OnePlus 9 vs Xiaomi 13 Ultra - Detailed Phone Comparison

Detailed Comparison

Specification
OnePlus 9
OnePlus 9
Oneplus

General

Launch Date March 26, 2021 April 21, 2023
Release Year 2021 2023

Physical

Volume 103.29 cm³ 110.79 cm³
Screen Size to Weight Ratio 3.41 "/g 2.96 "/g
Weight 192 g 227 g
Height 160 mm 163.2 mm
Width 74.2 mm 74.6 mm
Thickness 8.7 mm 9.1 mm
Foldable Design No No
Available Colors
  • Winter Mist
  • Arctic Sky
  • Astral Black
  • Black
  • Yellow
  • Blue
  • White
  • Orange
  • Olive Green

Display

Screen Size 6.55 " 6.73 "
Resolution 1080 x 2400 1440 x 3200
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 87.2 % 89.8 %
Pixel Density 402 PPI 522 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness N/A N/A
HBM Brightness N/A 1300 nits
Peak Brightness 1100 nits 2600 nits

Hardware

Battery Capacity per Screen Area 104.89 mAh/in² 110.39 mAh/in²
Battery Density 43.57 mAh/cm³ 45.13 mAh/cm³
Battery Capacity 4500 mAh 5000 mAh
NFC Support Yes Yes
Chipset Qualcomm SM8350 Snapdragon 888 5G (5 nm) Qualcomm SM8550-AB Snapdragon 8 Gen 2 (4 nm)
CPU Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) Octa-core (1x3.2 GHz Cortex-X3 & 2x2.8 GHz Cortex-A715 & 2x2.8 GHz Cortex-A710 & 3x2.0 GHz Cortex-A510)
GPU Adreno 660 Adreno 740

Connectivity

USB Version 3.1 3.2
OTG Support 1 1
DisplayPort 1
DisplayPort Version N/A N/A
USB Features USB Type-C 3.1, OTG USB Type-C 3.2, OTG, DisplayPort

Software

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

Comparison Summary

Smartphone Comparison: OnePlus 9 vs. Xiaomi 13 Ultra

1. Specifications Comparison

FeatureOnePlus 9Xiaomi 13 UltraPractical Impact
Design
Launch Date2021-03-262023-04-21Xiaomi 13 Ultra is a much newer phone, benefiting from newer technology
Dimensions160 × 74.2 × 8.7 mm163.2 × 74.6 × 9.1 mmXiaomi 13 Ultra is slightly taller and thicker, meaning slightly less pocketable and can be less comfortable for smaller hands.
Weight192g227gOnePlus 9 is significantly lighter, making it more comfortable to hold for extended periods.
Display
Size6.55"6.73"Xiaomi 13 Ultra has a slightly larger screen, better for multimedia consumption and gaming.
Resolution1080x24001440x3200Xiaomi 13 Ultra has a noticeably sharper display, leading to better text and image clarity.
Pixel Density402 ppi522 ppiXiaomi 13 Ultra offers a significantly more crisp and detailed viewing experience.
TechnologyAMOLEDAMOLEDBoth offer vibrant colors and deep blacks characteristic of AMOLED displays.
Refresh Rate120Hz120HzBoth provide smooth scrolling and animations.
Brightness1100 nits2600 nitsXiaomi 13 Ultra offers dramatically better outdoor visibility, crucial for bright sunlight conditions.
Performance
ChipsetSnapdragon 888 5G (5 nm)Snapdragon 8 Gen 2 (4 nm)Xiaomi 13 Ultra has a significantly more powerful and efficient processor, leading to faster app loading and better gaming.
AnTuTu Score880,9001,532,113Xiaomi 13 Ultra offers a substantially higher benchmark score, translating to noticeable performance improvements.
GPUAdreno 660Adreno 740Xiaomi 13 Ultra's more powerful GPU ensures smoother graphics in games and demanding apps.
Battery
Capacity4500mAh5000mAhXiaomi 13 Ultra has a larger battery, likely offering longer battery life.
Charging65W fast charging90W fast chargingXiaomi 13 Ultra charges significantly faster, reducing downtime.
Charging Features15W Wireless Charging50W Wireless, 10W Reverse ChargingXiaomi 13 Ultra has more advanced charging features, including faster wireless charging and reverse charging capabilities.
Camera
Main Camera48MP, f/1.79, 1/1.4" IMX68950MP, f/1.9, 1" IMX989Xiaomi 13 Ultra has a larger sensor and higher resolution (in theory), potentially offering superior low-light performance and detail.
Telephoto CameraNone50MP, f/1.8, 1/2.51" IMX858Xiaomi 13 Ultra offers a dedicated telephoto lens, allowing for better zoom capabilities.
Selfie Camera16MP, f/2.4, 1/3.13" IMX47132MP, f/2.0, Sensor unknownXiaomi 13 Ultra has a higher resolution front camera, potentially offering sharper selfies.
Telephoto LensNone50MP, f/3.0, 1/2.51" IMX858Xiaomi 13 Ultra offers a second dedicated telephoto lens for increased zoom versatility
Wide Angle Lens50MP, f/2.2, 1/1.56" IMX766NoneOnePlus 9 has a dedicated wide angle lens while Xiaomi 13 Ultra does not.
Wide Angle + Macro CameraNone50MP, f/1.8, 1/2.51" IMX858Xiaomi 13 Ultra has a wide angle lens with macro capabilities.
Black & White Camera2MP, f/2.4, Sensor UnknownNoneOnePlus 9 has a dedicated black & white sensor while Xiaomi 13 Ultra does not.
VideoUp to 8K@30fpsUp to 8K@24fpsBoth offer high-resolution video recording capabilities, suitable for professional-grade content creation. Xiaomi 13 Ultra offers more slow-motion options
DXOMark ScoreNot AvailableMobile: 140, Selfie: 128Xiaomi 13 Ultra has a high DXOMark score, indicating superior camera performance (OnePlus 9 has not been scored).
Camera FeaturesTriple Camera, RAW 12 bitsQuadruple camera, RAW 14 bits, OISXiaomi 13 Ultra includes more advanced camera features such as OIS, and more bit depth RAW capture
Software
OSAndroid 11 (Upgradable to 13)Android 13 (Upgradable to 14)Xiaomi 13 Ultra ships with a more recent Android version and is guaranteed to receive further updates compared to OnePlus 9.
Connectivity
Wi-FiWi-Fi 6Wi-Fi 6Both offer the same Wi-Fi standards.
BluetoothBluetooth 5.2Bluetooth 5.3Xiaomi 13 Ultra features a newer Bluetooth version for potentially improved connectivity.
GPSGPS, A-GPS, GLONASS, etcA-GPS, GLONASS, Beidou, etcXiaomi 13 Ultra supports more satellite systems for improved location accuracy and tracking.
SIMDual SIMDual SIMBoth phones support dual SIM functionality.
Storage
Internal Storage128GB or 256GB256GB, 512GB or 1024GBXiaomi 13 Ultra offers significantly more storage options, essential for users with large media libraries or apps.
RAM8GB or 12GB12GB or 16GBXiaomi 13 Ultra has more RAM, beneficial for multitasking and heavy gaming sessions.
Expandable StorageNoNoNeither phone supports expandable storage, users must choose the storage option wisely.
Audio
Audio QualityDolby Atmos, Stereo SpeakersDolby Atmos, Hi-Res Audio, Stereo SpeakersXiaomi 13 Ultra provides Hi-Res audio capability, while both have stereo speakers and Dolby Atmos.
Security
Fingerprint SensorBasic fingerprint sensorBasic fingerprint sensorBoth have standard fingerprint sensors for basic security.
Build Quality
Screen ProtectionGorilla Glass 5Gorilla Glass Victus 2Xiaomi 13 Ultra has a significantly more robust screen protection against scratches and drops.
SensorsAccelerometer, Gyroscope, Compass, ProximityAccelerometer, Gyroscope, Compass, Proximity, BarometerXiaomi 13 Ultra features additional environmental sensors

2. Key Differences Analysis

OnePlus 9 Advantages:

  • Lighter and More Compact: The OnePlus 9 is significantly lighter and slightly more compact, making it more comfortable for prolonged use and easier to handle.
  • Dedicated Wide Angle Camera: The OnePlus 9 has a dedicated wide angle lens, compared to Xiaomi 13 Ultra which has a wide angle lens that doubles as a macro.
  • More Affordable: Being an older model, the OnePlus 9 is likely available at a lower price point.

Xiaomi 13 Ultra Advantages:

  • Superior Display: Higher resolution, pixel density, and brightness provide a significantly better viewing experience, particularly outdoors.
  • Significantly Better Performance: The newer chipset results in much faster app loading, smoother multitasking, and enhanced gaming capabilities.
  • Enhanced Camera System: The Xiaomi 13 Ultra boasts a more versatile camera setup with superior sensor technology, dedicated telephoto lenses, higher DXOMark score, and more recording options.
  • Faster Charging and Better Battery: Larger battery and faster wired and wireless charging allow for longer usage and reduced downtime.
  • More Storage and RAM: With higher RAM and significantly more storage options, the Xiaomi 13 Ultra is better for power users.
  • Newer Software: Comes with a newer OS version with the promise of a longer software update lifespan.
  • Superior Build Quality: Uses Gorilla Glass Victus 2, offering better protection from screen damage.
  • Better Connectivity: Includes a newer Bluetooth version and supports more satellite systems for GPS.

Trade-offs:

  • The Xiaomi 13 Ultra is significantly heavier and bulkier, which may not be comfortable for all users.
  • The Xiaomi 13 Ultra is a much more expensive device.
  • The Xiaomi 13 Ultra does not have a dedicated black & white sensor and wide angle lens.

3. User Profiles & Recommendations

OnePlus 9 - Ideal User:

  • Budget-conscious users: Those looking for a powerful phone at a more affordable price point.
  • Users with Smaller Hands: The lighter weight and compact dimensions make it easier to handle.
  • Users Who Value Wide Angle Photos: Those who want a dedicated wide angle camera.
  • Basic usage: Suitable for everyday tasks like browsing, social media, and moderate gaming.

Use Cases for OnePlus 9:

  • Casual photography and social media sharing.
  • Everyday communication, browsing, and entertainment.
  • Moderate gaming with decent performance.
  • Users not overly concerned with outdoor screen visibility or super fast charging.

Xiaomi 13 Ultra - Ideal User:

  • Professional Photographers/Videographers: Users who need the best possible mobile camera capabilities.
  • Power Users and Gamers: Those who require maximum performance, large storage and RAM.
  • Outdoor Users: Those who need a display with excellent outdoor visibility.
  • Tech Enthusiasts: Those who want the latest technologies in a phone.
  • Users who value telephoto zoom capability: Those who prioritize zoom capabilities and versatility.

Use Cases for Xiaomi 13 Ultra:

  • Professional-grade photography and videography.
  • Heavy gaming with demanding graphics.
  • Multitasking with multiple apps simultaneously.
  • Extended use without needing to constantly recharge.
  • Users who want a premium build quality and the latest tech.

Price-to-Value Ratio:

  • The OnePlus 9 offers a good price-to-value ratio for basic use and moderate performance needs.
  • The Xiaomi 13 Ultra offers exceptional features, but at a much higher price point. The value is very high for those who need premium features but less so for basic use.

4. Decision Framework

Key Questions for Buyers:

  1. Budget: How much are you willing to spend on a new phone?
  2. Primary Use: What will you primarily use the phone for (e.g., photography, gaming, daily tasks)?
  3. Size and Weight: How important is it for the phone to be lightweight and easy to handle?

Scenario-Based Recommendations:

  • Scenario 1: Budget Conscious & Basic Use - If budget is the primary concern, and the user requires only basic performance and camera capabilities, the OnePlus 9 is the better option.

  • Scenario 2: Prioritizing Telephoto Zoom Capabilities - If the user is looking for excellent zoom capabilities, the Xiaomi 13 Ultra would be the better choice due to its dual telephoto lenses.

  • Scenario 3: High-End Camera & Performance - If the user prioritizes top-tier camera performance, along with the latest features, the Xiaomi 13 Ultra is the clear winner.

  • Scenario 4: Balanced Use & Portability - If the user is looking for a balance between price, performance and portability, the OnePlus 9 will be the better choice.

What I Would Choose and Why

Personally, I would choose the Xiaomi 13 Ultra. While the OnePlus 9 is a capable phone, the Xiaomi 13 Ultra offers a significantly superior experience in almost every aspect that matters to me. I value the enhanced camera versatility with its dual telephoto lenses, the superior display especially for outdoor visibility, the much faster performance, and the improved battery life. I also value that the Xiaomi 13 Ultra has the most recent updates and support.

Although the Xiaomi 13 Ultra is heavier and more expensive, the advantages it offers in terms of camera quality, performance, display, and battery life outweigh the downsides for my usage. As someone who enjoys photography and consumes a lot of media, these features are very important. The significantly better performance and software support also ensure that the phone would remain relevant for longer. Therefore, the additional cost is justified for the features and experience that the Xiaomi 13 Ultra provides.

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.