet it will always cover part of the aesthetic value of the phone.

The F31 Pro has a significant strength in terms of durability. The device is triple IP rated as IP66, IP68, and IP69 and is therefore resistant to dust, water and high pressure sprays. A Multi-Layer Airbag Cushioning system has also been introduced to OPP to safeguard the main internal parts such as the camera, battery, and speakers against small shocks and falls. The phone has been tested under MIL-STD-810H-2022, which means that it can handle extreme temperatures, humidity, rainfall, constant vibration, and even salt mist.

The display of the F31 Pro is covered with AGC DT-Star D+ glass which is more resistant to scratches. Although the phone is not very heavy considering the size of the battery of 7000mAh, the weight is slightly skewed towards the bottom, and this can be a problem when it comes to ergonomics when using the phone in a vertical position. Generally, the F31 Pro is a design that offers a decent mix of style, comfort, and durability; it is a safe bet among users who would not sacrifice style to achieve durability.

Display

The OPPO F31 Pro has a 6.57-inch AMOLED display device with Full HD+ resolution of 2372 x 1080 pixels with a pixel density of 397 PPI. It also helps a flexible 120Hz refresh rate, which makes scrolling and responsiveness to be smooth. AGC DT-Star D+ glass which is characterized by increased scratch resistance secures the display.

Brightness wise, the F31 Pro has a maximum brightness of 1400 nits which is average in its category. Although this offers sufficient brightness in the indoor setting and in the darker outdoor setting, it might not perform as well in direct sunlight as some of its competitors at higher peak brightness levels.

The color reproduction is rich and the display has a capacity of 1.07 billion colors. Users have the option of using the default Vivid mode which gives more saturated colors or the Natural mode which gives a more subdued palette. Also, the color temperature may be changed to warmer or cooler colors to fit personal preferences.

The display on the F31 Pro also has good viewing angles and deep blacks which is also characteristic of AMOLED panels which improves the overall multimedia experience. The display is visually stimulating whether it is playing games or watching videos.

On the whole, the display of the OPPO F31 Pro is a good compromise between a well-functioning and well-performing smooth screen, vivid colors, and a reasonable level of brightness, which makes it a good option to choose when you want to have an immersive viewing experience at the middle-range segment.

Camera

The OPPO F31 Pro has a dual rear camera with a 50MP primary sensor and a 2MP monochrome lens, with the front camera being a 32MP punch-hole camera, which is used to take selfies and make video calls. Its cameras are packed with several shooting features, such as underwater photography and videography, Time-Lapse, Slow-Mo video, and others, in addition to 4K video recording at 30fps. All these features render the F31 Pro an attractive choice to users that like taking content in unusual places especially when they are under water which is not a common feature of the mid-range smartphones.

Daylight Photo:

During the daytime, the F31 Pro gives natural and realistic images with natural colours. Although it does not reach the saturation of some of its competitors, the overall tone is somehow dull, which makes the photos appear flatter. The reproduction of fine details is not exceptional, but sufficient, and the field of view is a little narrow. 

There is a good treatment of exposure, with highlights being kept in check, but the shadows may sometimes seem crushed, which is a little restrictive on dynamic range. Portrait shots have a steady bokeh effect, although edge detection is not perfect, with slight distortion of edges being noticeable on the edges of subjects. The skin tones are natural and the camera is especially powerful when it comes to portraits and human subjects.

Low-light Photo:

The performance in low-light is not bad, but the F31 Pro does not cope with noise and light flare as well as devices at higher prices. Shadows are less pronounced and finer textures may be lost in low light situations. With that said, the front-facing camera, which has 32MP, provides a precise skin tone and natural-like selfies, but it also tends to blur the details on the faces.

Under Water Photography and Videography:

The F31 Pro is actually unique in its underwater photography and videography. Combined with the OPPO optimised camera software, the IP66, IP68, and IP69 ratings enable users to take stills and videos underwater with amazing colour fidelity and stability. The waterproofing is such that photos and videos are readable even when fully submerged and the camera has the same exposure and colour balance so that details are not overexposed to any highlights. This aspect gives F31 Pro a good option among swimmers, divers or anyone who wants to record aquatic activities without extra housing.

On the whole, the OPPO F31 Pro is very effective in creating natural and toned-down images with a good bokeh effect and high colour accuracy, especially when used underwater. Although it might not match flagship devices in low light performance or in the ability to reproduce fine details, its underwater photo and video capture makes it have a special edge in the mid-range market, to users who appreciate durability and versatility of their smartphone camera.

Performance & Software

The OPPO F31 Pro is a smartphone that uses the MediaTek Dimensity 7300 chipset with 8GB of RAM and 128GB of internal storage. This configuration is capable of dealing with daily work, multitasking and moderate gaming without any problems, and the performance is stable enough to please most users. Although it might not be as powerful as the latest mid-range chipsets such as the Snapdragon 7 Gen 4 in other smartphones, the F31 Pro still has the potential to execute popular apps and games without any major lag or stuttering.

The F31 Pro also has a high-performing heat management system, which allows the device to be held comfortably during long gaming sessions and avoids performance throttling. The moderate gaming environments are smooth and the handset can support gameplay without any visible frame drops, which is why it is suitable for casual gamers.

Another feature is connectivity. The F31 Pro also uses 5G networks and is equipped with OPPO NetworkBoost technology and low-frequency antennas to guarantee that the signal is consistently received, even in high-density locations or other problematic areas. In normal circumstances, users will be guaranteed of good mobile data and calls that are stable.

The device has a familiar and rich interface running ColorOS 15 which is based on Android 15. Two years of significant OS upgrades and three years of security updates ensure that the software remains secure and up to date at OPPO. The interface is loaded with a number of applications, such as OPPO App Market, Hot Apps, and Hot Games, which may seem overwhelming at first but can be easily controlled and partially removed.

F31 Pro also has AI-powered features that can help to improve productivity and content creation. These are real-time translation, call summaries, automatic subtitles, image recomposition, object removal, and image enhancement. Although these functions are effective, they need an active internet connection to work.

The performance and software features of OPPO F31 Pro provide a good balance of performance and software features in a mid-range smartphone, allowing both casual and slightly demanding users to use the phone in their daily life with ease, connectivity, and useful productivity features.

AnTuTu Benchmark & GeekBench Score

The OPPO F31 Pro offers good performance standards, which highlights its status in the high mid-range market.

The F31 Pro has a chipset of MediaTek Dimensity 7300 and a score of about 902,348 on AnTuTu benchmark. This ranks it higher than 79 percent of smartphones in the market, which means that it performs well in day-to-day activities and average gaming.

Geekbench 6 tests show the F31 Pro with a single-core score of 744 and a multi-core score of 2,511. These scores indicate effective processing abilities, which are appropriate in multitasking and tasking situations.

Although the F31 Pro is not as powerful as flagship models, its performance is balanced, which makes it operate smoothly by most users.

Battery & Charger

The OPPO F31 Pro has an impressive 7,000mAh battery that provides great power to use on the daily routine. Our PCMark battery test had the device at approximately 13 hours and 30 minutes, which is good, albeit a little lower than some of its competitors with the same capacity who can run over 15 hours. In everyday use, such as web browsing, social media, and video streaming, the F31 Pro has a full day of battery life and can even extend to the next day without any issues with a battery charge.

When playing multimedia, the phone used only 2 percent of the battery per 30 minutes of play, which is a safe choice to watch movies or shows on the move. Gaming is more intensive, and 30 minutes of games such as BGMI or Call of Duty: Mobile drain about 16 percent of the battery, which is typical of this category.

The charging is also done efficiently with 80W SuperVOOC which is provided in the box. It takes the F31 Pro less than an hour to charge between 20 and 80 percent, which is a solid result considering the size of the battery. Another feature of OPPO is Bypass Charging, which allows the phone to be charged directly through the charger when it is used, minimizing the number of unnecessary charge-discharge cycles and heat generation, and prolonging the battery life in the long term.

OPPO F31 Pro Price in Bangladesh

In October 2025, the OPPO F31 Pro price in Bangladesh is BDT 34,000 (Unofficial). This is the price of the entry model with 8GB of RAM and 128GB of internal memory. The device is also offered in higher configurations, including 12GB RAM with 256GB storage, which may be priced slightly higher.

F31 Pro can be purchased at different online shops and local mobile shops. It is better to look at the prices on other platforms and see whether some promotions or discounts are offered.

Final Word

The OPPO F31 Pro is a balanced upper mid-range smartphone that has a good balance between design, performance, and durability. Its massive 7,000mAh battery, colorful AMOLED screen, and powerful dual-camera system, including underwater photography and videography, make it the perfect device both to the casual user and content creators. Although the Dimensity 7300 chipset is not the most powerful in its category, it copes with everyday tasks and moderate gaming without any difficulties. The F31 Pro is a great value in Bangladesh with its fast charging capabilities, stable connectivity and rich software.

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