Xiaomi Poco X3 Pro vs OnePlus 9 Pro - Detailed Phone Comparison

Detailed Comparison

Specification
OnePlus 9 Pro
OnePlus 9 Pro
Oneplus

General

Launch Date March 24, 2021 March 30, 2021
Release Year 2021 2021

Physical

Volume 119.33 cm³ 104.5 cm³
Screen Size to Weight Ratio 3.1 "/g 3.4 "/g
Weight 215 g 197 g
Height 165.3 mm 163.2 mm
Width 76.8 mm 73.6 mm
Thickness 9.4 mm 8.7 mm
Foldable Design No No
Available Colors
  • Phantom Black
  • Frost Blue
  • Metal Bronze
  • Forest Green
  • Morning Mist
  • Stellar Black

Display

Screen Size 6.67 " 6.7 "
Resolution 1080 x 2400 1440 x 3216
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 84.6 % 89.9 %
Pixel Density 395 PPI 525 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness 450 nits N/A
HBM Brightness N/A N/A
Peak Brightness N/A 1300 nits

Hardware

Battery Capacity per Screen Area 115.98 mAh/in² 100.25 mAh/in²
Battery Density 43.24 mAh/cm³ 43.06 mAh/cm³
Battery Capacity 5160 mAh 4500 mAh
NFC Support Yes Yes
Chipset Qualcomm Snapdragon 860 (7 nm) Qualcomm SM8350 Snapdragon 888 5G (5 nm)
CPU Octa-core (1x2.96 GHz Kryo 485 Gold & 3x2.42 GHz Kryo 485 Gold & 4x1.78 GHz Kryo 485 Silver) Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55
GPU Adreno 640 Adreno 660

Connectivity

USB Version 2.0 3.1
OTG Support 1 1
DisplayPort
DisplayPort Version N/A N/A
USB Features USB Type-C 2.0, OTG USB Type-C 3.1, OTG

Software

Operating System Android Android
Initial OS Version 11 11
Maximum OS Version 12 14

Comparison Summary

1. Specifications Comparison

FeatureXiaomi Poco X3 ProOnePlus 9 ProPractical Impact
Design
Dimensions165.3 × 76.8 × 9.4 mm163.2 × 73.6 × 8.7 mmPoco X3 Pro is larger and bulkier, potentially less comfortable in hand and pocket.
Weight215g197gOnePlus 9 Pro is lighter, more comfortable for extended use.
Display
Size6.67"6.7"Negligible difference in screen size.
Resolution1080x24001440x3216OnePlus 9 Pro offers a much sharper display with more detail.
Pixel Density (PPI)395525OnePlus 9 Pro has a noticeably crisper and clearer display.
TechnologyIPS LCDUnknownXiaomi Poco X3 Pro has an IPS LCD, OnePlus 9 Pro technology is unknown.
Refresh Rate120Hz120HzBoth offer smooth scrolling and gaming experiences.
Brightness0 nits1300 nitsOnePlus 9 Pro is significantly brighter, offering much better outdoor visibility.
Performance
ChipsetQualcomm Snapdragon 860 (7 nm)Qualcomm Snapdragon 888 5G (5 nm)OnePlus 9 Pro has a more powerful and efficient chipset, resulting in faster app loading and smoother overall performance.
AnTuTu Score627,869877,600OnePlus 9 Pro offers significantly better performance in demanding tasks and gaming.
GPUAdreno 640Adreno 660OnePlus 9 Pro has a better GPU, resulting in higher gaming performance.
Camera
Main Camera Sensor48MP, f/1.79, 1/2", Sony IMX58248MP, f/1.8, 1/1.43", Sony IMX789OnePlus 9 Pro has a larger sensor, capturing more light, resulting in better image quality, particularly in low light.
Selfie Camera20MP, f/2.2, 1/3.4", Samsung S5K3T216MP, f/2.4, 1/3.13", Sony IMX471Xiaomi Poco X3 Pro has a higher resolution front camera but smaller sensor size.
Telephoto LensNone8MP, f/2.4, 1/4.4", Omnivision OV08A10OnePlus 9 Pro offers optical zoom capabilities for closer shots, which is lacking on the Xiaomi.
Wide Angle Lens8MP, f/2.2, 1/4", Omnivision OV885650MP, f/2.2, 1/1.56", Sony IMX766OnePlus 9 Pro has much higher resolution and larger sensor for wide-angle shots, resulting in superior image quality.
Portrait Mode (Depth)2MP, f/2.4, 1/5", Omnivision OV02B1BNoneXiaomi Poco X3 Pro has a dedicated depth sensor for portrait shots.
Macro Lens2MP, f/2.4, 1/5", Hynix HI-259NoneXiaomi Poco X3 Pro has a dedicated macro lens for close-up shots.
Black & White LensNone2MP, f/2.4OnePlus 9 Pro has a dedicated black & white sensor.
Video RecordingUp to 4K@30fpsUp to 8K@30fpsOnePlus 9 Pro can record much higher-resolution video, has optical image stabilization, and offers more advanced features for content creators.
Video StabilizationEISHDR, EISOnePlus 9 Pro has much higher quality and offers HDR video recording.
DXOMark ScoreNot Available122OnePlus 9 Pro has a high camera score, while the Xiaomi has no rating.
Camera FeaturesStandardMore advanced: OIS, Ultra stable video, RAW, Night Mode, RAW 12 bitsOnePlus 9 Pro offers far more versatile photography tools and higher image quality.
Battery
Capacity5160mAh4500mAhXiaomi Poco X3 Pro has a larger battery, potentially offering longer battery life.
Charging Speed33W65WOnePlus 9 Pro charges much faster, minimizing downtime.
FeaturesNon-removableReverse, Wireless, and Reverse Wireless chargingOnePlus 9 Pro offers the option of wireless charging and reverse charging for other devices.
Software
OSAndroid 11 (Max 12)Android 11 (Max 14)OnePlus 9 Pro will receive more major Android updates.
Connectivity
WiFiWi-Fi 5Wi-Fi 6OnePlus 9 Pro has newer Wi-Fi for faster speeds.
BluetoothBluetooth 5.0Bluetooth 5.2OnePlus 9 Pro has a more up-to-date Bluetooth.
GPSStandardGPS (L1+L5)OnePlus 9 Pro has more advanced GPS, resulting in better location accuracy.
Storage
Internal128/256GB128/256GBSimilar storage options for both.
RAM6/8 GB8/12 GBOnePlus 9 Pro offers more RAM, allowing smoother multitasking and gaming.
ExpandableNoNoNeither supports expandable storage.
Audio
QualityHi-Res Audio, Stereo SpeakersDolby Atmos, Noise cancellation microphone, Stereo Speakers, 3 microphonesOnePlus 9 Pro delivers enhanced audio quality for music and calls.
Security
FeaturesSide-mounted fingerprintBasic fingerprint sensorXiaomi Poco X3 Pro provides side mounted fingerprint reader
Build Quality
Screen ProtectionGorilla Glass 6Gorilla Glass 5Xiaomi Poco X3 Pro offers slightly better protection against screen scratches.
Sensors
SensorsBiometric: Fingerprint; Motion: Accelerometer, Compass, Gyroscope; Proximity: Ultrasonic proximity virtualBiometric: Fingerprint; Proximity: Proximity; Motion: Accelerometer, Compass, Gyroscope;Xiaomi Poco X3 Pro additionally features: Ultrasonic proximity virtual; OnePlus 9 Pro additionally features: Proximity, Gravity; Comprehensive sensor suite suitable for advanced features and gaming

2. Key Differences Analysis

Xiaomi Poco X3 Pro Advantages:

  • Larger Battery: Offers a 5160mAh battery, likely providing longer battery life between charges.
  • Side-Mounted Fingerprint Sensor: Side-mounted sensor may be preferred by some users.
  • Ultrasonic Proximity Sensor: Additional feature for better proximity detection.
  • Screen Protection: Corning Gorilla Glass 6 may offer slightly better scratch resistance.

OnePlus 9 Pro Advantages:

  • Superior Display: Higher resolution, higher PPI, and significantly higher brightness resulting in a better viewing experience, especially outdoors.
  • More Powerful Performance: Faster Snapdragon 888 chipset and higher AnTuTu score, resulting in smoother overall performance, gaming, and multitasking.
  • Better Camera System: Larger sensors, wider aperture for better low light, more advanced features including 8K video recording, OIS, and a dedicated telephoto lens.
  • Faster Charging: 65W fast charging significantly reduces charging times.
  • Wireless Charging and Reverse Charging: Added convenience for users.
  • More RAM: Up to 12GB of RAM for better multitasking.
  • More Advanced Software Support: Receives more software updates, and has a newer Android OS.
  • Superior Audio: Dolby Atmos and 3 microphones offer better quality audio and voice capture.
  • More Advanced Connectivity: Supports Wi-Fi 6 and more advanced GPS.

Trade-offs:

  • The OnePlus 9 Pro’s advantages in display, performance, and camera come at the cost of a smaller battery and potentially higher price.
  • The Xiaomi Poco X3 Pro provides a larger battery and is probably the more budget friendly option.

3. User Profiles & Recommendations

Xiaomi Poco X3 Pro Ideal User:

  • Budget-conscious users who prioritize battery life and performance over advanced camera features.
  • Gamers seeking good gaming performance at a lower price point with a high refresh rate.
  • Users who prefer a side-mounted fingerprint sensor.
  • Users who do not need advanced camera features such as optical zoom, wireless charging, or top-tier image quality.

Use Cases:

  • Daily browsing, social media, and moderate gaming.
  • Long days without access to charging.
  • Users who need a dependable device for essential functions without paying premium prices.

OnePlus 9 Pro Ideal User:

  • Users who prioritize a high-quality display for media consumption and visual clarity.
  • Photography enthusiasts who desire advanced camera capabilities with features like optical zoom, OIS, and 8K video recording.
  • Power users who need top-tier performance for demanding tasks and gaming.
  • Users who appreciate the convenience of fast charging, wireless charging, and reverse charging.
  • Users who want to receive the latest software updates.
  • Users who want the best audio experience with Dolby Atmos and noise-canceling microphones.

Use Cases:

  • Professional photography and videography.
  • Heavy multitasking with demanding apps.
  • High-end gaming with the best possible graphics settings.
  • Users who require a fast and seamless experience in all areas.
  • Users who require cutting edge audio quality.

4. Decision Framework

Key Questions for Buyers:

  1. What is your budget? The Xiaomi Poco X3 Pro is a more affordable option while the OnePlus 9 Pro is a premium device.
  2. What are your primary use cases? Do you need top-tier performance and camera features, or do you prioritize battery life and affordability?
  3. How important are display quality and camera features? The OnePlus 9 Pro excels in both, while the Xiaomi Poco X3 Pro provides a more adequate experience at a lower price.

Scenario-Based Recommendations:

  • Budget-Conscious Gamer: If you prioritize gaming on a budget, the Xiaomi Poco X3 Pro offers good performance and a 120Hz refresh rate at a lower price.
  • Photography Enthusiast: If camera quality is your priority, the OnePlus 9 Pro's advanced camera system with larger sensors, optical zoom, and 8K video recording is a better choice.
  • Power User: If you require top-tier performance, the OnePlus 9 Pro's Snapdragon 888, higher RAM, and faster charging will provide a smoother and more efficient experience.
  • Everyday User: If you have a tight budget and need a phone for general use, the Poco X3 Pro is a solid option, as long as the camera and display are not priorities.

My Choice

If I were choosing between these two phones, I would pick the OnePlus 9 Pro. While the Xiaomi Poco X3 Pro has a larger battery, the OnePlus 9 Pro’s advantages in almost every other aspect outweigh this for my typical usage scenario. I value a high-quality display for media consumption, and the much brighter and higher-resolution display of the OnePlus 9 Pro would be more suitable. Additionally, I appreciate the significantly better camera system for photography and video recording, and the improved processor, wireless charging, and advanced features make it a better all-around device. Finally, I like the idea of receiving more software updates. Even though the Xiaomi would save me some money, I value the added experience and high quality that the OnePlus 9 Pro would provide, especially with the upgraded camera and the faster charging.

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.