OnePlus 9 Pro vs Realme C31 - Detailed Phone Comparison

Detailed Comparison

Specification
OnePlus 9 Pro
OnePlus 9 Pro
Oneplus
Realme C31
Realme C31
Realme

General

Launch Date March 30, 2021 March 31, 2022
Release Year 2021 2022

Physical

Volume 104.5 cm³ 105.28 cm³
Screen Size to Weight Ratio 3.4 "/g 3.3 "/g
Weight 197 g 197 g
Height 163.2 mm 164.7 mm
Width 73.6 mm 76.1 mm
Thickness 8.7 mm 8.4 mm
Foldable Design No No
Available Colors
  • Forest Green
  • Morning Mist
  • Stellar Black
  • Light Silver
  • Dark Green

Display

Screen Size 6.7 " 6.5 "
Resolution 1440 x 3216 720 x 1600
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 89.9 % 81.4 %
Pixel Density 525 PPI 270 PPI
Refresh Rate 120 Hz N/A
Typical Brightness N/A 400 nits
HBM Brightness N/A N/A
Peak Brightness 1300 nits N/A

Hardware

Battery Capacity per Screen Area 100.25 mAh/in² 118.34 mAh/in²
Battery Density 43.06 mAh/cm³ 47.49 mAh/cm³
Battery Capacity 4500 mAh 5000 mAh
NFC Support Yes No
Chipset Qualcomm SM8350 Snapdragon 888 5G (5 nm) Unisoc Tiger T612 (12 nm)
CPU Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55 Octa-core (2x1.8 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
GPU Adreno 660 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 11 11
Maximum OS Version 14

Comparison Summary

Smartphone Comparison: OnePlus 9 Pro vs. Realme C31

1. Specifications Comparison

FeatureOnePlus 9 ProRealme C31Practical Impact
Design
Dimensions163.2 x 73.6 x 8.7 mm164.7 x 76.1 x 8.4 mmRealme C31 is slightly taller and wider, OnePlus 9 Pro is slightly thicker. Minimal real-world difference in hand.
Weight197g197gBoth feel similar in weight, making no practical difference in terms of hand feel or portability.
Display
Size6.7"6.5"OnePlus 9 Pro has a slightly larger screen, better for media consumption and multitasking.
Resolution1440x3216720x1600OnePlus 9 Pro offers much sharper images and text, crucial for reading and detailed content.
PPI525270OnePlus 9 Pro displays crisper text and images, reducing pixelation and eye strain.
TechnologyUnknownIPS LCDRealme C31 display technology offers better viewing angles and color reproduction compared to the unknown display technology of OnePlus 9 Pro.
Refresh Rate120Hz60HzOnePlus 9 Pro has significantly smoother scrolling and animations, better for gaming and fast-paced content.
Brightness1300 nits0 nitsOnePlus 9 Pro is much brighter, highly visible in direct sunlight. Realme C31 screen will be difficult to see in bright light.
Performance
ChipsetSnapdragon 888 (5 nm)Unisoc Tiger T612 (12 nm)OnePlus 9 Pro offers significantly faster performance, better for gaming, demanding apps, and multitasking.
AnTuTu Score877,600224,223OnePlus 9 Pro is much faster for all tasks, including games, app loading, and general usage.
GPUAdreno 660Mali-G57OnePlus 9 Pro has superior graphics processing, better for gaming and graphically demanding apps.
Battery
Capacity4500mAh5000mAhRealme C31 might offer slightly better battery life, especially with its lower-powered chipset and screen.
Charging65W Fast Charging10W Fast ChargingOnePlus 9 Pro charges much faster, reducing downtime and improving convenience.
Battery FeaturesWireless Charging, Reverse ChargingNon-removableOnePlus 9 Pro offers wireless charging and reverse charging capabilities for more convenience.
Camera
Main Camera Res48MP13MPOnePlus 9 Pro captures more detailed photos, better for larger prints and cropping.
Main Camera Aperturef/1.8f/2.2OnePlus 9 Pro performs better in low light due to wider aperture and larger sensor size
Selfie Camera Res16MP5MPOnePlus 9 Pro takes higher resolution selfies, better for sharing and cropping.
Selfie Camera Aperturef/2.4f/2.2Realme C31 takes brighter selfies in low light due to wider aperture
Telephoto LensYesNoOnePlus 9 Pro has a dedicated telephoto lens for better zoomed photos.
Wide Angle LensYesNoOnePlus 9 Pro offers a wide angle lens for more expansive landscape or group photos.
Macro LensNoYesRealme C31 has a dedicated macro lens for capturing very close-up photos.
Black & White LensYesYesOnePlus 9 Pro has a slightly wider aperture for better low light monochrome shots.
Video Recording8K@30fps, 4K@120fps1080p@30fpsOnePlus 9 Pro can record much higher quality videos, ideal for professional video work.
DXOMark Mobile Score122Not TestedOnePlus 9 Pro provides high quality photos and videos.
Software
OSAndroid 11, Upgradable to 14Android 11, Unknown UpgradeOnePlus 9 Pro is confirmed to receive more software updates.
Connectivity
WiFiWiFi 6, Dual-Band802.11nOnePlus 9 Pro has faster, more reliable WiFi.
BluetoothBluetooth 5.2Bluetooth 5.0OnePlus 9 Pro has a more modern Bluetooth for enhanced connectivity and features.
GPSDual-Band GPSStandard GPSOnePlus 9 Pro is more accurate in location tracking.
Storage
Internal128/256 GB32/64 GBOnePlus 9 Pro offers significantly more storage for apps, photos, and videos.
RAM8/12 GB3/4 GBOnePlus 9 Pro handles multitasking more efficiently, smoother performance for more apps running at the same time.
Expandable StorageNoNoNeither phone allows for expandable storage.
Audio
Audio QualityDolby Atmos, Stereo SpeakersBasic audio featuresOnePlus 9 Pro has a noticeably better audio experience through its richer sound and immersive experience.
Security
Featuresbasic fingerprint sensorside-mounted fingerprint sensorRealme C31 has a more convenient and faster fingerprint sensor.
Build Quality
Screen ProtectionGorilla Glass 5UnknownOnePlus 9 Pro screen is more resistant to scratches and damage.

2. Key Differences Analysis

OnePlus 9 Pro Advantages:

  • Superior Display: Higher resolution, pixel density, and refresh rate provide a significantly better visual experience. Much brighter screen, suitable for bright outdoor use.
  • Much Faster Performance: The Snapdragon 888 chipset delivers a vastly superior experience in terms of app loading, multitasking, and gaming.
  • Advanced Camera System: Offers a versatile camera setup with multiple lenses, higher resolutions, and 8K video recording, ideal for photography enthusiasts.
  • Faster Charging: 65W fast charging significantly reduces charging times. Also has wireless charging options.
  • Enhanced Connectivity: Features Wi-Fi 6 and Bluetooth 5.2 for faster and more reliable connections.
  • More Storage and RAM: Significantly more internal storage and RAM, providing better experience with heavy apps and media files.
  • Premium Audio: Better audio quality through its enhanced speakers and Dolby Atmos.

Realme C31 Advantages:

  • Larger Battery: The 5000mAh battery might offer slightly better battery life, especially with its more efficient chipset and lower res screen.
  • Macro Lens: Includes a dedicated macro lens for close-up shots.
  • Lower Price Point: Significantly more affordable, making it accessible to budget-conscious consumers.
  • Side-mounted Fingerprint Sensor: More convinient location for finger print scanning.

Trade-offs:

  • OnePlus 9 Pro trades off a bigger battery and a macro camera lens for an overall better display, performance, camera, charging, and audio experience.
  • Realme C31 compromises heavily on display quality, performance, camera capabilities, and charging speed for a lower price and a slightly bigger battery and macro lens.

3. User Profiles & Recommendations

Ideal User for OnePlus 9 Pro:

  • Power Users: Users who demand fast performance for gaming, multitasking, and demanding apps.
  • Photography Enthusiasts: Users who want a versatile and high-quality camera system.
  • Media Consumers: Users who prioritize high-resolution displays for watching videos and browsing content.
  • Professionals: Users who need a reliable, high-performance device for work.
  • Users who prefer a premium experience: Users who want high quality design, performance, screen, and other features.

Use Cases for OnePlus 9 Pro:

  • Gaming with high refresh rate and powerful chipset.
  • Professional photography and videography with advanced camera features.
  • Smooth multitasking and fast app loading.
  • Watching high-resolution movies and videos with vivid colors.
  • Reliable navigation with dual-band GPS.
  • Work related tasks for professionals that require heavy use of apps and performance.

Ideal User for Realme C31:

  • Budget-Conscious Users: Users who prioritize affordability and are willing to make compromises on performance and display quality.
  • Basic Users: Users who primarily use their phone for calls, texts, social media, and light browsing.
  • Users seeking longer battery: Users who prioritize longer battery life and do not mind compromises on other features.
  • Users seeking a macro camera: Users who prefer the use of a macro lens over telephoto and ultra-wide lens.

Use Cases for Realme C31:

  • Basic day-to-day tasks like calls, messaging, and social media.
  • Casual browsing and light media consumption.
  • Users looking for a backup or secondary phone.
  • Users who need a phone with a reliable fingerprint scanner.

4. Decision Framework

Key Questions to Consider:

  1. What is your budget? If budget is the primary concern, the Realme C31 is the more affordable option.
  2. What are your primary use cases? If performance, camera quality, and display are crucial, the OnePlus 9 Pro is preferable. If basic tasks and longer battery life are more important, the Realme C31 might suffice.
  3. How important is the user experience? The OnePlus 9 Pro offers a significantly smoother, faster, and more visually pleasing experience than the Realme C31.

Scenario-Based Recommendations:

  • Scenario 1 (Budget-Conscious Casual User): If you are on a tight budget and primarily use your phone for basic tasks, the Realme C31 is a practical option.
  • Scenario 2 (Performance and Camera Enthusiast): If you value performance, camera quality, and a high-end display, the OnePlus 9 Pro is the clear choice, despite the higher price.
  • Scenario 3 (Balanced User): If you are looking for a balance between features and price, consider other devices in the mid-range category, as neither of these phones is a perfect balance.

My Choice and Why:

I would choose the OnePlus 9 Pro. While the Realme C31 offers a tempting price point and a slightly larger battery, the sheer difference in overall user experience makes the OnePlus 9 Pro a much better pick for me.

As someone who values a smooth and fast experience when switching between apps, having a stunning display for content consumption, and having a versatile high-quality camera on hand, the OnePlus 9 Pro completely surpasses the Realme C31 in all aspects. The better display, significantly faster performance, advanced camera system, faster charging, and enhanced connectivity features would justify the higher price for me. For me, the slight benefit in battery life of the Realme C31 does not out weight the advantages of the OnePlus 9 Pro.

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.