OnePlus 8 vs Realme C31 - Detailed Phone Comparison

Detailed Comparison

Specification
OnePlus 8
OnePlus 8
Oneplus
Realme C31
Realme C31
Realme

General

Launch Date April 21, 2020 March 31, 2022
Release Year 2020 2022

Physical

Volume 93.43 cm³ 105.28 cm³
Screen Size to Weight Ratio 3.64 "/g 3.3 "/g
Weight 180 g 197 g
Height 160.2 mm 164.7 mm
Width 72.9 mm 76.1 mm
Thickness 8 mm 8.4 mm
Foldable Design No No
Available Colors
  • Glacial Green
  • Onyx Black
  • Interstellar Glow
  • Polar Silver
  • Light Silver
  • Dark Green

Display

Screen Size 6.55 " 6.5 "
Resolution 1080 x 2400 720 x 1600
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 88.7 % 81.4 %
Pixel Density 402 PPI 270 PPI
Refresh Rate 90 Hz N/A
Typical Brightness N/A 400 nits
HBM Brightness N/A N/A
Peak Brightness N/A N/A

Hardware

Battery Capacity per Screen Area 100.23 mAh/in² 118.34 mAh/in²
Battery Density 46.02 mAh/cm³ 47.49 mAh/cm³
Battery Capacity 4300 mAh 5000 mAh
NFC Support Yes No
Chipset Qualcomm SM8250 Snapdragon 865 5G (7 nm+) Unisoc Tiger T612 (12 nm)
CPU Octa-core (1x2.84 GHz Cortex-A77 & 3x2.42 GHz Cortex-A77 & 4x1.80 GHz Cortex-A55) Octa-core (2x1.8 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
GPU Adreno 650 Mali-G57

Connectivity

USB Version 3.1 2.0
OTG Support 1
DisplayPort
DisplayPort Version N/A N/A
USB Features USB Type-C 3.1, OTG microUSB 2.0

Software

Operating System Android Android
Initial OS Version 10 11
Maximum OS Version 13

Comparison Summary

1. Specifications Comparison

FeatureOnePlus 8Realme C31Practical Impact
Design
Dimensions160.2 x 72.9 x 8 mm, 180g164.7 x 76.1 x 8.4 mm, 197gThe OnePlus 8 is noticeably smaller and lighter, making it more comfortable for one-handed use and extended periods.
BuildCorning Gorilla Glass 5Unknown Screen ProtectionThe OnePlus 8 offers superior screen protection against scratches and drops. The lack of information on the Realme C31's screen protection is concerning.
Display
Size6.55"6.5"Negligible size difference in real-world usage.
Resolution1080x2400 (402 PPI)720x1600 (270 PPI)The OnePlus 8's significantly higher resolution and PPI result in much sharper text, images, and videos.
TechnologyAMOLED, 90HzIPS LCD, 60HzThe OnePlus 8's AMOLED display delivers vibrant colors, deeper blacks, and better power efficiency. The 90Hz refresh rate provides a smoother user experience compared to the Realme C31's 60Hz.
Brightness1100 nitsUnknownThe OnePlus 8 offers excellent outdoor visibility, even in direct sunlight. The lack of brightness information for the Realme C31 makes outdoor usability comparisons difficult.
Performance
ChipsetSnapdragon 865 5GUnisoc Tiger T612The OnePlus 8's flagship Snapdragon 865 vastly outperforms the Realme C31's budget Unisoc processor. Expect significantly faster performance, smoother multitasking, and better gaming on the OnePlus 8.
RAM8GB/12GB3GB/4GBThe OnePlus 8 offers considerably more RAM, enabling seamless multitasking and handling demanding applications without slowdowns.
Storage128GB/256GB32GB/64GBThe OnePlus 8 provides significantly more internal storage for apps, photos, and videos.
Camera
Main Camera48MP, f/1.7513MP, f/2.2The OnePlus 8's higher resolution and wider aperture main camera should capture significantly better detail and low-light performance.
Selfie Camera16MP, f/2.455MP, f/2.2The OnePlus 8 boasts a much higher resolution selfie camera for sharper self-portraits.
Video4K@60fps1080p@30fpsThe OnePlus 8 supports much higher resolution video recording.
Battery
Capacity4300mAh5000mAhWhile the Realme C31 has a larger battery capacity, the more power-efficient display and processor of the OnePlus 8 could result in comparable battery life. Real-world testing would be needed to confirm.
Charging30W10WThe OnePlus 8 charges significantly faster.

2. Key Differences Analysis

OnePlus 8 Advantages:

  • Significantly better performance: The Snapdragon 865 and ample RAM provide a vastly superior user experience for demanding tasks and gaming.
  • Superior display: The AMOLED screen with 90Hz refresh rate offers richer colors, deeper blacks, and smoother visuals.
  • Faster charging: 30W fast charging significantly reduces downtime.
  • Higher quality cameras: The OnePlus 8's camera system offers higher resolution, better low-light performance, and 4K video recording.
  • Premium build and design: Smaller, lighter, and with Gorilla Glass 5 protection.

Realme C31 Advantages:

  • Larger battery capacity: Potentially longer battery life, though real-world usage would depend on various factors.
  • Potentially lower price: (Price not provided, but based on specs, likely more affordable).

3. User Profiles & Recommendations

OnePlus 8: Users who prioritize performance, a high-quality display, fast charging, and a premium experience. Ideal for:

  • Power users: Running demanding apps, multitasking heavily.
  • Mobile gamers: Playing graphically intensive games.
  • Photography enthusiasts: Capturing high-quality photos and videos.

Realme C31: Users on a tight budget who prioritize basic functionality and long battery life. Ideal for:

  • Casual users: Primarily using social media, browsing, and making calls.
  • Users seeking long battery life: Less demanding usage patterns where battery life is paramount.

4. Decision Framework

Key Questions:

  1. What is your budget? The OnePlus 8 is likely significantly more expensive.
  2. What are your primary smartphone uses? Demanding tasks and gaming benefit greatly from the OnePlus 8's performance.
  3. How important is display quality and camera performance? The OnePlus 8 excels in these areas.

My Choice: OnePlus 8

While the Realme C31 might offer longer battery life and a lower price, the OnePlus 8's superior performance, display, camera system, and overall user experience make it the clear winner for me. The difference in chipset and RAM alone would significantly impact daily usage, offering a smoother and more responsive experience. I prioritize performance and a premium feel, making the OnePlus 8 the better choice despite the smaller battery capacity. The lack of specific details about the Realme C31's display brightness and build materials also contributes to this decision. A brighter, more vibrant display and durable construction are essential for a satisfying long-term smartphone experience.

Emily Harper
Emily Harper

Technology Insights Specialist

Dedicated technology writer specializing in mobile device analysis and technology communication. Expert at translating complex smartphone features into clear, actionable insights for diverse audiences.

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Bridging technical complexity with engaging, accessible narratives.