OPPO has once again shaken the smartphone world with the launch of the OPPO F31, a flagship-level device that combines jaw-dropping battery life, cutting-edge camera tech, and future-proof hardware into one aggressive package. With features like a massive 8400mAh battery, a 200MP AI-powered rear camera, and up to 24GB of RAM with 512GB storage, the OPPO F31 appears tailored for power users, gamers, and mobile photography enthusiasts alike.
In this in-depth review, we break down the key aspects of the OPPO F31—its design, display, performance, software, battery, and more—to help you decide if this beast of a phone is worth the buzz.
Table of Contents
Design Excellence and Build Quality
The OPPO F31 delivers a premium experience right from the first glance. It features a clean, minimalist rear panel with a matte finish that resists fingerprints and gives a refined look. The large camera module is neatly integrated, while the side-mounted fingerprint sensor and volume rocker are ergonomically placed.
The frame is crafted from aerospace-grade aluminum, offering strength without adding bulk. OPPO has also reduced the screen-to-body ratio by slimming down the bezels, resulting in a more immersive front display.
Highlights:
- Slim profile despite 8400mAh battery
- Premium matte texture on the back
- Lightweight yet durable aluminum frame
- Smooth haptic feedback and ergonomic button placement
Design Verdict: Bold yet balanced, the OPPO F31’s design achieves both form and function.
Display Technology and Visual Experience
The OPPO F31 boasts a 6.9-inch FHD+ AMOLED panel with a 144Hz refresh rate and HDR10+ support. The display is one of the strongest suits of the device, delivering punchy colors, excellent brightness, and ultra-smooth animations, whether you’re gaming or just scrolling through your apps.
Key Specs:
- 6.9-inch AMOLED display
- Resolution: 2400 x 1080 pixels
- Refresh rate: 144Hz
- Peak brightness: 1300 nits
- Touch sampling rate: 360Hz
In direct sunlight, the display remains readable, while dark mode and eye comfort settings further enhance usability at night.
Display Verdict: Vivid, responsive, and immersive—the F31’s display easily rivals premium flagships.
Performance and Hardware Capabilities
Under the hood, the OPPO F31 is powered by the Snapdragon 8 Gen 3 chipset, coupled with up to 24GB of LPDDR5X RAM and 512GB of UFS 4.0 storage. This configuration ensures lightning-fast app loading, superior multitasking, and sustained performance in demanding applications.
Gaming Performance:
- Supports 90fps gameplay in supported titles
- Advanced cooling with vapor chamber and graphite layers
- Frame rates remain stable during extended sessions
Benchmark Scores (approximate):
- AnTuTu: 1.9 million
- Geekbench Multi-core: 6500+
You can run multiple apps, edit 4K video, and play graphically intense games with ease. There’s also virtual RAM expansion available up to an additional 4GB.
Performance Verdict: Beast-like performance built for power users and gamers.
Advanced Camera System with ZEISS Partnership
One of the biggest highlights of the OPPO F31 is its 200MP main camera, co-developed with ZEISS optics. The quad-camera setup includes wide-angle, macro, and depth sensors, all powered by OPPO’s advanced computational photography engine.
Camera Specs:
- 200MP primary sensor with OIS
- 50MP ultra-wide lens
- 8MP telephoto with 3x optical zoom
- 2MP macro sensor
- 32MP front camera for selfies
The camera app comes with features like Ultra Night Mode, AI Scene Enhancement, 4K 60fps video recording, and manual Pro Mode. Low-light shots retain excellent detail, and daylight captures deliver crisp textures and accurate color tones.
Camera Verdict: A photography powerhouse with pro-grade output and versatility.
Battery Life and Charging Technology
The 8400mAh battery in the OPPO F31 is among the largest ever in a mainstream smartphone, providing multi-day usage even for heavy users.
Battery Performance:
- Screen-on time: Up to 12 hours
- Video streaming: Over 15 hours
- Gaming: 8–10 hours of PUBG/BGMI
The device supports 120W SUPERVOOC fast charging, taking the battery from 0 to 100% in just 32 minutes. It also includes intelligent battery health algorithms to extend battery lifespan over time.
Wireless charging and reverse charging support are also included, making this phone suitable as a mobile power hub.
Battery Verdict: Longest-lasting phone in its class, with ultra-fast refueling to match.
Durability and Water Resistance
To complement its high-performance specs, the OPPO F31 is built with durability in mind.
Durability Features:
- IP68 water and dust resistance
- Corning Gorilla Glass Victus 2 on both front and rear
- Enhanced drop protection with internal shock dispersion
Whether it’s accidental drops or weather exposure, the F31 handles rough use with confidence.
Durability Verdict: Solid build, IP rating, and Gorilla Glass protection make it battle-ready.
Software Experience and AI Features
The OPPO F31 runs on ColorOS 15 based on Android 14, bringing a clean interface with advanced AI optimizations.
Software Features:
- Smart Sidebar for quick app access
- AI Task Scheduler for background power management
- AI-based Photo Enhancer in Gallery
- Gesture Navigation and Flexible Multitasking
ColorOS 15 is smoother, more responsive, and less bloated than past versions, with better memory optimization and privacy features built-in.
Software Verdict: Intuitive, efficient, and tailored to enhance everyday use.
Market Position and Pricing
Despite its flagship-grade specs, OPPO has taken a disruptive pricing approach with the F31.
Expected Pricing in India:
- 12GB RAM + 256GB ROM: ₹27,999
- 24GB RAM + 512GB ROM: ₹31,999
For a phone that packs this much performance and hardware, the pricing undercuts many competitors in the same segment.
Target Audience:
- Gamers looking for endurance and power
- Content creators needing camera performance
- Users who want flagship-level features at a mid-range price
Market Verdict: Possibly the best value-for-money device OPPO has ever released.
Final Verdict
The OPPO F31 is not just another mid-range smartphone. It is a full-blown performance monster disguised in a well-priced body. From the massive battery, groundbreaking 200MP camera, and premium AMOLED display, to the Snapdragon 8 Gen 3 chip and ultra-fast charging, this phone checks every box for tech enthusiasts and power users.
If you’re in the market for a smartphone that goes beyond the ordinary—whether it’s for gaming, photography, or multitasking—the OPPO F31 is well worth considering.
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