OPPO has officially launched its latest F-series smartphones in India — the OPPO F31, F31 Pro, and F31 Pro+ 5G. Designed for performance, durability, and power efficiency, the lineup brings advanced thermal management systems, massive 7,000mAh batteries, and flagship-grade durability standards. With prices starting at ₹22,999, the series aims to set new benchmarks in the mid-range smartphone segment.

Performance and Thermal Management

The OPPO F31 series focuses heavily on thermal efficiency. All three models feature enlarged vapor chambers, expanded graphite layers, and OPPO’s adaptive heat strategy, raising the throttling threshold to 44–45°C to ensure sustained performance even during intensive tasks like gaming or 4K video recording.

F31 Pro+ 5G:

Powered by Qualcomm Snapdragon 7 Gen 3 (4nm) with an Adreno 720 GPU, offering up to 24GB RAM (12GB physical + 12GB virtual) and UFS 3.1 storage. It houses a 5,219 mm² vapor chamber for advanced heat dissipation.

F31 Pro 5G:

Equipped with MediaTek Dimensity 7300-Energy (4nm), Mali-G615 GPU, and the same RAM/storage configuration. A 4,363 mm² vapor chamber ensures stable temperatures.

F31 5G:

Runs on MediaTek Dimensity 6300 (6nm) with a 4,300 mm² vapor chamber and optimized graphite sheets, improving thermal efficiency by 21% compared to its predecessor.

The Network Boost Chip N1 dynamically manages antenna signals to minimize interference, ensuring smooth connectivity even in weak network zones.

Software and System Fluency

All three smartphones ship with ColorOS 15 based on Android 15, offering OPPO’s Dual-Engine Smoothness System, which integrates:

Trinity Engine for resource allocation

Luminous Rendering Engine for optimized graphics

The series also comes with 72-Month Fluency Protection 2.0, which uses storage defragmentation and intelligent preloading to ensure long-term smoothness. OPPO has promised 2 years of OS updates and 3 years of security updates.

AI-Powered Productivity Tools

OPPO has integrated several AI-first features into the F31 series, enhancing professional and everyday use:

AI VoiceScribe: Records calls/meetings, providing subtitles, real-time translations, and summaries in 29+ languages (including Hindi, English, Kannada).

AI Call Assistant: Uses Google Gemini’s model for real-time call translations.

OPPO Docs: AI-powered document rewriting, summarization, and translations.

AI Notes Assistant: Restructures unorganized notes and corrects errors automatically.

Battery and Charging

A standout highlight of the OPPO F31 series is the 7,000mAh battery across all models, supported by 80W SuperVOOC fast charging. According to OPPO:

0% to 58% in just 30 minutes

Full charge in just over an hour

The phones also support bypass charging, which reduces heating during gaming, and wired reverse charging to power other devices.

Camera Systems

The OPPO F31 series continues the brand’s focus on camera performance:

F31 Pro+ 5G: 50MP OIS main camera (OV50D40 sensor) + 2MP monochrome lens, and a 32MP selfie camera.

F31 Pro 5G: 50MP OIS main camera + 2MP depth lens, with a 32MP selfie camera.

F31 5G: 50MP main camera + two 2MP portrait lenses, with a 16MP front camera.

All models support 4K video recording at 30fps, including 4K underwater photography, thanks to IP68/IP69 protection, making them suitable for extreme outdoor conditions.

Durability and Build

The series is built with 360° Armour Body protection, featuring multi-layer shock absorption and military-grade (MIL-STD 810H) durability. The phones also carry IP66, IP68, and IP69 certifications, protecting them from water, dust, and accidental drops.

OPPO F31 Series Specifications Overview

Displays: Up to 6.8-inch OLED, 120Hz refresh rate, 1400–1600 nits peak brightness, HDR10+, and DT-Star D+ glass protection.

Security: In-display fingerprint sensors + AI Face Unlock.

Connectivity: 5G SA/NSA, Wi-Fi 6, Bluetooth 5.4, USB Type-C, stereo speakers with Hi-Res Audio.

Pricing and Availability

OPPO F31:

8GB + 128GB – ₹22,999

8GB + 256GB – ₹24,999

Colors: Midnight Blue, Cloud Green, Bloom Red

OPPO F31 Pro 5G:

8GB + 128GB – ₹26,999

8GB + 256GB – ₹28,999

12GB + 256GB – ₹30,999

Colors: Desert Gold, Space Grey

OPPO F31 Pro+ 5G:

8GB + 256GB – ₹32,999

12GB + 256GB – ₹34,999

Colors: Gemstone Blue, Himalayan White, Festive Pink

Availability & Launch Offers

Available via OPPO India store, Amazon.in, Flipkart, and offline retailers.

F31 Pro & Pro+ – Available from September 27th.

F31 – Available from September 27th.

Launch Offers:

10% instant bank discount

Exchange bonus up to ₹3,500

Up to 6 months no-cost EMI

Conclusion

The OPPO F31 series raises the bar in the mid-range smartphone market with a powerful mix of performance, massive battery, AI-driven productivity tools, durable design, and high-speed charging. With three models catering to different price points, OPPO is clearly targeting gamers, professionals, and everyday power users who demand a reliable and future-ready smartphone.