2025 OPPO F31 Pro+ 5G Review: Durability, Massive Battery & Smoothest Experience Yet

The OPPO F31 series has landed in India, and the spotlight is on the flagship OPPO F31 Pro+ 5G, a smartphone that promises to redefine the mid-range segment with its massive 7,000 mAh battery, IP69 durability, and buttery-smooth performance. Launched as part of OPPO’s popular F-series, known for dominating India’s offline market, the F31 Pro+ aims to elevate the experience with a stunning AMOLED display, Snapdragon power, and a robust build. In this comprehensive review, based on insights from a recent unboxing and test video, we dive deep into the phone’s design, performance, camera, battery life, and software to determine if it’s the best mid-range smartphone under ₹35,000 in 2025.

From durability tests to gaming prowess, here’s everything you need to know about the OPPO F31 Pro+ 5G and how it stacks up against its predecessor, the F29 Pro.

Introduction

OPPO’s F-series has long been a favorite among Indian buyers, especially in the offline market, thanks to its blend of style, performance, and value. The 2025 OPPO F31 Pro+ 5G takes this legacy forward, packing a massive 7,000 mAh battery, a military-grade IP69 build, and a 120 Hz AMOLED display that promises a seamless experience. Unveiled alongside the F31 and F31 Pro, this top-tier variant aims to stand out with upgrades over the F29 Pro, including a flat display, enhanced performance, and a larger battery.

In this detailed review, we unbox the F31 Pro+ 5G, test its durability, camera, gaming, and software, and compare it to its predecessor to help you decide if it’s worth the estimated ₹35,000 price tag. Whether you’re a gamer, content creator, or everyday user, join us as we explore what makes this phone the “smoothest in every move” in OPPO’s F-series lineup.

Unboxing the OPPO F31 Pro+ 5G

The OPPO F31 Pro+ 5G arrives in a sleek, premium box with the tagline “Smooth in Every Move,” setting high expectations. Inside, you’ll find:

• OPPO F31 Pro+ 5G Smartphone: In the stunning Gemstone Blue color (also available in Starlight White and Midnight Black).
• 80W SUPERVOOC Charger: Supports fast charging for the massive battery.
• USB-A to USB-C Cable: Durable and well-built.
• Silicone Case: High-quality, transparent, and grippy for added protection.
• SIM Ejector Tool: Standard but functional.
• Quick Start Guide and Warranty Card: Essential documentation.

The unboxing experience is elevated by OPPO’s attention to detail, with a special edition box that includes extras like the OPPO Enco Buds 3 Pro, a branded bottle, and a “Live Studio” accessory (contents undisclosed but likely a promotional item). This premium packaging reflects OPPO’s focus on offline appeal, where presentation matters. For our testing, we received two such boxes, which are part of a giveaway (details at the end), making the unboxing feel like a festive treat for fans.

Design & Build Quality

Aesthetic Appeal

The OPPO F31 Pro+ 5G adopts a minimalist yet elegant design, moving away from the quad-curved display of the F29 Pro to a flat 6.8-inch AMOLED panel. Available in three colors—Gemstone Blue, Starlight White, and Midnight Black—the phone exudes sophistication. The Gemstone Blue variant we tested shimmers under light, with a glossy finish that resists fingerprints thanks to a subtle matte coating. The flat design not only looks modern but also improves grip compared to curved screens, reducing accidental touches.

Build and Durability

At 7.8 mm thick and weighing 198 grams, the F31 Pro+ feels surprisingly light for its massive battery, defying our initial guess of 203 grams. The frame and back are made of polycarbonate, but don’t let that fool you—this is no ordinary build. The phone features a 360° Armor Body, certified to military-grade standards (MIL-STD-810H), making it highly resistant to drops and impacts. OPPO claims it can withstand falls on flat surfaces and even stairs, and our tests confirmed its resilience, with no visible damage after controlled drops.

The F31 Pro+ is also IP66, IP68, and IP69 certified, offering protection against dust, water submersion, and high-pressure water jets. It’s resistant to 18 types of liquids, including water, coffee, and soda. We tested this by submerging the phone and washing it under a tap, and it emerged unscathed, making it ideal for outdoor use in India’s diverse conditions, from monsoons to dusty roads. The flat display is protected by Gorilla Glass Victus 2, adding scratch resistance to the package.

Physical Layout

• Right Side: Power button and volume rockers, tactile and well-placed.
• Top: Noise-canceling microphone and secondary speaker.
• Bottom: SIM slot, primary microphone, USB-C port, and main speaker.
• Front: 6.8-inch flat AMOLED with slim 1.8 mm bezels (93.5% screen-to-body ratio).
• Back: Dual camera module with a minimalist, flush design.

Design Takeaway

The OPPO F31 Pro+ 5G combines a sleek, lightweight design with top-tier durability. The shift to a flat display is a smart move, aligning with user preferences for practicality over aesthetics. Its IP69 rating and military-grade build make it one of the toughest phones in its class, perfect for clumsy users or those in rugged environments.

Display Quality

The F31 Pro+ sports a 6.8-inch Full HD+ AMOLED display with a 120 Hz refresh rate, delivering a vibrant and smooth visual experience. Unlike the F29 Pro’s quad-curved screen, the flat display reduces glare and accidental touches, making it ideal for gaming and media consumption. With a 93.5% screen-to-body ratio and ultra-slim 1.8 mm bezels, the phone offers an immersive viewing experience.

Brightness and Visibility

The display peaks at 1,600 nits, bright enough for outdoor use under direct sunlight, as confirmed during our tests. While it lacks HDR certification, the panel produces deep blacks, vibrant colors, and high contrast, making YouTube videos and Netflix streams visually stunning. We played a 2160p video in full-screen mode, and the colors popped with excellent clarity, though HDR support would have elevated the experience further.

Display Features

• Flicker-Free Technology: With 2,160 Hz PWM dimming, the display minimizes eye strain in low-light conditions.
• Splash Touch and Glove Touch: The screen responds accurately even with wet hands or gloves, a boon for rainy days or outdoor activities.
• Gorilla Glass Victus 2: Ensures scratch resistance and durability.

Display Takeaway

The F31 Pro+’s 6.8-inch AMOLED display is a standout, offering smooth scrolling, vibrant visuals, and excellent outdoor visibility. The flat screen is a welcome upgrade over the F29 Pro’s curved display, prioritizing usability without sacrificing aesthetics. For media enthusiasts and casual users, this display delivers a premium experience under ₹35,000.

Camera Performance

The OPPO F31 Pro+ 5G retains a camera setup similar to the F29 Pro, with some tweaks for improved performance. The rear features a dual-camera system:

• 50 MP Main Camera (f/1.8, OIS): Captures detailed, vibrant shots with optical image stabilization.
• 2 MP Monochrome Sensor (f/2.4): Enhances depth and black-and-white photography.
• Front Camera: 32 MP (f/2.0) for high-resolution selfies.

Rear Camera Performance

In daylight, the 50 MP main camera produces vibrant, slightly boosted colors with decent dynamic range. During our tests, normal mode shots were sharp, with good detail retention up to 2x digital zoom. Portrait mode excelled, with accurate edge detection and natural bokeh, though slight over-sharpening was noticeable in close-ups. The monochrome sensor adds creative flair for black-and-white shots but feels underutilized compared to a potential ultra-wide or telephoto lens.

Selfie Camera

The 32 MP front camera is a highlight, delivering high-detail selfies with balanced skin tones and excellent depth. Indoor and outdoor shots showed consistent quality, making it ideal for vloggers and social media enthusiasts. The AI-enhanced portrait mode ensures crisp results, even in challenging lighting.

Video Capabilities

• Rear Camera: Supports 4K 30fps with OIS and an Ultra Steady mode at 1080p 60fps for smooth footage.
• Front Camera: Also records 4K 30fps, a rarity in this segment.
• Underwater Mode: Leverages the IP69 rating to shoot photos and videos underwater, perfect for poolside vlogs or rainy-day shots.

Our video samples showed decent stabilization and color accuracy, though the lack of 4K 60fps or HDR video is a minor drawback compared to premium rivals like the Vivo V40.

Camera Takeaway

The F31 Pro+’s camera system is reliable, with the 50 MP OIS main camera and 32 MP selfie camera delivering impressive results for the price. However, the absence of an ultra-wide or telephoto lens limits versatility compared to competitors like the Redmi Note 14 Pro+. For casual photographers and selfie lovers, it’s a solid performer, but enthusiasts may crave more lens options.

Performance & Gaming

Processor and Benchmarks

The F31 Pro+ is powered by the Qualcomm Snapdragon 7s Gen 3, a 4nm chipset that marks a significant upgrade over the F29 Pro’s processor. With an Antutu score of over 9 lakh (compared to ~7 lakh for the F29 Pro), it offers robust performance for multitasking, gaming, and daily use. Our CPU throttle test showed a 91% stability rating, with minimal performance drops even under sustained loads, thanks to the 5,290 mm² Super Cool VC Cooling System—the largest in OPPO’s F-series.

Gaming Experience

We tested popular titles like BGMI and Call of Duty: Mobile at Ultra HD settings with 60fps enabled. The F31 Pro+ handled these games smoothly, with no noticeable lag or frame drops during intense sessions. Graphics were crisp, and the 120 Hz display ensured fluid visuals. The Dual Engine Fluency System and Outdoor Mode 2.0 optimized performance, keeping the phone cool even at 43°C ambient temperatures. The cooling system effectively managed heat during 30-minute gaming sessions, a step up from the F29 Pro’s thermal performance.

RAM and Storage

Available in two variants:

• 8 GB RAM + 256 GB Storage (LPDDR4X, UFS 3.1)
• 12 GB RAM + 512 GB Storage (LPDDR4X, UFS 3.1)

The LPDDR4X RAM and UFS 3.1 storage ensure fast app launches and smooth multitasking, with the 12 GB variant offering future-proofing for heavy users.

Performance Takeaway

The Snapdragon 7s Gen 3, paired with an advanced cooling system, makes the F31 Pro+ a gaming and multitasking beast in the mid-range segment. Its performance leap over the F29 Pro ensures lag-free experiences, making it ideal for gamers and power users on a budget.

Battery & Charging

Battery Capacity

The standout feature of the F31 Pro+ is its 7,000 mAh battery, a significant upgrade from the F29 Pro’s 6,000 mAh. This massive capacity promises up to two days of moderate use, including streaming, gaming, and social media. In our tests, the phone lasted over 30 hours with mixed usage (4G, Wi-Fi, gaming, and video playback), making it a champion for users who hate frequent charging.

Charging Speed

The included 80W SUPERVOOC charger juices up the 7,000 mAh battery from 0–50% in about 25 minutes and a full charge in under 60 minutes. The charger’s compact design and the durable USB-A to USB-C cable add convenience. Wireless charging is absent, but at this price point, the fast wired charging is more than sufficient.

Battery Takeaway

The 7,000 mAh battery is a game-changer, offering unmatched endurance in the mid-range segment. Combined with 80W fast charging, it’s perfect for users who need a phone that lasts and recharges quickly, from students to professionals.

Software & AI Features

Running ColorOS 15 based on Android 15, the F31 Pro+ delivers a smooth and feature-rich software experience. OPPO promises 2 years of OS updates and 3 years of security patches, ensuring longevity up to 2028. The interface is clean, with minimal bloatware, and includes a suite of AI features that enhance usability:

• AI Perfect Shot: Fixes closed eyes or motion blur in photos.
• AI Editor 2.0: Re-composes photos for better framing.
• AI Clarity Enhancer: Sharpens blurry images.
• AI Reflection Remover: Eliminates unwanted reflections.
• AI Eraser 2.0: Removes objects from photos seamlessly.
• AI Call Assist: Enhances call clarity with noise reduction.
• Live Gemini: An AI assistant for quick queries, powered by Google’s Gemini model.

These AI tools are practical for content creators and casual users, making photo editing and call quality more intuitive. The Dual Engine Fluency System ensures lag-free app switching and multitasking, even with multiple apps open.

Software Takeaway

ColorOS 15 is polished and packed with AI-driven features that add value. The 2+3-year update commitment is competitive, though some rivals like Samsung offer longer support. The software’s smoothness complements the hardware, making the F31 Pro+ a joy to use.

Audio & Connectivity

Audio Quality

The F31 Pro+ features stereo speakers with a 300% volume boost, delivering loud and clear audio. In our tests, the speakers handled music, videos, and gaming with impressive clarity, though bass depth is average compared to premium phones like the OnePlus Nord 4. The noise-canceling microphone ensures clear calls, even in noisy environments.

Connectivity

• 5G+ Support: With MIMO 4×4 and Hunter Antenna Architecture for faster, stable connections.
• Network Boost Chip S1: Enhances signal strength in low-coverage areas.
• DSDA (Dual SIM Dual Active): Allows simultaneous use of two 5G SIMs.
• Wi-Fi 6, Bluetooth 5.3, NFC: Comprehensive connectivity options.

Connectivity Takeaway

The F31 Pro+ excels in audio and connectivity, offering loud stereo speakers and robust 5G performance. It’s well-suited for urban users and those in areas with spotty network coverage, thanks to the Network Boost Chip.

Pricing & Variants

While exact pricing is yet to be confirmed, the F31 Pro+ is expected to retail around ₹33,000–35,000 (ex-showroom) for the 8 GB + 256 GB variant, with the 12 GB + 512 GB model closer to ₹37,000. As an offline-centric phone, prices may be slightly higher in retail stores compared to online platforms like Flipkart or Amazon. The F-series’ offline focus justifies the premium, with OPPO’s strong retail presence ensuring easy availability across India.

Variants

• 8 GB RAM + 256 GB Storage: Ideal for most users.
• 12 GB RAM + 512 GB Storage: For power users and content creators.

Pricing Takeaway

At an estimated ₹35,000, the F31 Pro+ offers strong value with its massive battery, durable build, and smooth performance. However, it faces competition from online-focused brands like Xiaomi and Realme, which may offer similar specs at lower prices.

Comparison with OPPO F29 Pro

The F31 Pro+ builds on the F29 Pro with noticeable upgrades:

• Display: Quad-curved (F29 Pro) to flat 6.8-inch AMOLED (F31 Pro+), improving usability.
• Processor: Snapdragon 7s Gen 3 (9 lakh+ Antutu) vs F29 Pro’s chipset (~7 lakh Antutu).
• Battery: 7,000 mAh vs 6,000 mAh, with faster 80W charging.
• Camera: Similar 50 MP OIS + 2 MP setup, but enhanced selfie performance.
• Durability: Same IP69 and military-grade build, no downgrade here.

The F31 Pro+’s flat display, performance boost, and larger battery are significant improvements, though the camera setup could have included an ultra-wide or telephoto lens for greater versatility.

Pros & Cons

✅ Pros

• Massive 7,000 mAh Battery: Exceptional endurance with 80W fast charging.
• IP69 & Military-Grade Durability: Survives drops, water, and harsh conditions.
• Smooth 120 Hz AMOLED Display: Vibrant and flicker-free with slim bezels.
• Powerful Snapdragon 7s Gen 3: Handles gaming and multitasking with ease.
• AI-Packed Software: ColorOS 15 with practical AI features for photos and calls.

❌ Cons

• No Ultra-Wide or Telephoto Lens: Camera versatility lags behind competitors.
• No HDR Video Support: Limits video quality for content creators.
• Polycarbonate Build: Feels less premium than metal-framed rivals.
• Offline-Centric Pricing: May be pricier than online-focused alternatives.

Competition Check

The F31 Pro+ competes in India’s crowded mid-range segment. Here’s how it stacks up:

• Redmi Note 14 Pro+ (₹32,999, 8 GB + 256 GB):
  • Pros: 50 MP triple camera (including ultra-wide), 6,200 mAh battery, Gorilla Glass Victus.
  • Cons: Dimensity 7300 Ultra is slightly less powerful, no IP69 rating.
• Realme 13 Pro+ (₹34,999, 8 GB + 256 GB):
  • Pros: 50 MP periscope telephoto, 120 Hz AMOLED, sleek design.
  • Cons: Smaller 5,200 mAh battery, less durable build.
• Vivo T3 Pro 5G (₹31,999, 8 GB + 256 GB):
  • Pros: Snapdragon 7 Gen 3, 120 Hz AMOLED, slim design.
  • Cons: Smaller 5,500 mAh battery, IP64 rating.

The F31 Pro+’s massive battery and durability give it an edge for users prioritizing longevity and ruggedness, but its camera setup falls short of rivals with ultra-wide or telephoto lenses.

Verdict: Should You Buy the OPPO F31 Pro+ 5G?

The 2025 OPPO F31 Pro+ 5G is a powerhouse in the mid-range segment, combining a massive 7,000 mAh battery, IP69 durability, and a smooth 120 Hz AMOLED display. Its Snapdragon 7s Gen 3 processor and advanced cooling system make it a gaming and multitasking beast, while ColorOS 15’s AI features add practical value for photography and daily use. The shift to a flat display is a user-friendly upgrade, and the military-grade build ensures it can handle India’s toughest conditions.

However, the lack of an ultra-wide or telephoto lens limits its camera versatility, and the polycarbonate build may feel less premium compared to metal-framed rivals. At an estimated ₹35,000, it’s a strong contender for offline buyers, but online-focused brands like Redmi and Realme offer similar specs at lower prices.

Who Should Buy It?

• Battery Enthusiasts: The 7,000 mAh battery is unmatched for all-day use.
• Outdoor Users: IP69 and military-grade durability suit rugged lifestyles.
• Casual Gamers: Smooth 60fps gaming with minimal heating.
• Selfie Lovers: The 32 MP front camera excels for social media.

Who Should Look Elsewhere?

• Photography Buffs: Lack of ultra-wide or telephoto lenses may disappoint.
• Budget Shoppers: Online brands offer better value under ₹30,000.
• Premium Build Seekers: Metal-framed phones feel more luxurious.

The OPPO F31 Pro+ 5G is the smoothest and most durable F-series phone yet, perfect for users who value battery life and ruggedness over camera versatility. If you’re in India’s offline market and need a reliable, long-lasting smartphone, this is a top pick for 2025.

Top 10 Reasons to Buy OPPO F31 Pro+ 5G

What do you think of the OPPO F31 Pro+ 5G?

Share your thoughts in the comments, and let us know if it’s your next smartphone pick! For a chance to win one of two special edition F31 Pro+ boxes, like this article, share it on social media, comment with your honest feedback, and follow the steps in the giveaway link provided.

Source: Adapted from OPPO F31 Pro+ 5G Unboxing & Test (YouTube) and industry insights.