OnePlus 9R vs Realme C31 - Detailed Phone Comparison

Detailed Comparison

Specification
OnePlus 9R
OnePlus 9R
Oneplus
Realme C31
Realme C31
Realme

General

Launch Date April 14, 2021 March 31, 2022
Release Year 2021 2022

Physical

Volume 100.21 cm³ 105.28 cm³
Screen Size to Weight Ratio 3.47 "/g 3.3 "/g
Weight 189 g 197 g
Height 161 mm 164.7 mm
Width 74.1 mm 76.1 mm
Thickness 8.4 mm 8.4 mm
Foldable Design No No
Available Colors
  • Carbon Black
  • Lake Blue
  • 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 86.8 % 81.4 %
Pixel Density 402 PPI 270 PPI
Refresh Rate 120 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 104.89 mAh/in² 118.34 mAh/in²
Battery Density 44.9 mAh/cm³ 47.49 mAh/cm³
Battery Capacity 4500 mAh 5000 mAh
NFC Support Yes No
Chipset Qualcomm SM8250-AC Snapdragon 870 5G (7 nm) Unisoc Tiger T612 (12 nm)
CPU Octa-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585) 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 9RRealme C31Practical Impact
Design
Dimensions161 × 74.1 × 8.4 mm164.7 × 76.1 × 8.4 mmRealme C31 is slightly taller and wider, may feel slightly bulkier in hand. Both have same thickness.
Weight189g197gOnePlus 9R is slightly lighter, may be more comfortable for extended use.
Display
Size6.55"6.5"Negligible size difference; both offer a similar screen size experience.
Resolution1080x2400720x1600OnePlus 9R has a much sharper display with more detail, better for reading text and viewing high-res media.
Pixel Density (PPI)402270OnePlus 9R's higher pixel density results in clearer text, sharper images and less pixelation.
TechnologyAMOLEDIPS LCDOnePlus 9R has superior contrast, deeper blacks, more vibrant colours, better visibility in sunlight and better power efficiency for dark UI modes.
Refresh Rate120Hz60HzOnePlus 9R offers much smoother scrolling, animations, and gaming experience.
Brightness0 nits0 nitsBoth have the same unspecified brightness; a missing spec makes a true comparison impossible.
Performance
ChipsetQualcomm Snapdragon 870 5G (7 nm)Unisoc Tiger T612 (12 nm)OnePlus 9R has a significantly more powerful processor, leading to faster app loading, smoother multitasking, better gaming performance.
AnTuTu Score821,600224,223OnePlus 9R offers much better overall performance, capable of handling demanding apps and games.
GPUAdreno 650Mali-G57OnePlus 9R has a better GPU, offering superior graphics rendering for gaming and graphics-intensive tasks.
Camera
Main Camera48MP, f/1.713MP, f/2.2OnePlus 9R's main camera is likely to capture more detailed photos and perform better in low light due to higher resolution and wider aperture.
Front Camera16MP, f/2.45MP, f/2.2OnePlus 9R will likely capture more detailed selfies.
Wide Angle Lens16MP, f/2.2NoneOnePlus 9R can capture wider scenes and landscapes. Realme C31 does not have this capability.
Depth Lens2MP, f/2.4NoneOnePlus 9R captures depth information for portrait mode. Realme C31 lacks this feature.
Macro Lens5MP, f/2.42MP, f/2.4OnePlus 9R will likely capture higher quality macro shots.
Black & White LensNone2MP, f/2.8Realme C31 has a dedicated B&W sensor for artistic photos. OnePlus 9R lacks this feature.
Video RecordingUp to 4K@60fps with HDR, EIS1080p@30fpsOnePlus 9R offers much better video quality, includes HDR, EIS, and slow-motion features.
Camera Features4K Video, OIS, PDAF, RAWPDAF, CDAFOnePlus 9R offers more advanced features such as 4K Video, Optical image stabilization (OIS), Manual Focus and RAW capture for pro users.
Battery
Capacity4500mAh5000mAhRealme C31 has a slightly larger battery, likely offering better battery life under similar usage conditions.
Charging65W Fast Charging10W Fast ChargingOnePlus 9R will charge much faster, reducing downtime.
Software & Connectivity
OSAndroid 10, upgradable to 13Android 11Realme C31 has a slightly newer base version of Android but is not guaranteed further upgrades.
WiFiWiFi 6 (802.11ax)802.11nOnePlus 9R supports newer standards, offering faster and more reliable Wi-Fi.
Bluetooth5.1 with aptX, LDAC, AAC5.0 with EDROnePlus 9R has a newer Bluetooth version and supports high quality audio codecs, providing better audio quality with compatible devices.
GPSGPS (L1+L5), BeiDou (B1), Galileo (E1+E5a)GPS, A-GPS, GLONASS, Beidou, GalileoOnePlus 9R has more precise and reliable GPS for navigation.
Storage & Audio
Internal Storage128GB/256GB32GB/64GBOnePlus 9R provides much more storage space for apps, photos and videos.
RAM8GB/12GB3GB/4GBOnePlus 9R has much more RAM, enabling better multitasking and handling of demanding apps.
Expandable StorageNoNoNeither phone offers expandable storage.
AudioDolby Atmos, Stereo SpeakersBasic AudioOnePlus 9R offers much better audio experience with Dolby Atmos, stereo sound and a noise cancellation mic.
Security
Fingerprint SensorBasicSide-mountedRealme C31 has a side mounted fingerprint sensor, which can be more convenient for some users.
Sensors
SensorsAccelerometer, Compass, Gyroscope, FingerprintAccelerometer, Compass, GyroscopeOnePlus 9R has an additional biometric (fingerprint) sensor.

2. Key Differences Analysis

OnePlus 9R Advantages:

  • Superior Performance: The Snapdragon 870 chipset offers significantly better processing power, making it ideal for demanding tasks, multitasking, and gaming.
  • High-Quality Display: The AMOLED panel with 120Hz refresh rate offers vibrant colors, deep blacks, smooth animations, and high clarity.
  • Advanced Camera System: Features a higher resolution main sensor, a dedicated wide-angle lens, and supports 4K video recording with OIS.
  • Fast Charging: 65W fast charging allows for significantly faster charging times, reducing downtime.
  • Better Audio Experience: Dolby Atmos and Stereo Speakers enhance media consumption.
  • More RAM and Storage Options: Comes with much more RAM and storage, ensuring smoother multitasking and more space for apps and media.
  • Advanced Connectivity: Supports newer Wi-Fi and Bluetooth versions, and more precise GPS.

Realme C31 Advantages:

  • Larger Battery: The 5000 mAh battery may offer slightly longer battery life.
  • Dedicated Black and White Lens: For users who like artistic photography.
  • Newer base Android version: Realme C31 has a slightly newer version of Android out of the box.
  • Side-Mounted Fingerprint Sensor: Can be more ergonomic for some users.
  • Lower Price: The Realme C31 is likely to be much more affordable.

Significant Trade-offs:

  • OnePlus 9R: Sacrifices some battery capacity for a slimmer profile, although faster charging helps mitigate this. Lacks expandable storage.
  • Realme C31: Has a significantly inferior display, weaker performance, and a basic camera system. Slow charging is a significant drawback.

3. User Profiles & Recommendations

OnePlus 9R:

  • Ideal User: Power users, gamers, multimedia enthusiasts, or anyone seeking a high-performance, smooth, and feature-rich smartphone.
  • Use Cases:
    • High-end gaming and intensive apps
    • Enjoying high-resolution video content
    • Photography enthusiasts that needs high-quality photos.
    • Multitasking and productivity on-the-go
    • Users who prioritize fast charging and seamless performance

Realme C31:

  • Ideal User: Budget-conscious users, or those seeking a basic smartphone for everyday tasks and don't require intensive usage.
  • Use Cases:
    • Basic everyday phone functions (calls, texts, social media)
    • Light browsing and media consumption.
    • Users who prioritize long battery life.
    • Those who want basic photography and video capabilities on a budget.

Price-to-Value Ratio:

  • OnePlus 9R: Offers a high price-to-performance ratio, suitable for users seeking a flagship experience.
  • Realme C31: Provides a good price-to-value ratio, especially for users with basic needs and limited budget.

4. Decision Framework

Key Questions for Buyers:

  1. What is your primary use case for the phone? (Gaming, photography, basic tasks, etc.)
  2. What is your budget? (Are you willing to pay a premium for better performance?)
  3. What do you value most in a smartphone? (Performance, camera, battery, display, etc.)

Scenario-Based Recommendations:

  • Scenario 1: High Performance and Gaming: If you need a phone for demanding games, multitasking, and power-intensive apps, the OnePlus 9R is the clear choice.
  • Scenario 2: Budget-Conscious Basic User: If you need a basic phone for calls, messaging, and light browsing, the Realme C31 is more suitable.
  • Scenario 3: Photography Enthusiast: The OnePlus 9R is the better choice, offering a more versatile camera system with better image quality and 4K video capabilities.
  • Scenario 4: Extended Battery Life: Although not a huge difference, the Realme C31 has a slightly larger battery, which is better for users who need the most battery possible.

My Choice

If I were choosing, I would pick the OnePlus 9R. My preference leans towards a phone that can deliver a smooth, responsive experience with high-quality visuals and capable photography. The superior performance of the Snapdragon 870, the 120Hz AMOLED display, and the more advanced camera system of the OnePlus 9R outweigh the slightly larger battery of the Realme C31 for me. Additionally, the fast charging capability of the OnePlus 9R mitigates concerns about a smaller battery capacity. While the Realme C31 would serve a more basic user well, the overall experience offered by the OnePlus 9R aligns more with my needs. The higher price is justified by the significantly enhanced user experience, especially for someone who plays games, watches videos, and uses their phone for tasks beyond the basics.

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.

Key Strengths:

  • Mobile technology analysis
  • Digital media communication
  • Technical storytelling
  • User-centric technology insights

Bridging technical complexity with engaging, accessible narratives.