OPPO F31 Pro Plus Full Review: Best Budget Phone with 7000mAh Battery?

OPPO has officially launched its latest F-series smartphone in India. The OPPO F31 Pro+ known for its strong focus on design, camera, and performance, the F-series has often attracted users looking for stylish mid-range smartphones. With the F31 Pro+, OPPO takes a big step forward in durability, battery life, and AI-powered software features.

This model is clearly built for users who need more than just a pretty phone. It’s designed for real-world use whether you spend time outdoors, use your phone heavily for work and entertainment, or just want something that lasts all day without worry. From a massive 7000mAh battery to extreme heat and water resistance, the OPPO F31 Pro+ brings a rugged flagship-like experience in a mid-range budget. Let’s explore all the key features, performance, and value this new launch offers.

Launch Date and Availability

The OPPO F31 Pro+ was officially launched in India on 19 September 2025. Along with this model, OPPO also introduced the F31 and F31 Pro. The new devices are available for purchase both online and offline, including on Flipkart, Amazon, OPPO’s own online store, and in retail outlets across the country.

Price and Variants in India

The OPPO F31 Pro+ comes in two memory variants. The base model with 8GB RAM and 256GB storage is priced at ₹32,999, while the higher-end model with 12GB RAM and 256GB storage is priced at ₹34,999. Both variants offer great performance and storage capacity for the price.

Colour options include Gemstone Blue, Festival Pink, and Himalayan White, giving users a stylish range to choose from.

Design and Durability Features

One of the standout features of the OPPO F31 Pro+ is its rugged and durable design. OPPO calls it the 360° Armour Body, which includes an aluminium alloy frame and reinforced glass. The phone uses AM04-grade aluminium, and the front display is protected by AGC DT-Star D+ glass, which offers extra toughness against drops and scratches.

The phone also has triple IP ratings - IP66, IP68, and IP69 - making it dustproof, water-resistant, and able to handle high-pressure water streams. This means you can confidently use this phone during rain, at the beach, or even in dusty outdoor conditions. OPPO has also tested the phone to work reliably even in extreme heat up to 43°C, making it ideal for Indian summers.

Display Experience

The OPPO F31 Pro+ features a 6.8-inch flat AMOLED display with a 120Hz refresh rate. This provides smooth visuals while scrolling, gaming, or watching videos. The display is bright, vibrant, and offers immersive viewing thanks to its minimal bezels. The screen also comes with an in-display fingerprint sensor, allowing for quick and secure unlocking.

Performance and Hardware

Under the hood, the F31 Pro+ is powered by the Qualcomm Snapdragon 7 Gen 3 processor, a powerful and efficient chipset built using 4nm technology. This ensures smooth multitasking, fast app loading, and efficient power usage.

The phone comes with up to 12GB of RAM, which can be expanded virtually up to 24GB using OPPO’s RAM expansion technology. The storage is UFS 3.1, offering faster read and write speeds, which helps in gaming, app switching, and loading large files.

For cooling, the device uses a large vapor chamber system and multiple graphite layers. This helps in managing heat effectively during gaming or heavy usage, keeping the phone comfortable to hold even after long periods of use.

Battery Life and Charging

Battery life is one of the biggest highlights of the OPPO F31 Pro+. It packs a huge 7000mAh battery, which is rare in modern smartphones. This allows the phone to easily last two full days for most users with moderate usage.

Charging is handled by 80W SUPERVOOC fast charging. It can charge the phone up to 58% in just 30 minutes and reach full charge in about an hour. Features like reverse charging and bypass charging are also available, making it more flexible and battery-friendly during long gaming or usage sessions.

Camera and Photography Features

On the back, the OPPO F31 Pro+ comes with a dual-camera setup, featuring a 50MP main sensor with optical image stabilization (OIS) and a 2MP mono lens for depth or black-and-white shots. The camera supports 4K video recording and offers good performance in daylight and well-lit environments.

On the front, there is a 32MP selfie camera, which captures clear and detailed portraits. The camera app is powered by OPPO’s AI features such as AI Eraser, AI Unblur, and Reflection Remover, helping you enhance your photos with minimal effort. You can also shoot underwater, thanks to the phone’s IP68 rating.

Software and User Experience

The phone runs Android 15 with ColorOS 15, OPPO’s custom skin. The software is clean, fast, and comes with several useful tools like AI Voice Scribe, which helps in transcription and live translation, and OPPO Docs, which makes document scanning and editing easier on the go.

OPPO has introduced 72-Month Fluency Protection, which uses system optimizations to keep the phone running smoothly for up to six years without lag or performance drop. It also includes system updates and background management tools that improve long-term user experience.

Overall Strengths and Limitations

The OPPO F31 Pro+ has several strong points. It offers excellent battery life, strong durability, fast charging, and reliable performance. The phone is ideal for people who work outdoors, travel frequently, or want a phone that won’t die quickly during heavy use.

However, there are a few areas where the phone could be better. The rear camera system is decent but not as versatile as some competitors that offer ultra-wide or telephoto lenses. Also, while the software is feature-rich, there are some pre-installed apps that not everyone may find useful.

Who Should Buy the OPPO F31 Pro+?

If you are someone who values battery life, build quality, and durability, the OPPO F31 Pro+ is an excellent choice. It’s built to last, both in terms of hardware and performance. The phone is also well-suited for users who enjoy multimedia, need a reliable daily driver for work, or want extra protection from the elements without using a bulky case.

On the other hand, if you’re a heavy mobile gamer looking for flagship-level graphics or someone who wants a versatile camera setup with multiple lenses, you might want to explore other options in the same price range.

Conclusion

The OPPO F31 Pro+ brings a solid blend of durability, battery, and everyday performance at a competitive price. Its 7000mAh battery, rugged design, IP69 certification, and AI-powered tools make it a phone built for tough conditions and practical use. At a starting price of ₹32,999, it stands out in the crowded mid-range market by offering features that are both premium and useful.

If you're in the market for a powerful and long-lasting phone that doesn’t break the bank, the OPPO F31 Pro+ is definitely worth considering.

Frequently Asked Questions (FAQs):

Q1: Is OPPO F31 Pro+ good for gaming?

Yes, the OPPO F31 Pro+ performs well for most mobile games. It has the Snapdragon 7 Gen 3 processor, 120Hz display, and up to 24GB dynamic RAM (with expansion). Games like BGMI, Call of Duty, and Asphalt 9 run smoothly at medium to high settings. However, for very high-end gaming with ultra graphics and long sessions, a dedicated gaming phone may be better.

Q2: Does the OPPO F31 Pro+ support 5G?

Yes, the F31 Pro+ supports 5G connectivity, which means you can enjoy faster internet speeds where 5G networks are available. It supports multiple 5G bands for better coverage.

Q3: Is the OPPO F31 Pro+ waterproof?

The phone is not completely waterproof, but it is highly water-resistant. With IP66, IP68, and IP69 ratings, it can handle rain, splashes, dust, and even high-pressure water jets. However, it's still best to avoid submerging it underwater for a long time.

Q4: How long does the battery last on OPPO F31 Pro+?

Thanks to its huge 7000mAh battery, the phone easily lasts 2 full days with moderate use. Even with heavy use (gaming, camera, browsing), it can last a full day or more on one charge.

Q5: How fast does the phone charge?

The OPPO F31 Pro+ supports 80W SUPERVOOC fast charging. You can get about 58% charge in 30 minutes, and a full charge in just over an hour. It also supports bypass charging to keep the phone cool while charging during games or long use.

Q6: Does the OPPO F31 Pro+ come with a charger in the box?

Yes, the retail box includes the 80W fast charger and USB-C cable. OPPO also includes a transparent back cover and a SIM ejector tool in the box.

Disclaimer: Product specs and pricing may be subject to change. Verify details with official sources before purchase.