OnePlus 9 vs Sony Xperia 5 III - Detailed Phone Comparison

Detailed Comparison

Specification
OnePlus 9
OnePlus 9
Oneplus

General

Launch Date March 26, 2021 October 8, 2021
Release Year 2021 2021

Physical

Volume 103.29 cm³ 87.54 cm³
Screen Size to Weight Ratio 3.41 "/g 3.63 "/g
Weight 192 g 168 g
Height 160 mm 157 mm
Width 74.2 mm 68 mm
Thickness 8.7 mm 8.2 mm
Foldable Design No No
Available Colors
  • Winter Mist
  • Arctic Sky
  • Astral Black
  • Black
  • Green
  • Pink

Display

Screen Size 6.55 " 6.1 "
Resolution 1080 x 2400 1080 x 2520
Aspect Ratio 20:9 21:9
Screen-to-Body Ratio 87.2 % 81.4 %
Pixel Density 402 PPI 449 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness N/A N/A
HBM Brightness N/A N/A
Peak Brightness 1100 nits N/A

Hardware

Battery Capacity per Screen Area 104.89 mAh/in² 120.94 mAh/in²
Battery Density 43.57 mAh/cm³ 51.4 mAh/cm³
Battery Capacity 4500 mAh 4500 mAh
NFC Support Yes Yes
Chipset Qualcomm SM8350 Snapdragon 888 5G (5 nm) Qualcomm SM8350 Snapdragon 888 5G (5 nm)
CPU Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55)
GPU Adreno 660 Adreno 660

Connectivity

USB Version 3.1 3.1
OTG Support 1 1
DisplayPort
DisplayPort Version N/A N/A
USB Features USB Type-C 3.1, OTG USB Type-C 3.1, OTG, Video Output

Software

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

Comparison Summary

1. Specifications Comparison

Design

FeatureOnePlus 9Sony Xperia 5 IIIPractical Impact
Physical Size160 × 74.2 × 8.7 mm157 × 68 × 8.2 mmThe OnePlus 9 is larger, making it potentially less comfortable for single-handed use. The Sony Xperia 5 III is more compact and pocketable.
Weight192g168gThe Sony Xperia 5 III is significantly lighter, making it more comfortable for extended use.

Display

FeatureOnePlus 9Sony Xperia 5 IIIPractical Impact
Size6.55"6.1"The OnePlus 9 offers a larger viewing area, better for media consumption and multitasking. The Sony Xperia 5 III is more compact and easier to handle with one hand.
Resolution1080x24001080x2520The Sony Xperia 5 III has a slightly sharper display, but the difference is minimal in daily use.
PPI402449The Sony Xperia 5 III has a slightly sharper display, but the difference is minimal in daily use.
TechnologyAMOLEDOLEDBoth use high-quality display technology with excellent color reproduction and deep blacks, minimal difference.
Refresh Rate120Hz120HzBoth provide smooth scrolling and animations, enhancing the overall user experience.
Brightness1100 nits0 nitsThe OnePlus 9 has superior outdoor visibility making it significantly better for use in bright sunlight. The Sony Xperia 5 III brightness specification is missing.

Performance

FeatureOnePlus 9Sony Xperia 5 IIIPractical Impact
ChipsetQualcomm SM8350 Snapdragon 888 5G (5 nm)Qualcomm SM8350 Snapdragon 888 5G (5 nm)Both phones offer the same high-end performance, capable of handling demanding tasks and games smoothly.
AnTuTu Score880,900880,000Both offer nearly identical performance levels, indistinguishable in real-world use.
GPUAdreno 660Adreno 660Both have identical graphical performance, ensuring smooth gaming.

Camera

FeatureOnePlus 9Sony Xperia 5 IIIPractical Impact
Standard Camera Resolution48MP12MPOnePlus 9 captures more detailed photos, especially when cropping.
Standard Camera Aperturef/1.79f/1.7Sony Xperia 5 III has a slightly wider aperture allowing for marginally better low-light performance.
Standard Camera Pixel Size1.12 µm1.80 µmSony Xperia 5 III captures more light per pixel, enhancing low-light performance.
Selfie Camera Resolution16MP8MPOnePlus 9 captures more detailed selfie images.
Selfie Camera Aperturef/2.4f/2.0The Sony Xperia 5 III has a wider aperture, potentially capturing brighter selfies.
Selfie Camera Sensor Size1/3.13"1/4"The OnePlus 9 has a larger sensor, which can contribute to better low-light performance.
Telephoto LensN/A12MPThe Sony Xperia 5 III offers optical zoom capabilities, crucial for telephoto shots. The OnePlus 9 lacks a dedicated telephoto lens.
Wide Angle Lens Resolution50MP12MPOnePlus 9 captures higher-resolution wide-angle photos.
Wide Angle Lens Aperturef/2.2f/2.3OnePlus 9 has a slightly wider aperture allowing for better low-light performance.
Black & White Camera2MPN/AOnePlus 9 offers a dedicated monochrome sensor for stylized black and white shots.
Video RecordingUp to 8K@30fpsUp to 4K@120fpsOnePlus 9 provides higher resolution video, suitable for professional content creation, but lacks OIS. Sony Xperia 5 III supports 4K@120fps with OIS, making it great for high quality and smooth video recording.
Video StabilizationEISOIS, EISSony Xperia 5 III offers optical image stabilization, providing smoother and more stable videos.

Battery

FeatureOnePlus 9Sony Xperia 5 IIIPractical Impact
Capacity4500mAh4500mAhBoth have similar battery capacities, suggesting comparable battery life.
Charging65W Fast Charging, 15W Wireless Charging30W Fast Charging, Bypass ChargingOnePlus 9 charges much faster and offers wireless charging. The Sony Xperia 5 III offers bypass charging which can reduce battery wear during extended gaming sessions.

Other

FeatureOnePlus 9Sony Xperia 5 IIIPractical Impact
RAM8GB/12GB8GBOnePlus 9 offers an option for more RAM, ideal for heavy multitasking and gaming.
Expandable StorageNoNoNeither phone allows for expandable storage, limiting future capacity upgrades.
Operating SystemAndroid 11 (upgradable to 13)Android 11 (upgradable to 13)Both are upgradable to Android 13, ensuring long-term software updates.
AudioDolby Atmos, Stereo Speakers, 3 Microphones, Noise cancellation microphoneDolby Atmos, Hi-Res Audio, Stereo SpeakersOnePlus 9 offers better audio for calls, while the Sony Xperia 5 III is geared for high-quality music playback with Hi-Res audio.
Fingerprint SensorBasic sensorSide-mounted sensorSony Xperia 5 III offers a convenient and faster side-mounted fingerprint sensor.
Screen ProtectionCorning Gorilla Glass 5Corning Gorilla Glass 6Sony Xperia 5 III offers superior screen protection.
SensorsFingerprint, Proximity, Accelerometer, Compass, GyroscopeFingerprint, Proximity, Accelerometer, Compass, Gyroscope, BarometerSony Xperia 5 III includes additional environmental sensors like a barometer.

2. Key Differences Analysis

OnePlus 9 Advantages:

  • Larger Display: Provides a more immersive experience for media consumption and multitasking.
  • Higher Display Brightness: Offers better visibility under bright sunlight.
  • Faster Charging: 65W charging refills the battery much quicker.
  • Wireless Charging: 15W wireless charging provides added convenience.
  • Higher Resolution Cameras: Offers more detailed photos.
  • 8K Video Recording: Allows for high-resolution professional video capture, although it lacks OIS.
  • Dedicated Black and White Camera: Enables artistic monochromatic photos.
  • More RAM Option: Offers a 12 GB RAM version for heavy users.
  • More Microphones: 3 microphones for enhanced spatial audio, clearer calls, better audio separation and immersion and voice capture.
  • Noise Cancellation Microphone: Offers improved voice clarity during calls.

Sony Xperia 5 III Advantages:

  • More Compact and Lighter: More comfortable for single-handed use and carrying around.
  • Optical Zoom: Dedicated telephoto lens provides better zoom capabilities, preserving image quality.
  • Optical Image Stabilization (OIS): Provides smoother, more stable videos, particularly in low-light.
  • Bypass Charging: Reduces battery wear during prolonged gaming sessions while plugged in.
  • Hi-Res Audio: Enhanced audio quality for audiophiles.
  • More Advanced Fingerprint Sensor: Side-mounted for more convenience and speed.
  • Better Screen Protection: Corning Gorilla Glass 6 for improved scratch resistance.
  • Environmental Sensors: Includes a barometer for more comprehensive environmental data collection.
  • Advanced Bluetooth Profiles: Broader Bluetooth support

Trade-offs:

  • OnePlus 9: Sacrifices some camera versatility (no optical zoom) and compact size for a larger screen, faster charging and higher resolution cameras.
  • Sony Xperia 5 III: Sacrifices faster charging and a higher resolution for enhanced camera capabilities (optical zoom, OIS) and a more compact design. The screen's brightness is also unknown.

3. User Profiles & Recommendations

Ideal Users for OnePlus 9:

  • Multimedia Consumers: Users who watch videos and play games regularly will appreciate the larger display and brighter screen.
  • Power Users: Those who multitask heavily or require fast charging capabilities.
  • Social Media Enthusiasts: Users who prioritize high-resolution images and video, especially on the front camera and wide angle.
  • Content Creators: Those who may need high resolution video recording.
  • Audio focused users: Enhanced spatial audio, clearer calls, better audio separation and immersion and voice capture

Ideal Users for Sony Xperia 5 III:

  • Photography Enthusiasts: Users who value versatile camera systems with optical zoom and OIS.
  • Compact Phone Lovers: Those who prefer a smaller, more comfortable phone for single-handed use.
  • Gamers: Bypass charging helps maintain long gaming sessions without battery wear and the enhanced screen protection is a plus.
  • Audiophiles: Users who prioritize high-quality audio playback with Hi-Res audio support.
  • Users Seeking Advanced Sensors: Those who require barometer and other environmental sensors for specific applications.
  • Advanced Bluetooth Users: Those needing a wide range of Bluetooth profiles for varied functionalities.

Specific Use Cases:

  • OnePlus 9:
    • Watching movies or TV shows on the go.
    • Playing graphically intensive games for extended periods.
    • Quickly charging the phone before leaving the house.
    • Taking detailed pictures for social media sharing.
    • Recording professional grade videos.
  • Sony Xperia 5 III:
    • Capturing detailed zoomed-in photos of subjects in distance.
    • Recording smoother videos while on the move.
    • Listening to high-fidelity music on the go.
    • Comfortable, single-handed use for reading or web browsing.
    • Long gaming sessions while plugged in.
    • Those needing environmental data

4. Decision Framework

Key Questions for Buyers:

  1. Do I prioritize a larger display and faster charging, or a more compact design with better camera versatility? This question is central to deciding between the two phones.
  2. How important is video quality and stabilization to my mobile photography experience? This is crucial for choosing between the OnePlus 9's high-resolution video and the Sony Xperia 5 III's OIS.
  3. How important are specialized audio functions? The OnePlus 9 offers features optimized for calls and spatial audio while the Sony Xperia 5 III features Hi-Res audio for music enthusiasts.

Scenario-Based Recommendations:

  • Scenario 1: Frequent Traveler: If you prioritize a large screen for entertainment, fast charging for short layovers, and the ability to take quick photos, choose the OnePlus 9.

  • Scenario 2: Mobile Photographer: If you prioritize a versatile camera with optical zoom, high quality videos and OIS choose the Sony Xperia 5 III.

  • Scenario 3: Daily Commuter: If you prefer a compact phone for one-handed use with a great audio output for music on the commute, choose the Sony Xperia 5 III.

  • Scenario 4: Mobile Gamer: If you need better screen protection, battery bypass charging, and a smooth experience with advanced sensors then choose the Sony Xperia 5 III.

Final Recommendation

If I were to choose, I would pick the Sony Xperia 5 III. While the OnePlus 9 boasts a larger, brighter screen, its benefits don't outweigh the Sony's strengths in my preferred use cases. As someone who values camera quality and compact design, the Xperia 5 III's optical zoom, OIS, and pocketability are more compelling to me. Additionally, I prefer a side-mounted fingerprint sensor for convenience and prioritize great sound for music listening. While the lack of the OnePlus 9's 8K video recording and faster charging is a downside, the overall package of the Sony Xperia 5 III better aligns with my specific needs. The inclusion of the barometer is a bonus.

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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  • Mobile technology analysis
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Bridging technical complexity with engaging, accessible narratives.