Asus Zenfone 9 vs Xiaomi 13 Ultra - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date September 15, 2022 April 21, 2023
Release Year 2022 2023

Physical

Volume 90.79 cm³ 110.79 cm³
Screen Size to Weight Ratio 3.49 "/g 2.96 "/g
Weight 169 g 227 g
Height 146.5 mm 163.2 mm
Width 68.1 mm 74.6 mm
Thickness 9.1 mm 9.1 mm
Foldable Design No No
Available Colors
  • Midnight Black
  • Starry Blue
  • Moonlight White
  • Sunset Red
  • Black
  • Yellow
  • Blue
  • White
  • Orange
  • Olive Green

Display

Screen Size 5.9 " 6.73 "
Resolution 1080 x 2400 1440 x 3200
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 84.2 % 89.8 %
Pixel Density 445 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 123.53 mAh/in² 110.39 mAh/in²
Battery Density 47.36 mAh/cm³ 45.13 mAh/cm³
Battery Capacity 4300 mAh 5000 mAh
NFC Support Yes Yes
Chipset Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm) Qualcomm SM8550-AB Snapdragon 8 Gen 2 (4 nm)
CPU Octa-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510) Octa-core (1x3.2 GHz Cortex-X3 & 2x2.8 GHz Cortex-A715 & 2x2.8 GHz Cortex-A710 & 3x2.0 GHz Cortex-A510)
GPU Adreno 730 Adreno 740

Connectivity

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

Software

Operating System Android Android
Initial OS Version 12 13
Maximum OS Version 14 14

Comparison Summary

Alright, let's dive deep into the Asus Zenfone 9 and Xiaomi 13 Ultra. We're not just looking at spec sheets; we're going to break down what these numbers actually mean for you, the user.

1. Specifications Breakdown

Here's a detailed breakdown of the specs, along with their real-world implications:

FeatureAsus Zenfone 9Xiaomi 13 UltraReal-World Implications
Design
Dimensions146.5 x 68.1 x 9.1 mm163.2 x 74.6 x 9.1 mmZenfone 9 is significantly more compact and pocketable. The Xiaomi 13 Ultra is noticeably larger, which might be less convenient for some users.
Weight169g227gZenfone 9 is considerably lighter, making it much more comfortable for one-handed use and extended periods of use.
BuildGorilla Glass VictusGorilla Glass Victus 2Both have excellent scratch resistance; the Victus 2 on the Xiaomi is slightly more durable on paper.
Display
Size5.9"6.73"Xiaomi 13 Ultra offers a much more immersive viewing experience; Zenfone 9 is more compact for better one-hand usability.
Resolution1080x24001440x3200Xiaomi 13 Ultra has a much sharper display, with finer details and clearer text.
PPI445522Xiaomi 13 Ultra provides a noticeably crisper display due to higher pixel density.
TechnologyAMOLEDAMOLEDBoth offer vibrant colors and deep blacks.
Refresh Rate120Hz120HzBoth offer smooth scrolling and animation.
Brightness1100 nits2600 nitsXiaomi 13 Ultra has superior outdoor visibility, especially under direct sunlight.
Performance
ChipsetSnapdragon 8+ Gen 1Snapdragon 8 Gen 2Xiaomi 13 Ultra has a newer generation processor, leading to improved performance.
Antutu Score1,232,5001,532,113Xiaomi 13 Ultra is significantly faster and smoother in day-to-day use and demanding apps and games.
GPUAdreno 730Adreno 740Xiaomi 13 Ultra has an updated GPU, delivering better graphics performance.
Camera
Standard Main50MP, f/1.8, 1/1.56"50MP, f/1.9, 1"Xiaomi 13 Ultra has a larger sensor for better low-light performance; Zenfone 9 slightly wider aperture should be better in low-light.
TelephotoNone50MP, f/1.8 & f/3.0Xiaomi 13 Ultra offers great optical zoom and depth of field, which Zenfone 9 lacks.
Wide Angle + Macro12MP, f/2.2, 1/2.55"50MP, f/1.8, 1/2.51"Xiaomi 13 Ultra's wide angle will give far better photos than the Zenfone 9 wide angle.
Selfie12MP, f/2.45, 1/2.93"32MP, f/2.0Xiaomi 13 Ultra has a much higher-resolution front camera with a wider aperture and will take better selfies.
Video8K@24, 4K@120, HDR, EIS8K@24, 4K@60, HDR, EISBoth phones can record excellent video quality but the Xiaomi 13 Ultra offers significantly more slow-motion modes.
Additional Camera FeaturesGimbal, RAWQuad Camera, Optical Zoom, RAW 14 bitsXiaomi 13 Ultra provides much more camera features than the Zenfone 9.
DxoMarkN/AMobile: 140, Selfie: 128Xiaomi 13 Ultra has been tested to have a good main and selfie camera performance.
Battery Life
Capacity4300mAh5000mAhXiaomi 13 Ultra has a larger battery, and likely better all-day endurance.
Charging30W90WXiaomi 13 Ultra charges much faster, which is very useful for those always on the go.
Additional FeaturesN/AWireless Charge, Reverse Wireless ChargingXiaomi 13 Ultra offers wireless and reverse wireless charging, while the Zenfone 9 offers none.
Software
OSAndroid 12, Upgradable to 14Android 13, Upgradable to 14Xiaomi 13 Ultra ships with a newer OS out of the box but both will be running the same OS eventually.
Connectivity
Wi-FiWi-Fi 6Wi-Fi 6Both phones have the same Wi-Fi version.
Bluetooth5.25.3Xiaomi 13 Ultra has a slightly newer Bluetooth version, which might offer slightly better power efficiency.
GPSGPS, GalileoGPS, GalileoBoth have similar but Zenfone 9 has slightly more systems for more accurate GPS.
Storage
Internal128/256 GB256/512/1024 GBXiaomi 13 Ultra offers significantly more storage options for all your apps, media, and files.
RAM8/16 GB12/16 GBBoth offer sufficient RAM for smooth multitasking, with high end options for the most demanding users.
ExpandableNoNoNeither phone has expandable storage so choose accordingly.
Audio
Audio QualityHi-Res, Stereo, Noise cancellationHi-Res, Stereo, Dolby AtmosXiaomi 13 Ultra offers Dolby Atmos for an immersive sound stage, Zenfone 9 has an additional microphone for better sound in calls.
Security
Featuresside-mountedbasicZenfone 9 has more advanced side mounted fingerprint sensor.
Sensors
SensorsHallBarometer, RGBZenfone 9 has Hall sensor for magnetic field sensing, Xiaomi 13 Ultra comes with Barometer and RGB for environmental sensing.

2. Key Insights

Asus Zenfone 9 Strengths:

  • Compact and Lightweight: This phone is a breath of fresh air for those tired of gigantic smartphones. Its size and weight make it extremely comfortable for one-handed use and carrying around.
  • Good Performance: The Snapdragon 8+ Gen 1 still packs a punch for smooth, everyday performance.
  • Unique Camera Gimbal: The gimbal feature is not found in many phones and is extremely useful.
  • Better Fingerprint Sensor: The side-mounted fingerprint sensor is better than basic sensors found on other phones.
  • Headphone Jack: Rarely found in high-end phones, the Zenfone 9 has a headphone jack for all the wired headphone fans.

Xiaomi 13 Ultra Strengths:

  • Stunning Display: The 6.73" display is sharper, brighter, and offers a more immersive experience.
  • Top-Tier Performance: The Snapdragon 8 Gen 2 ensures that this phone is a powerhouse for gaming and any demanding tasks.
  • Professional-Grade Camera System: The multiple cameras provide much more versatility and excellent image quality. The larger 1-inch sensor is amazing for low light photos.
  • Superior Battery and Charging: The larger battery and faster charging makes the phone great for power users.
  • Wireless Charging and Reverse Charging: Convenient charging options that aren't present in the Zenfone 9.

Trade-offs:

  • The Zenfone 9 compromises on screen size and camera versatility for portability and one-hand usability.
  • The Xiaomi 13 Ultra is bulkier and less convenient for those seeking a compact phone.

3. User Profiles and Recommendations

  • Asus Zenfone 9: Best for users who prioritize portability, one-handed use, a headphone jack, and still want great performance. Perfect for those who value a compact, no-fuss experience.
  • Xiaomi 13 Ultra: Best for users who value a top-of-the-line display, cutting-edge camera technology, top performance, all-day battery life, and wireless charging. Ideal for tech enthusiasts and those who rely heavily on their smartphone for photography, content creation, or gaming.

4. Buying Decision Framework

Here are three questions to help you decide:

  1. How important is the phone's size and weight to you?

    • If you value compactness and one-handed use, go for the Zenfone 9.
    • If a large, immersive display outweighs portability concerns, the Xiaomi 13 Ultra is the better option.
  2. How important is the camera for you?

    • If you want the best possible photo and video quality and versatility, the Xiaomi 13 Ultra is the clear winner.
    • If you need an amazing camera but with a smaller profile, then the Zenfone 9 might be sufficient for everyday use.
  3. How important is the phone's battery and charging capabilities?

    • If you need all-day battery life, wireless charging, and fast charging, the Xiaomi 13 Ultra is a better pick.
    • If good battery life and standard charging is sufficient, the Zenfone 9 won't disappoint.

Scenario-Based Recommendations:

  • The Content Creator: The Xiaomi 13 Ultra, with its versatile cameras and video features, is the better option for creating high-quality photos and videos.
  • The Commuter: The Asus Zenfone 9 is perfect for those who prefer a compact and lightweight device that doesn't take up too much space and is great for one handed use.
  • The Gamer: The Xiaomi 13 Ultra offers superior performance, a great display, and great battery and will provide a better gaming experience.
  • The Everyday User: The Zenfone 9 is perfect for users who simply want a dependable device for daily tasks like emails, calls, and social media use and don't want a massive phone.

My Choice:

If I had to choose, I would personally pick the Xiaomi 13 Ultra. While I love the compact nature of the Zenfone 9, the leap in camera versatility and performance of the Xiaomi is too significant to overlook. As a tech journalist, I often use my phone for photography and content creation, and the Xiaomi 13 Ultra would be an amazing all-in-one tool that would easily keep up with everything I throw at it. I also highly value a great display and the Xiaomi has the best display in any android phone.

I can appreciate the Zenfone 9's design and focus on ergonomics, but for my needs, the extra capabilities of the Xiaomi 13 Ultra outweigh the size trade-off. The Xiaomi 13 Ultra is a showcase of what's possible in modern smartphone technology. It’s not just about numbers; it’s about the experience, and the Xiaomi 13 Ultra delivers a truly premium, top-tier experience.

Alex Griffin
Alex Griffin

Technology analyst specializing in mobile devices and consumer electronics.

Core Expertise

  • Mobile technology analysis
  • Consumer electronics evaluation
  • Technical specification interpretation
  • User experience insights

Professional Mission Empowering readers to make informed technology decisions by transforming intricate specifications into understandable, practical guidance.

Demystifying technology, one device at a time.