OPPO has expanded its popular F-series lineup in India with the OPPO F31 5G series, a new mid-range smartphone line designed to deliver extreme durability, high-end battery performance, and a polished design. The series consists of three models—OPPO F31 Pro+ 5G, OPPO F31 Pro 5G, and the base OPPO F31 5G.
With its 7,000mAh battery, aerospace-grade aluminium frame, and IP66/IP68/IP69 certifications, OPPO is targeting users who demand ruggedness without compromising performance or style. Let’s explore every detail, including pricing, specifications, and what makes the series stand out in India’s competitive mid-range smartphone market.
OPPO F31 5G Series: Key Highlights
- Massive Battery: A 7,000mAh battery across all models, one of the largest in its class.
- Premium Build: Aerospace-grade aluminium frame with AGC DT-Star D+ protective glass.
- Rugged Certifications: Triple IP ratings (IP66, IP68, IP69) and MIL-STD-810H certification for dust, water, and extreme temperature resistance.
- Fast Charging: 80W SUPERVOOC charging, plus reverse and bypass charging modes.
- Performance Options: Snapdragon 7 Gen 3 on the Pro+, MediaTek Dimensity 7300 on the Pro, and Dimensity 6300 on the base model.
- Camera Setup: All three phones feature a 50MP primary camera with OIS, while the Pro+ boasts a 32MP front camera.
- Display: AMOLED panels with 120Hz refresh rates across all models.
Full Specifications
| Feature | OPPO F31 Pro+ 5G | OPPO F31 Pro 5G | OPPO F31 5G |
|---|---|---|---|
| Display | 6.8-inch AMOLED, 120Hz refresh rate | 6.5-inch AMOLED, 120Hz | 6.5-inch AMOLED, 120Hz |
| Chipset | Snapdragon 7 Gen 3 | MediaTek Dimensity 7300 | MediaTek Dimensity 6300 |
| RAM & Storage | Up to 12GB RAM + 256GB UFS 3.1 | Up to 12GB RAM + 256GB | 8GB RAM + 128/256GB |
| Battery | 7,000mAh, 80W SUPERVOOC | 7,000mAh, 80W SUPERVOOC | 7,000mAh, 80W SUPERVOOC |
| Rear Cameras | 50MP main + 2MP depth | 50MP main + 2MP depth | 50MP main + 2MP depth |
| Front Camera | 32MP | 32MP | 16MP |
| Build & Protection | Aluminium frame, AGC glass, IP66/IP68/IP69 | Same | Same |
| Software | ColorOS 15 (Android 15) | ColorOS 15 | ColorOS 15 |
| Weight & Thickness | ~195g, 7.7mm | ~191g, 7.9mm | ~187g, 8.0mm |
Price and Availability
| Model | Variant | Price (INR) |
|---|---|---|
| OPPO F31 Pro+ 5G | 8GB + 256GB | ₹32,999 |
| 12GB + 256GB | ₹34,999 | |
| OPPO F31 Pro 5G | 8GB + 128GB | ₹26,999 |
| 8GB + 256GB | ₹28,999 | |
| 12GB + 256GB | ₹30,999 | |
| OPPO F31 5G | 8GB + 128GB | ₹22,999 |
| 8GB + 256GB | ₹24,999 |
- Sale Dates: The Pro and Pro+ will be available from September 19, 2025, while the base model launches on September 27, 2025.
- Color Options:
- Pro+: Gemstone Blue, Himalayan White, Festival Pink
- Pro: Desert Gold, Space Grey
- Base: Midnight Blue, Cloud Green, Bloom Red
Design and Durability
OPPO has emphasized ruggedness in the F31 series. The aluminium alloy frame (AM04) and reinforced AGC glass provide drop resistance, while the triple IP ratings ensure protection against dust, immersion in water, and high-pressure sprays. The MIL-STD-810H certification guarantees that these phones can withstand challenging environments, including extreme temperatures.
Despite the added protection, OPPO has managed to keep the series slim and stylish, with all models weighing under 200 grams and measuring under 8mm in thickness.
Performance and Gaming
With the Snapdragon 7 Gen 3 on the Pro+ and MediaTek’s Dimensity series on the Pro and base variants, OPPO is offering solid performance for multitasking and gaming. Vapor chamber cooling and graphite layers help control temperatures during heavy use, especially in India’s hot climate.
All models support 5G connectivity, Wi-Fi 6, and Bluetooth 5.4, ensuring smooth gaming, streaming, and browsing experiences.
Camera Capabilities
The 50MP primary camera with OIS across all models is designed for crisp photography, even in low light. The Pro+ and Pro versions get a 32MP selfie camera with AI enhancements, while the base version features a 16MP front shooter.
Features like AI Unblur, AI Portrait, and AI Video HDR improve the photography experience, while OPPO’s AI Eraser tool allows quick object removal from photos.
Battery Life and Charging
The standout feature of this series is the massive 7,000mAh battery, a rarity in this price range. Combined with 80W SUPERVOOC charging, users can expect a 50–60% charge in under 30 minutes.
The phones also support reverse charging, allowing them to act as power banks for other devices, and bypass charging, which reduces battery wear by powering the phone directly while gaming.
Software and Features
All models ship with ColorOS 15 based on Android 15. OPPO promises three major Android updates and four years of security patches, giving users long-term software reliability.
AI features like AI Call Assistant, AI VoiceScribe, and Smart Image Editing add a productivity boost. ColorOS also includes improved privacy tools, custom themes, and better multitasking with floating windows.
Why the OPPO F31 5G Series Stands Out
- Exceptional Battery Capacity: The 7,000mAh battery sets a new benchmark in the sub-₹35,000 price range.
- Premium Rugged Design: Aerospace-grade aluminium and triple IP ratings provide unmatched durability.
- Balanced Performance: Snapdragon and Dimensity chips deliver smooth performance for day-to-day tasks and gaming.
- AI-Powered Features: Camera enhancements and productivity tools make the series versatile for professionals and creators.
Should You Buy It?
The OPPO F31 5G series is perfect for:
- Users who prioritize battery life and durability.
- Travelers, delivery professionals, and outdoor enthusiasts.
- Shoppers seeking mid-range 5G performance without compromising build quality.
If you’re looking for cutting-edge gaming specs, ultra-fast charging beyond 80W, or premium glass aesthetics, you may want to explore higher-end flagships. However, for most users, the F31 5G series offers outstanding value.
Final Verdict
With its rugged yet premium design, large battery, AI features, and competitive pricing, the OPPO F31 5G series is a strong contender in India’s mid-range smartphone segment. OPPO has successfully combined durability, performance, and practicality into a single package, making it an ideal choice for users who want a smartphone built to last.
