Published: September 17, 2025 10 min read By TechFeezy Team Smartphone Review

OPPO F31 Series: Complete Guide & Review 2025

Explore the OPPO F31 Series with detailed specs, features, pricing, and expert reviews of the F31, F31 Pro, and F31 Pro+ 5G models launched in India.

OPPO F31 Series

Introduction

The OPPO F31 series has taken the Indian smartphone market by storm, launching three robust models that redefine expectations for the mid-range segment. Marketed as "Durable Champions," these phones combine flagship-quality durability, competitive performance, and attractive pricing, making them a standout choice in 2025.

Series Overview and Models

The F31 lineup consists of three models targeting different user segments:

  • OPPO F31 5G: Powerhouse entry-level, starting at Rs 22,999.
  • OPPO F31 Pro 5G: Balanced performer, starting at Rs 26,999.
  • OPPO F31 Pro+ 5G: Premium flagship, starting at Rs 32,999.

All models went on sale September 15, 2025, with availability from September 19 for Pro models and September 27 for the base model.

Design and Build Excellence

OPPO F31 Series

Military-Grade Durability

The F31 series sets new standards with comprehensive protection features:

  • Aerospace AM04 Aluminium Alloy Frame for enhanced toughness.
  • 360° Armour Body with multi-layer technology for shock absorption.
  • Triple IP rating (IP66, IP68, IP69) for complete environmental protection.
  • MIL-STD-810H-2022 certified for military-grade durability.

Premium Aesthetics

Despite their robust build, the devices maintain stylish designs:

  • OPPO F31 5G: 185.20 x 75.00 x 8.00mm, 185g, available in Cloud Green, Midnight Blue, Bloom Red.
  • OPPO F31 Pro 5G: 185.20 x 75.00 x 7.50-8.10mm, 191g, in Desert Gold, Space Grey.
  • OPPO F31 Pro+ 5G: 163.1 x 77.6 x 7.7-7.9mm, 195-204g, in Himalayan White, Gemstone Blue, Festival Pink.

Display Technology

AMOLED Brilliance

All models feature premium AMOLED displays:

  • F31 & F31 Pro: 6.5-inch Full HD+ (2372x1080) AMOLED.
  • F31 Pro+: 6.8-inch Full HD+ (2800x1280) AMOLED.

Shared features include 120Hz refresh rate, 1600 nits peak brightness, ultra-slim 1.67mm bezels, and AGC DT Star D glass protection on premium models.

Performance Architecture

OPPO F31 Series

Processing Power

  • OPPO F31 5G: MediaTek Dimensity 6300 (6nm), Octa-core CPU, Mali-G57 MC2 GPU, 8GB RAM, 128GB/256GB UFS 2.2 storage.
  • OPPO F31 Pro 5G: MediaTek Dimensity 7300 Energy (4nm), Octa-core CPU, 8GB/12GB RAM, 128GB/256GB UFS 3.1 storage.
  • OPPO F31 Pro+ 5G: Qualcomm Snapdragon 7 Gen 3 (4nm), Octa-core CPU, Adreno 720 GPU, 8GB/12GB RAM, 256GB UFS 3.1 storage.

Thermal Management

Innovative cooling solutions prevent throttling:

  • F31: 4,300mm² vapor chamber.
  • F31 Pro: 4,363mm² SuperCool VC system.
  • F31 Pro+: 5,219mm² SuperCool VC system (industry-leading).

Camera Capabilities

Rear Camera System

All models feature:

  • 50MP OmniVision 50D40 sensor (f/1.8, OIS).
  • 2MP secondary camera (portrait on F31, monochrome on Pro models).
  • 4K video at 30fps with gyro-EIS and OIS stabilization.

Front Camera Excellence

  • F31: 16MP (f/2.4).
  • F31 Pro & Pro+: 32MP (f/2.4, 4K video).

AI Photography Features

AI enhancements include AI Editor 2.0, AI Perfect Shot, AI Clarity Enhancer, AI Eraser 2.0, and underwater photography modes.

Battery and Charging Revolution

Massive Battery Capacity

All models feature a 7,000mAh battery, offering multi-day usage, 1,800 charge cycles (5-year lifespan), and 80W SUPERVOOC charging (42% in 20 minutes, full in 70 minutes).

Fast Charging Technology

Includes reverse wired charging (10W) and bypass charging for prolonged gaming.

Connectivity and Network Features

Advanced 5G Support

Features dual 5G, Hunter Antenna 2.0, NetworkBoost S1 Chip (Pro+), and AI LinkBoost 3.0.

Additional Connectivity

Includes Wi-Fi 6, Bluetooth 5.4, USB-C 2.0 with OTG, multi-satellite GPS, and NFC (Pro models).

Software Experience

Operating System

ColorOS 15 (Android 15) with 2 years of OS upgrades, 3 years of security patches, and 72-month Fluency Protection 2.0.

AI-Powered Features

Includes Trinity Engine, AI VoiceScribe, AI Call Assistant (Pro+), Outdoor Mode 2.0, Glove Mode, and Splash Touch.

Pricing Strategy and Availability

Competitive Pricing Structure

  • OPPO F31 5G: 8GB+128GB: Rs 22,999; 8GB+256GB: Rs 24,999.
  • OPPO F31 Pro 5G: 8GB+128GB: Rs 26,999; 8GB+256GB: Rs 28,999; 12GB+256GB: Rs 30,999.
  • OPPO F31 Pro+ 5G: 8GB+256GB: Rs 32,999; 12GB+256GB: Rs 34,999.

Launch Incentives

Offers include bank discounts, exchange programs, 180-day damage protection, free EMI up to 12 months, and zero-interest financing.

Competitive Analysis

Market Position

The F31 series competes strongly with:

  • Advantages: Largest 7,000mAh battery, triple IP rating, premium AMOLED displays, competitive pricing.
  • Challenges: Base model’s UFS 2.2 storage, camera versatility not segment-leading, weight due to large battery.

Direct Comparisons

Vs. Vivo V60 (Rs 30,000 segment):

  • OPPO Advantages: Larger battery (7,000mAh vs. 6,500mAh), better durability, lower price.
  • Vivo Advantages: Better processor, more versatile cameras.

Target Demographics

The F31 series caters to:

  • Professionals needing all-day battery and reliable performance.
  • Students seeking affordable, durable devices.
  • Delivery personnel requiring rugged phones with outdoor-optimized software.
  • Content creators and gamers needing capable cameras and thermal management.

Expert Reviews and User Feedback

Professional Assessments

Tech reviewers praise:

  • Exceptional battery endurance.
  • Premium build quality.
  • High-quality display for the price.
  • Effective thermal management and software optimization.

User Experience Reports

Early feedback highlights reliability, durability, exceptional battery life, and stable performance.

Buying Recommendations

Model Selection Guide

  • F31 5G: For battery life and affordability under Rs 25,000.
  • F31 Pro 5G: For balanced performance, better cameras, and storage under Rs 31,000.
  • F31 Pro+ 5G: For top performance, larger display, and premium features under Rs 35,000.

Key Considerations

Strong Points:

  • High-capacity battery and fast charging.
  • Military-grade durability and triple IP protection.
  • Premium AMOLED displays.
  • Competitive pricing and long-term software support.

Potential Limitations:

  • Weight due to large battery.
  • Base model’s storage speed.
  • No wireless charging.
  • Limited camera zoom capabilities.

Final Verdict

The OPPO F31 series is a breakthrough in the mid-range smartphone segment, blending flagship-quality durability, competitive performance, and attractive pricing. Tailored for the Indian market, it offers exceptional battery life, robust build, and reliable performance. With modern cameras, premium materials, and strong after-sales support, the F31 series is a compelling choice for diverse users.

Overall Rating: 4.2/5

The OPPO F31 series establishes itself as a formidable contender in India’s crowded mid-range smartphone market, balancing durability, performance, and value.

Citations