OnePlus 9 Pro vs Xiaomi Poco M3 Pro 5G - Detailed Phone Comparison

Detailed Comparison

Specification
OnePlus 9 Pro
OnePlus 9 Pro
Oneplus

General

Launch Date March 30, 2021 May 22, 2021
Release Year 2021 2021

Physical

Volume 104.5 cm³ 108.43 cm³
Screen Size to Weight Ratio 3.4 "/g 3.42 "/g
Weight 197 g 190 g
Height 163.2 mm 161.8 mm
Width 73.6 mm 75.3 mm
Thickness 8.7 mm 8.9 mm
Foldable Design No No
Available Colors
  • Forest Green
  • Morning Mist
  • Stellar Black
  • Cool Blue
  • Poco Yellow
  • Power Black

Display

Screen Size 6.7 " 6.5 "
Resolution 1440 x 3216 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 89.9 % 83.7 %
Pixel Density 525 PPI 405 PPI
Refresh Rate 120 Hz 90 Hz
Typical Brightness N/A 400 nits
HBM Brightness N/A 500 nits
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 46.11 mAh/cm³
Battery Capacity 4500 mAh 5000 mAh
NFC Support Yes Yes
Chipset Qualcomm SM8350 Snapdragon 888 5G (5 nm) Mediatek Dimensity 700 (7 nm)
CPU Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55 Octa-core (2x2.2 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU Adreno 660 Mali-G57 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 11
Maximum OS Version 14

Comparison Summary

Smartphone Comparison: OnePlus 9 Pro vs. Xiaomi Poco M3 Pro 5G

1. Specifications Comparison

FeatureOnePlus 9 ProXiaomi Poco M3 Pro 5GPractical Impact
Design
Dimensions163.2 x 73.6 x 8.7 mm161.8 x 75.3 x 8.9 mmOnePlus 9 Pro is slightly taller and thinner, while the Poco M3 Pro 5G is wider and thicker. The difference in hand feel is subtle but noticeable.
Weight197g190gPoco M3 Pro 5G is 7g lighter, which may be slightly more comfortable for prolonged use.
BuildStandardStandardBoth phones have a standard build, no foldable display.
Display
Size6.7"6.5"OnePlus 9 Pro offers a slightly larger screen, which can be better for media consumption and multitasking.
Resolution1440 x 32161080 x 2400OnePlus 9 Pro offers a much sharper display with significantly higher pixel density, making text and images look clearer.
Pixel Density (PPI)525405The difference in PPI results in a visibly sharper image on the OnePlus 9 Pro, enhancing the viewing experience.
TechnologyIPS LCDPoco M3 Pro 5G uses an IPS LCD; OnePlus 9 Pro’s display technology is unspecified but likely AMOLED, offering vibrant colors and better contrast.
Refresh Rate120Hz90HzOnePlus 9 Pro’s higher refresh rate results in smoother scrolling and animations.
Brightness1300 nits0 nitsOnePlus 9 Pro’s much higher peak brightness significantly improves visibility in direct sunlight. Poco M3 Pro 5G's brightness is not specified, but likely much lower.
Performance
ChipsetQualcomm Snapdragon 888 5G (5 nm)Mediatek Dimensity 700 (7 nm)Snapdragon 888 offers significantly higher processing power, leading to faster app loading, smoother multitasking, and better gaming performance.
AnTuTu Score877,600379,761OnePlus 9 Pro achieves more than double the benchmark score, demonstrating significantly higher performance in demanding tasks.
GPUAdreno 660Mali-G57 MC2Adreno 660 is a higher-performing GPU, resulting in better graphics rendering in games and other applications.
Camera
Main Camera48MP, f/1.8, 1/1.43" sensor48MP, f/1.79, 1/2" sensorOnePlus 9 Pro's larger sensor and slightly narrower aperture should provide superior image quality, especially in low light.
Selfie Camera16MP, f/2.4, 1/3.13" sensor8MP, f/2.0, 1/4" sensorOnePlus 9 Pro's higher resolution and larger sensor size should result in better selfies; while Poco M3 Pro 5G's wider aperture will benefit in lower light.
Telephoto Lens8MP, f/2.4, 1/4.4" sensorNoneOnePlus 9 Pro offers optical zoom capabilities for better close up and distance photography.
Wide Angle Lens50MP, f/2.2, 1/1.56" sensorNoneOnePlus 9 Pro offers ultra wide-angle capabilities, allowing for expansive landscape shots.
Portrait Mode (Depth) LensNone2MP, f/2.4, 1/5" sensorPoco M3 Pro 5G provides additional depth information for bokeh effects on portrait mode photos.
Macro LensNone2MP, f/2.4, 1/5" sensorPoco M3 Pro 5G allows for dedicated macro shots for close-up photography.
Black & White2MP, f/2.4, sensorNoneOnePlus 9 Pro has a dedicated B&W sensor for monochrome photography effects.
Video RecordingUp to 8K@30fpsUp to 1080p@30fpsOnePlus 9 Pro's 8K capabilities offer much higher resolution video recording, and additional features like HDR, OIS, EIS.
DxOMark Score122 (Mobile)NoneOnePlus 9 Pro's camera is independently rated, confirming its superior performance, particularly with photos.
Battery
Capacity4500mAh5000mAhPoco M3 Pro 5G has a larger battery, likely providing longer battery life.
Charging65W Fast Charging, Wireless 50W18W Fast ChargingOnePlus 9 Pro charges significantly faster, reducing downtime.
Battery FeaturesWireless Charging 50W, REverse wireless chargingNoneOnePlus 9 Pro supports convenient wireless charging and reverse wireless charging, which are absent from the Poco M3 Pro 5G.
Software
OSAndroid 11 (upgradable to 14)Android 11 (no stated max version)OnePlus 9 Pro offers longer software support, guaranteeing access to newer Android features.
Connectivity
Wi-FiWi-Fi 6Wi-Fi 5OnePlus 9 Pro supports faster and more efficient Wi-Fi 6.
BluetoothBluetooth 5.2Bluetooth 5.1OnePlus 9 Pro offers improved Bluetooth connectivity with better energy efficiency, more codecs.
GPSGPS (L1+L5), GLONASS (L1), BeiDou (B1), Galileo (E1+E5a)GPS, A-GPS, GLONASS, Beidou, GalileoOnePlus 9 Pro supports more GPS bands for more accurate location services.
Storage
Internal Storage128GB/256GB64GB/128GBOnePlus 9 Pro offers a higher storage variant, providing more space for files, media, and apps.
RAM8GB/12GB4GB/6GBOnePlus 9 Pro offers a higher RAM capacity for better multi-tasking and handling demanding apps.
Expandable StorageNoNoNeither phone supports expandable storage.
Audio
Audio QualityDolby Atmos, Stereo Speakers, 3 microphonesHi-Res AudioOnePlus 9 Pro’s audio features deliver a more immersive and clearer audio experience, while Poco M3 Pro 5G delivers high res audio, but no stereo speakers.
Security
Fingerprint SensorBasic Fingerprint SensorSide-mounted Fingerprint SensorXiaomi Poco M3 Pro 5G provides a more convenient side mounted fingerprint sensor.
Build Quality
Screen ProtectionGorilla Glass 5Gorilla Glass 3OnePlus 9 Pro's screen offers better protection against scratches and drops.

2. Key Differences Analysis

OnePlus 9 Pro Advantages:

  • Superior Performance: The Snapdragon 888 chipset offers significantly higher processing power, making it much faster for all tasks, especially gaming and demanding applications.
  • Significantly Better Display: Higher resolution, pixel density, brightness and higher refresh rate contribute to a much superior viewing experience with vibrant colors, and clarity.
  • Advanced Camera System: Offers a versatile camera setup with a telephoto lens, ultrawide lens, and a B&W sensor for better image quality, flexibility and variety.
  • Faster Charging: 65W fast charging drastically reduces the time needed to recharge the phone.
  • Wireless Charging: Supports convenient wireless charging, as well as reverse wireless charging.
  • Improved Audio: Offers Dolby Atmos, stereo speakers, noise cancellation microphone and 3 microphones for higher audio quality, clearer calls, and immersive audio.
  • Advanced Connectivity: Supports newer Wi-Fi 6 and Bluetooth 5.2 standards for faster and more stable connections.
  • More Software Support: Guaranteed updates up to Android 14, while the Poco has no stated maximum version.
  • Better Build Quality: Gorilla Glass 5 offers superior scratch and drop protection compared to Gorilla Glass 3.

Xiaomi Poco M3 Pro 5G Advantages:

  • Larger Battery: A 5000mAh battery provides longer battery life for users who prioritize endurance.
  • Side-Mounted Fingerprint Sensor: More convenient placement for unlocking the phone.
  • Lower Price: Likely available at a more budget-friendly price point.
  • Dedicated Depth and Macro Cameras: Provides a depth sensor for portraits and dedicated macro lens for close-up shots.

Trade-offs:

  • OnePlus 9 Pro sacrifices some battery life for superior performance, a high-end display, advanced camera system and fast charging.
  • Xiaomi Poco M3 Pro 5G sacrifices performance, display quality, camera versatility and a premium audio experience for longer battery life and a lower price.

3. User Profiles & Recommendations

OnePlus 9 Pro Ideal User:

  • Power Users: Demands the highest performance for gaming, multitasking, and resource-intensive apps.
  • Photography Enthusiasts: Values versatile camera system with optical zoom, wide-angle lens and high-quality images.
  • Media Consumers: Prioritizes a high-resolution, vibrant display for watching videos and browsing content.
  • Users Seeking Premium Features: Want fast charging, wireless charging, a high refresh rate display and a great audio experience.

Use Cases for OnePlus 9 Pro:

  • Professional photography and videography.
  • Mobile gaming with high graphic settings.
  • Seamless multitasking between multiple resource-heavy applications.
  • Enjoying high-resolution movies and streaming content.

Xiaomi Poco M3 Pro 5G Ideal User:

  • Budget-Conscious Buyers: Prioritizes affordability without needing the absolute best performance or display.
  • Users Prioritizing Battery Life: Needs a phone that can last throughout a long day on a single charge.
  • Casual Users: Primarily uses a smartphone for social media, calls, and basic tasks.
  • Users who prefer a side-mounted fingerprint sensor

Use Cases for Xiaomi Poco M3 Pro 5G:

  • Daily usage including basic apps, social media, and web browsing.
  • Long battery life for users who don't want to worry about frequent charging.
  • Basic photography and quick snapshots.
  • A second phone or a phone for those who need 5G on a budget.

Price-to-Value Ratio:

  • OnePlus 9 Pro: Higher price, but justified by significantly better performance, display, and camera, delivering a premium experience for high-end users.
  • Xiaomi Poco M3 Pro 5G: Provides a more affordable price point with compromises in other areas. Is a great value for those seeking the best budget performance.

4. Decision Framework

Key Questions for Buyers:

  1. What is your budget? The price difference is the biggest determining factor.
  2. Do you need the best performance and display? OnePlus 9 Pro is the clear winner for demanding users.
  3. Do you prioritize battery life over other features? Poco M3 Pro 5G has a significantly bigger battery.

Scenario-Based Recommendations:

  • Scenario 1: Budget is a primary concern Choose the Xiaomi Poco M3 Pro 5G if you're price-sensitive and value battery life over high-end features.
  • Scenario 2: Top-tier performance and camera are essential: Choose the OnePlus 9 Pro if you're a power user who needs the best performance, display quality, and a versatile camera system.
  • Scenario 3: Balanced Needs: If you need good performance and display, but want to save some money, the Poco M3 Pro 5G is a better middle-ground option.

My Choice

If I were choosing, I would pick the OnePlus 9 Pro. My primary use case involves demanding tasks like gaming, high-quality media consumption, and professional photography. The significant advantage in performance, display quality, and camera capabilities of the OnePlus 9 Pro aligns more closely with my needs. While the Poco M3 Pro 5G offers a larger battery and a side-mounted fingerprint sensor, these advantages are not compelling enough to sway my decision. The OnePlus 9 Pro's premium build and extra features also play a major role. Although I would need to charge more often, the much faster charging speeds would help me mitigate any issues with the smaller battery.

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.