Oppo F31 Series India Launch – Price, Features, Specifications, and Availability
Introduction
The Indian smartphone landscape in September 2025 has just witnessed the grand arrival of the Oppo F31 Series, consisting of the Oppo F31 Pro+, F31 Pro, and F31. Designed to directly address the unique demands of Indian consumers—from small business owners and delivery riders to students and gig professionals—this trio doesn’t just prioritize sleek looks or raw performance. Instead, Oppo places a clear spotlight on military-grade durability, uninterrupted battery life, advanced thermal control, and AI-powered experience—all at mid-range price tags. In this blog post, we’ll break down what each variant brings to the table in terms of design, durability, display, performance, battery, charging, thermal management, cameras, special AI features, price, availability, and daily usability—with multiple credible sources woven throughout.
Series Overview: Rugged, Reliable, and Ready for India
The Oppo F31 Series marks an aggressive expansion in India’s mid-range market and has been engineered around three central themes: resilience for the rough Indian climate, lasting stamina, and smooth intelligent performance. Oppo’s official statements and supporting press reports emphasize that these handsets have been rigorously tested to withstand extreme heat (up to 43°C), accidental drops, everyday spills, and even high-pressure water jets. Notably, all models offer IP66, IP68, and IP69 protection—a triad of dust and water resistance certifications that outclass nearly all rivals in the sector2. Their core structural components—Aerospace-grade AM04 aluminium frames, AGC DT-Star D+ reinforced glass, and a 360° Armour Body—help deliver MIL-STD-810H military standard drop and environment toughness, while maintaining a slim, urban-friendly profile.
This logic fits a major shift in Indian consumer preference: surveys reveal that durability, battery, and accident resistance now rank as top priorities among smartphone buyers4.
Oppo F31 Series: Specifications & Pricing At A Glance
| Model | Display | Processor | RAM/Storage | Rear Cameras | Front Camera | Battery/Charging | IP Rating/Durability | Price (₹) | Colours | Sale Date |
|---|---|---|---|---|---|---|---|---|---|---|
| F31 Pro+ | 6.8″ FHD+ AMOLED 120Hz, 1600nits | Snapdragon 7 Gen 3 (4nm, 8-core, Adreno 720) | 8/256 & 12/256GB | 50MP+2MP mono, OIS | 32MP | 7000mAh/80W FastCharge | MIL-STD-810H, IP66/IP68/IP69 | 32,999 (8/256), 34,999 (12/256) | Gemstone Blue, Himalayan White, Festival Pink | Sept 19, 2025 |
| F31 Pro | 6.57″ FHD+ AMOLED 120Hz, 1400nits | Dimensity 7300 Energy (4nm, Mali-G615) | 8/128, 8/256, 12/256GB | 50MP+2MP mono, OIS | 32MP | 7000mAh/80W FastCharge | MIL-STD-810H, IP66/IP68/IP69 | 26,999 (8/128), 28,999 (8/256), 30,999 (12/256) | Desert Gold, Space Grey | Sept 19, 2025 |
| F31 | 6.57″ FHD+ AMOLED 120Hz, 1400nits | Dimensity 6300 (6nm, Mali-G57) | 8/128, 8/256GB | 50MP+2MP portrait, OIS | 16MP | 7000mAh/80W FastCharge | MIL-STD-810H, IP66/IP68/IP69 | 22,999 (8/128), 24,999 (8/256) | Midnight Blue, Cloud Green, Bloom Red | Sept 27, 2025 |
In the table above, readers can immediately compare key specifications, durability, and pricing of each Oppo F31 Series model. For a deeper understanding, let’s examine each point in detail and explain what makes the F31 family stand out in a crowded midrange market.
Design & Build: Military-Grade Resilience, Premium Style
Structure, Materials, and Aesthetics
The entire F31 lineup shares Oppo’s 360° Armour Body concept. This is more than just marketing jargon: it refers to a multi-layer “airbag” internal design—engineered with expanded foam, shock-absorbing silicone pads, and diamond-like corner reinforcements surrounding all critical components (battery, speakers, vibration motor, camera module). This makes the phones exceptionally resilient to everyday accidents, with Oppo claiming drop protection for up to 1.8 meters—a substantial step above typical glass sandwiches3. The Aerospace-grade AM04 aluminium alloy structural frame is stated to be 10% stronger than standard frames, directly improving resistance against bends, drops, and torsion.
For display protection, AGC DT-Star D+ reinforced glass covers the front of each device, providing enhanced scratch and crack resistance in line with today’s best toughened glass solutions3.
Aesthetically, Oppo avoids the “brick phone” look with ultra-slim, ergonomic profiles and high screen-to-body ratios. The F31 Pro+ measures just 7.7mm thick and weighs 195g (Blue) or 204g (White/Pink), while the F31 Pro is a svelte 7.96mm/190g and the entry F31 is 8.0mm/185g. Each model features a different camera module layout on the rear, with the Pro+ sporting a circular island for extra flagship polish, while the F31 has a rounded-square look. Unique finishes such as Gemstone Blue’s shimmer, Himalayan White’s matte, and Festival Pink’s patterned sparkle ensure that buyers have options from subtle elegance to festive boldness5.
Colour, Grip, and Usability
The colour schemes reflect current Indian preferences for both contemporary and “festival” hues, letting users pick conservative or vibrant finishes. The under-display optical fingerprint sensors across the lineup improve security and ergonomics, while perfectly flat screens and symmetrical slim bezels offer an immersive in-hand and in-pocket feel—an especially important consideration for daily commuters and professionals.
Durability Certifications
Unlike many “IP68” phones that focus only on water and dust, the F31 Series boasts triple IP ratings (IP66, IP68, and IP69). This means:
- IP66: Strong jet water and dust jet protection.
- IP68: Full submersion to 1.5m for 30 minutes.
- IP69: Withstands high-pressure 80°C water jets, useful for true rugged performance if splashed with boiling water, detergent, or during deep cleaning.
Moreover, all models are MIL-STD-810H certified for environmental toughness—covering drops, shock, salt fog, sand, temperature extremes, and rain2.
This robustness is not just for show; Oppo officially claims that the F31 series was tested against 18 common liquids (including tea, coffee, soda, soapy water, and even wine)—a true India-centric durability measure. An innovative speaker drainage system emits low-frequency pulses to clear water, keeping audio clear even post-submersion.
Display: Vivid, Smooth, and Bright
Panel & Quality
- F31 Pro+: 6.8-inch flat AMOLED, FHD+ (2800×1280), 120Hz refresh rate, 1.07 billion colours, 1600 nits peak brightness, 2160Hz PWM dimming.
- F31 Pro/ F31: 6.57-inch flat AMOLED, FHD+ (2372×1080), 120Hz, 100% DCI-P3, 1400 nits peak brightness, 2160Hz PWM.
All models supply elite color accuracy (100% DCI-P3) and PWM dimming for flicker-free viewing in low light, a major benefit for Indian users who often use their phones indoors or in sunlight. AGC DT-Star D+ glass on all displays means maximum scratch and impact resistance, while the touch sampling rate up to 240Hz contributes to almost instantaneous UI responsiveness.
Daily Usability Features
Outdoor Mode 2.0, tuned specifically for riders and field workers, ramps up screen brightness, volume, and network priority for delivery, navigation, and quick QR code scanning. “Glove Touch” is also available, allowing use even during monsoons or winter with gloves on, while special waterproofing measures and speaker sealing let users confidently handle calls, scans, and navigation when soaked—without loss of clarity or input4.
Performance: Power for Professionals, Students, and Multitaskers
Processors and Smoothness
The F31 Series is differentiated by chipset across three models:
- F31 Pro+: Snapdragon 7 Gen 3 (4nm, 8-core, Adreno 720 GPU), AnTuTu 890,000+, flagship-class multitasking.
- F31 Pro: MediaTek Dimensity 7300 Energy (4nm, 8-core, Mali-G615 MC2 GPU), AnTuTu 730,000+, highly efficient.
- F31: MediaTek Dimensity 6300 (6nm, 8-core, Mali-G57 MC2 GPU).
Each supports up to 12GB LPDDR4X RAM, 12GB virtual RAM expansion (total up to 24GB), with UFS 3.1 storage for F31 Pro/Pro+ and UFS 2.2 for the entry model, meaning blazing fast app launches and large file transfers even in the base model1.
ColorOS 15, built on Android 15, is integrated with Oppo’s Dual-Engine Smoothness System (Trinity Engine and Luminous Rendering Engine). This software pairing is designed for “six zeros”: No lag, no latency, no flicker, no crash, no mislaunch, no freeze—even while performing multiple quick application launches or switching navigation, music, and work apps in sweltering heat3.
Long-term Performance
Oppo guarantees 72-month (6-year) Fluency Certification, meaning that the hardware and storage algorithms keep the phone running smooth for up to six years—doubling industry norms. Storage defragmentation and intelligent pre-loading ensure minimum slowdown as the device ages, and the F31 Pro+ in particular passed the SGS High-Temperature Fluency A+ test for sustained speed above 40°C ambient temperatures2.
Battery, Charging, and Power Features: Built for the Indian Day
Battery Specs and Longevity
- All models pack a massive 7,000mAh battery—the largest cell available in the segment, exceeding almost all rivals. Oppo claims that with one charge, a F31 phone will comfortably last two days of “normal use” or a full day of heavy multitasking, perfect for gig and field professionals2.
Fast Charging & Endurance Tech
- 80W SUPERVOOC Flash Charge: Zero to 58% in 30 minutes; full in just over an hour. This means users can charge up during a fast tea break and be ready for hours of field work.
- Reverse Charging: Each device can act as a power bank, capable of topping up accessories, smartwatches, or even another phone.
- Bypass Charging: A boon for gamers and delivery riders, this feature routes power directly to the phone’s motherboard during intense tasks like gaming—minimizing battery heat, prolonging cell life, and preventing slowdowns due to thermal throttling8.
- Charging Durability: The lithium battery retains over 80% health even after 1,800 charge cycles (about 5 years of daily charging)—a breakthrough in battery longevity, validated by long-term lab tests5.
Real-World Daily Change
This scale of battery is transformative for the tough Indian workday. Users working long shifts, delivery agents away from charging points, or students on the move can all anchor their day around a single charge, with no power-bank anxiety. Rapid top-ups and resilience even under temperature stress make Oppo’s F31 Series stand out as the most practical battery-focussed option in the mid-range for 20253.
Advanced Thermal Management: Beat the Indian Summer
Cooling System Dimensions
Indian users are all too familiar with slowdowns and device shutdowns in peak summer temperatures. The F31 Series is uniquely engineered for continuous use up to 43°C ambient heat, thanks to oversized vapour chambers and multi-layered graphite cooling:
- F31 Pro+: 5,219mm² vapour chamber—largest in Oppo’s mid-range arsenal.
- F31 Pro: 4,363mm².
- F31: 4,300mm².
This is supplemented by multi-layer expanded graphite sheets, which dissipate CPU and PCB heat more efficiently. Oppo claims overall 21% better thermal efficiency than the previous generation, with high thresholds for thermal throttling (44-45°C), meaning these smartphones stay fast, responsive, and safe even during summer outdoor tasks or demanding gaming sessions7.
Camera and AI Experience: Studio in Your Pocket
Rear and Front Cameras
Despite varied pricing, the F31 Series largely standardizes its camera hardware for photography consistency:
- Rear Cameras:
- 50MP OmniVision OV50D40 main sensor with OIS for sharp, steady shots and night photography.
- Pro+/Pro feature an additional 2MP monochrome sensor for depth and contrast; the base F31 employs a 2MP portrait sensor.
- Front Camera:
- Pro+/Pro: 32MP (Galaxy Core 32E2) for high-res selfies and group shots.
- F31: 16MP (Sony IMX480).
All models can shoot 4K video at 30fps, with underwater photography/videography up to 1.5 meters—a function made possible by IP68/IP69 ratings without needing a specialty case.
AI Imaging Suite
The F31’s camera experience is deeply AI-enhanced:
- AI Eraser 2.0: One-tap removal of unwanted bystanders or distractions.
- AI Unblur & Clarity Enhancer: Restores sharpness in moving subjects or low light.
- AI Reflection Remover: For glass/window shots.
- AI Group Compositor: Seamlessly creates group shots from multiple frames.
- Motion Photo & Dual-View: For both front and rear engaging media.
- HDR and studio AI tuning: Ensure balanced exposure, skin tone, and detail in every scene.
AI productivity tools such as AI VoiceScribe and AI Call Assistant handle live transcription, translation (with Gemini AI integration), and voice summarization for meetings or calls in 29 languages. The series even supports OPPO Docs AI for document scanning, summarization, and translation, bridging the gap between consumer fun and business-grade utility3.
Connectivity and Daily Features
Communication & Navigation
- Dual-SIM 5G, WiFi 6, and Bluetooth 5.4 connect the phone to high-speed Indian networks.
- NetworkBoost S1 Chip (Pro+ only): Proprietary hardware acceleration ensures super-strong 5G and GPS signals—even in underground garages or rural highways.
- Dual-frequency GPS, AI LinkBoost 3.0, Hunter Antenna Architecture: For maximum range and accuracy in Indian urban and suburban environments, ensuring orders, navigation, and rideshare info work everywhere.
Extra Convenience
- USB-C audio and Hi-Res stereo sound for immersive video, calls, and alerts—even in crowded or noisy streets.
- Under-display fingerprint, facial recognition, and anti-theft protection for secure usage.
- Android 15/ColorOS 15: 2 years of guaranteed OS updates and 3 years of security patches ensure futureproofing.
Pricing, Availability, Launch Offers
Pricing and Variants
| Model | RAM + Storage | Price |
|---|---|---|
| F31 Pro+ | 8/256GB | ₹32,999 |
| 12/256GB | ₹34,999 | |
| F31 Pro | 8/128GB | ₹26,999 |
| 8/256GB | ₹28,999 | |
| 12/256GB | ₹30,999 | |
| F31 | 8/128GB | ₹22,999 |
| 8/256GB | ₹24,999 |
Colours
- F31 Pro+: Gemstone Blue, Himalayan White, Festival Pink
- F31 Pro: Desert Gold, Space Grey
- F31: Midnight Blue, Cloud Green, Bloom Red
Availability
- F31 Pro+ & F31 Pro – On sale from September 19, 2025.
- F31 – On sale from September 27, 2025.
- Available at: Oppo e-store, Flipkart, Amazon, and major offline retailers10.
Launch Promotions
- Up to 10% bank cashback (SBI, HDFC, Kotak), up to 6 months no-cost EMI, and extra device exchange bonuses (up to ₹3,500).
- 180-day complimentary damage protection (including liquid/rain/accident damage).
- Zero-interest EMI, pre-book and launch-day exclusive discounts12.
Competitive Positioning: How Does F31 Stack Up?
Durability and Battery Clinch the Edge
In direct competition, phones like the Xiaomi Redmi Note 13 Pro Plus 5G or Samsung Galaxy A55 fail to match the F31 Series on durability, battery, and environmental certifications. Xiaomi’s 200MP camera offers more megapixels, but it comes with a smaller battery (5,100mAh vs 7,000mAh) and lower IP rating (IP54/IP68 vs IP69/IP68/IP66). Samsung’s A55 has only a 5,000mAh cell and no IP69 nor MIL-STD-810H—meaning they can’t match the all-weather, multi-day utility of the F31 family for Indian outdoor professionals14.
AI and Productivity Edge
The leading few might equal F31’s camera resolution, but they fall short on AI-powered tools for real-time translation, document scanning, or note organization. For the Indian multitasker, Oppo’s Gemini/AIO integration is an unusual and substantial advantage.
What Makes Oppo F31 Series Stand Out for India?
Tailored for the Indian Context
- Extreme Weather Performance: Optimized for daily highs in excess of 40°C, with vapour chamber cooling and software to prevent heat slowdowns.
- Rugged Build for Indian Streets: Multiple certifications mean full protection against India’s monsoon, market dust, kitchen spills, and the occasional chai.
- Unmatched Battery Longevity: Five-year health retention and enough power for rural field work or long urban shifts.
- AI for Work and Life: Multilingual transcription, real-time call translation, smart productivity tools help users bridge regional and professional divides.
Who Should Buy Each Variant?
- Oppo F31 Pro+: For those who want the very best—flagship-grade performance, design and AI, massive battery, crystal-clear 4K/underwater shooting, and all the rugged extras.
- Oppo F31 Pro: The sweet spot. For those who want premium battery/camera/features but would save a few thousand, getting almost all productivity/AI and thermal perks.
- Oppo F31: For students, first-time 5G buyers, or those wanting rugged daily reliability and all-day battery, while keeping budget in mind.