OnePlus 9 vs Realme C65 - Detailed Phone Comparison

Detailed Comparison

Specification
OnePlus 9
OnePlus 9
Oneplus
Realme C65
Realme C65
Realme

General

Launch Date March 26, 2021 April 1, 2024
Release Year 2021 2024

Physical

Volume 103.29 cm³ 95.2 cm³
Screen Size to Weight Ratio 3.41 "/g 3.61 "/g
Weight 192 g 185 g
Height 160 mm 164.6 mm
Width 74.2 mm 76.1 mm
Thickness 8.7 mm 7.6 mm
Foldable Design No No
Available Colors
  • Winter Mist
  • Arctic Sky
  • Astral Black
  • Purple Nebula
  • Black Milky Way

Display

Screen Size 6.55 " 6.67 "
Resolution 1080 x 2400 720 x 1604
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 87.2 % 85.6 %
Pixel Density 402 PPI 264 PPI
Refresh Rate 120 Hz 90 Hz
Typical Brightness N/A 500 nits
HBM Brightness N/A 625 nits
Peak Brightness 1100 nits N/A

Hardware

Battery Capacity per Screen Area 104.89 mAh/in² 112.39 mAh/in²
Battery Density 43.57 mAh/cm³ 52.52 mAh/cm³
Battery Capacity 4500 mAh 5000 mAh
NFC Support Yes Yes
Chipset Qualcomm SM8350 Snapdragon 888 5G (5 nm) Mediatek Helio G85 (12 nm)
CPU Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
GPU Adreno 660 Mali-G52 MC2

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 USB Type-C 2.0

Software

Operating System Android Android
Initial OS Version 11 14
Maximum OS Version 13

Comparison Summary

1. Specifications Comparison

Design

FeatureOnePlus 9Realme C65Practical Impact
Dimensions160 × 74.2 × 8.7 mm164.6 × 76.1 × 7.6 mmRealme C65 is taller and wider, but thinner, while OnePlus 9 has larger overall volume. The C65 is likely more pocketable due to its slim profile, the OnePlus 9 may feel more substantial in the hand.
Weight192g185gRealme C65 is slightly lighter which could be more comfortable for extended use.
BuildCorning Gorilla Glass 5UnknownOnePlus 9 offers superior screen protection against scratches and impacts. The Realme C65's screen protection is unknown, posing a potential risk for damage

Display

FeatureOnePlus 9Realme C65Practical Impact
Size6.55"6.67"Realme C65 provides a slightly larger viewing area, beneficial for media consumption and gaming.
Resolution1080x2400720x1604OnePlus 9 has a much sharper display, resulting in crisper text, images, and video.
Pixel Density402 PPI264 PPIThe OnePlus 9's higher PPI offers a visibly clearer and more detailed display.
TechnologyAMOLEDIPS LCDOnePlus 9's AMOLED offers deeper blacks, better contrast, superior power efficiency for dark themes, more vibrant colors.
Refresh Rate120Hz90HzOnePlus 9 provides smoother scrolling and animations, making the user experience more fluid.
Brightness1100 nits0 nitsOnePlus 9 has superior outdoor visibility, making it much easier to view the screen in bright sunlight. The Realme C65 brightness is unknown.

Performance

FeatureOnePlus 9Realme C65Practical Impact
ChipsetQualcomm Snapdragon 888 5G (5 nm)Mediatek Helio G85 (12 nm)OnePlus 9's chipset is significantly more powerful, offering faster app loading, smoother multitasking, and better gaming performance.
AnTuTu Score880,900225,154OnePlus 9 is drastically faster, handling intensive tasks with ease while the C65 is more suitable for basic use.
GPUAdreno 660Mali-G52 MC2OnePlus 9 has a more powerful GPU resulting in superior graphics rendering for games and graphically intensive apps.

Camera

FeatureOnePlus 9Realme C65Practical Impact
Main Camera Resolution48MP50MPRealme C65 has a slightly higher megapixel count, but the OnePlus 9's larger sensor size often results in better image quality.
Main Camera Aperturef/1.79f/1.8OnePlus 9's wider aperture allows more light, improving low-light performance.
Main Camera Sensor Size1/1.4"1/2.76"OnePlus 9's significantly larger sensor captures more light and detail, resulting in better image quality, especially in low light.
Selfie Camera Resolution16MP8MPOnePlus 9 offers higher resolution selfies, capturing more detail.
Selfie Camera Aperturef/2.4f/2.0Realme C65's wider aperture allows more light for brighter selfies, especially in low light.
Wide Angle Lens50MPNoneOnePlus 9 provides a versatile wide-angle option for capturing more in a scene.
Portrait (Depth) CameraNone2MPRealme C65 has a dedicated depth sensor for more accurate portrait mode effects
Black & White Camera2MPNoneOnePlus 9 has a dedicated B&W sensor for artistic B&W photos
Video RecordingUp to 8K@30fps1080p@30fpsOnePlus 9 supports much higher video resolutions, suitable for high-quality video recording

Battery

FeatureOnePlus 9Realme C65Practical Impact
Capacity4500mAh5000mAhRealme C65 likely offers longer battery life due to its larger capacity.
Charging65W Fast Charging45W Fast ChargingOnePlus 9 charges faster, reducing downtime.
Wireless Charging15WNoneOnePlus 9 can be charged wirelessly offering convenience.

2. Key Differences Analysis

OnePlus 9 Advantages:

  • Superior Display: Significantly higher resolution, pixel density, AMOLED technology, and higher refresh rate provide a much better viewing experience.
  • Significantly Higher Performance: The Snapdragon 888 chipset offers vastly superior performance, making it better for gaming, multitasking, and demanding apps.
  • Advanced Camera System: Includes a superior main sensor, a wide-angle lens, and a black & white lens for a more versatile and higher-quality photography experience.
  • Faster Charging & Wireless Charging: 65W fast charging and 15W wireless charging add convenience and reduce downtime.
  • Advanced Connectivity: Supports newer Wi-Fi and Bluetooth standards for faster speeds and better performance.
  • Premium Audio Features: Includes Dolby Atmos, stereo speakers, and noise cancellation.

Realme C65 Advantages:

  • Longer Battery Life: Larger battery capacity provides better endurance.
  • Slimmer Design: Thinner profile might be more pocketable and comfortable to hold.
  • Newer Android OS: Ships with Android 14 out of the box.
  • Portrait (Depth) Camera: Includes dedicated depth sensor for improved bokeh.
  • Potentially Lower Price: The Realme C65 is likely positioned as a more budget-friendly device.
  • Side-mounted fingerprint scanner: potentially faster and more natural to use.

Trade-offs:

  • OnePlus 9: Offers premium features at a potentially higher price. It might have shorter battery life compared to the Realme C65
  • Realme C65: Provides basic smartphone functionalities with longer battery life at the cost of performance, display quality, and a less advanced camera system. The lack of specified screen protection is a concern.

3. User Profiles & Recommendations

OnePlus 9: Ideal User

  • Performance Enthusiasts: Gamers, multitaskers, and users who require smooth performance.
  • Media Consumers: Users who value high-quality displays for watching videos and browsing.
  • Photography Lovers: Those who need versatile camera options and superior image quality.
  • Users who value premium features: Those who need a high refresh rate, wireless charging and a premium audio experience.

Specific Use Cases:

  • High-end mobile gaming.
  • Professional-quality photography and videography.
  • Demanding productivity tasks.
  • Enjoying multimedia content with high fidelity.

Realme C65: Ideal User

  • Budget-Conscious Buyers: Those seeking an affordable phone with essential features.
  • Casual Users: Users who prioritize battery life over performance.
  • Basic Smartphone Needs: Those who need a phone for calls, messaging, and basic browsing.
  • Users who prefer simplicity: Users who do not need advanced features, and simply want a reliable device.

Specific Use Cases:

  • Daily communication and basic browsing.
  • Long-lasting battery life for extended use away from power sources.
  • Everyday social media browsing
  • Basic camera needs.

Price-to-Value Ratio:

  • OnePlus 9: Offers a premium experience with top-tier performance and advanced features, justifying a higher price.
  • Realme C65: Provides a good value for its price point, focusing on essential features and battery life.

4. Decision Framework

Key Questions to Consider:

  1. What is your primary use case? (Gaming, photography, basic usage, battery life)
  2. What is your budget? Are you willing to pay more for premium features and performance?
  3. How important is display quality to you? (Resolution, color accuracy, brightness)

Scenario-Based Recommendations:

  • Scenario 1: High Performance & Multimedia - If you need a device for gaming, high-quality media consumption, and demanding apps, the OnePlus 9 is the clear choice.
  • Scenario 2: Budget & Battery Life - If you prioritize affordability and long battery life, and don't need cutting-edge performance or a top-tier display, the Realme C65 is the better option.
  • Scenario 3: Balanced Usage - If you're looking for a balance between cost, performance and battery, you would likely be better served by choosing a different model altogether. The OnePlus 9 provides a far superior performance and display, and should be chosen if performance is even a small consideration.

My Choice

I would choose the OnePlus 9. Although it's an older model, the superiority in display quality, performance, and camera capabilities is too significant to ignore. As someone who values a smooth user experience, the higher refresh rate, sharper screen, and powerful processor are critical. While the Realme C65 has a longer battery and a newer Android version, the drastic differences in processing speed and overall screen quality mean that in everyday use, the OnePlus 9 will have a far better user experience for me. The better camera and faster charging are also strong advantages that tip the scales in favour of the OnePlus 9.

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
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Bridging technical complexity with engaging, accessible narratives.