Oppo launches F31 5G series in India with 7000mAh battery, aluminium frame, and more: Price, specs

Oppo F31

Oppo India has unveiled its new F31 5G series, positioning it as the most durable and fluid smartphone range under Rs 35,000. The line-up includes the F31 Pro+, F31 Pro, and F31, each built with reinforced frames, tougher glass, advanced cooling, and reliable connectivity tailored for Indian conditions.

Price and availability

The F31 5G series will be available from 19 September with prices starting at Rs 22,999. Buyers can also avail cashback, EMI plans, and accidental damage protection offers. Here are the prices of eachv ariant:

F31 Pro+ 5G: Rs 32,999 (8+256GB) and Rs 34,999 (12+256GB)
F31 Pro 5G: Rs 26,999 (8+128GB), Rs 28,999 (8+256GB) and Rs 30,999 (12+256GB)
F31 5G: Rs 22,999 (8+128GB) and Rs 24,999 (8+256GB) available from September 27

Key features

The F31 Pro+ runs on Qualcomm’s Snapdragon 7 Gen 3, while the Pro and F31 use MediaTek’s Dimensity 7300 Energy and Dimensity 6300 chipsets respectively. All support up to 24GB RAM (12GB physical + 12GB virtual) and UFS 3.1 storage. Running ColorOS 15, the phones introduce features like intelligent pre-loading, improved touch response, and a one-click performance rejuvenation tool.

The F31 series uses a 360° Armor Body design with an aerospace-grade AM04 aluminium alloy frame that’s 10% stronger than its predecessor. The AGC DT-Star D+ glass offers added screen protection, while triple IP certifications (IP66, IP68, and IP69) make the devices resistant to dust, immersion, and even high-pressure water jets at up to 80°C. Oppo says the phones can withstand oily fingers, rain, and even 18 everyday liquids like tea and detergent water.

A major focus is heat management. The F31 Pro+ includes a 5,219 mm² vapour chamber, while the Pro and base F31 use smaller but still robust cooling designs. Oppo’s Dual-Engine Smoothness System—featuring the Trinity Engine and Luminous Rendering Engine—keeps apps responsive, reduces installation times, and ensures six years of consistent performance with TÜV Rheinland’s 72-Month Fluency Certification.

Cameras and AI tools

All three models sport a 50MP OIS main sensor, with the Pro+ and Pro adding a 32MP selfie shooter (16MP on the base model). AI tools such as AI Eraser 2.0, AI Unblur, and Reflection Remover aim to enhance everyday photography. Productivity gets a boost with AI VoiceScribe for transcription and AI Call Assistant with live translations in nine Indian languages.

The series packs a 7,000mAh battery with 80W SUPERVOOC fast charging, promising 58% charge in 30 minutes. Reverse charging and bypass charging are also supported.