Xiaomi Redmi 9T vs Asus Zenfone 11 Ultra - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 18, 2021 April 14, 2024
Release Year 2021 2024

Physical

Volume 120.44 cm³ 111.96 cm³
Screen Size to Weight Ratio 3.3 "/g 3.03 "/g
Weight 198 g 224 g
Height 162.3 mm 163.8 mm
Width 77.3 mm 76.8 mm
Thickness 9.6 mm 8.9 mm
Foldable Design No No
Available Colors
  • Carbon Gray
  • Ocean Green
  • Sunrise Orange
  • Twilight Blue
  • Eternal Black
  • Skyline Blue
  • Misty Gray
  • Desert Sand

Display

Screen Size 6.53 " 6.78 "
Resolution 1080 x 2340 1080 x 2400
Aspect Ratio 19.5:9 20:9
Screen-to-Body Ratio 83.4 % 88.2 %
Pixel Density 395 PPI 388 PPI
Refresh Rate N/A 144 Hz
Typical Brightness 400 nits N/A
HBM Brightness N/A 1600 nits
Peak Brightness N/A 2500 nits

Hardware

Battery Capacity per Screen Area 140.71 mAh/in² 119.65 mAh/in²
Battery Density 49.82 mAh/cm³ 49.12 mAh/cm³
Battery Capacity 6000 mAh 5500 mAh
NFC Support Yes Yes
Chipset Qualcomm SM6115 Snapdragon 662 (11 nm) Qualcomm SM8650-AB Snapdragon 8 Gen 3 (4 nm)
CPU Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) Octa-core (1x3.3 GHz Cortex-X4 & 3x3.2 GHz Cortex-A720 & 2x3.0 GHz Cortex-A720 & 2x2.3 GHz Cortex-A520)
GPU Adreno 610 Adreno 750

Connectivity

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

Software

Operating System Android Android
Initial OS Version 10 14
Maximum OS Version 16

Comparison Summary

1. Specifications Comparison

Design

FeatureXiaomi Redmi 9TAsus Zenfone 11 UltraPractical Impact
Dimensions162.3 × 77.3 × 9.6 mm163.8 × 76.8 × 8.9 mmThe Asus is slightly taller and thinner, making it a bit more pocketable, while the Redmi 9T is a bit bulkier.
Weight198g224gThe Redmi 9T is significantly lighter, making it more comfortable to hold for extended periods. The Asus is heavier, making it feel more premium but potentially less comfortable for long use.
BuildThe Asus has a superior screen protection with Gorilla Glass Victus 2 vs the Redmi 9T which has Gorilla Glass 3.

Display

FeatureXiaomi Redmi 9TAsus Zenfone 11 UltraPractical Impact
Size6.53"6.78"The Asus offers a larger display, providing a more immersive viewing experience for videos and games.
Resolution1080x23401080x2400Visually indistinguishable. Both offer sharp visuals.
PPI395388Practically identical sharpness.
TechnologyIPS LCDAMOLEDThe Asus's AMOLED screen provides superior contrast, deeper blacks, and more vibrant colors. This is a big difference for media consumption.
Refresh Rate60Hz144HzThe Asus has significantly smoother scrolling and animations. This can drastically improve the perceived responsiveness of the device.
Brightness0 nits2500 nitsThe Asus is far superior in bright daylight use, with much better outdoor visibility.

Performance

FeatureXiaomi Redmi 9TAsus Zenfone 11 UltraPractical Impact
ChipsetQualcomm Snapdragon 662 (11 nm)Qualcomm Snapdragon 8 Gen 3 (4 nm)The Asus has a much more powerful processor, resulting in significantly faster app loading, smoother multitasking, and better gaming performance.
AnTuTu Score174,5001,532,000The Asus has dramatically better performance, making it more responsive for demanding tasks and future-proof.
GPUAdreno 610Adreno 750The Asus has a significantly more powerful GPU which is essential for gaming and graphics-intensive apps.

Camera

FeatureXiaomi Redmi 9TAsus Zenfone 11 UltraPractical Impact
Main Camera48MP, f/1.79, 1/2" sensor50MP, f/1.9, 1/1.56" sensorThe Asus has a larger sensor that captures more light, resulting in better image quality, especially in low-light conditions, despite the smaller aperture.
Selfie Camera8MP, f/2.032MP, f/2.5, 1/3.2" sensorThe Asus has a much higher resolution selfie camera, which results in sharper photos with more detail, though with a smaller sensor and aperture.
Telephoto LensNone32MP, f/2.4The Asus offers optical zoom capabilities, allowing for better photos at a distance. The Redmi 9T lacks this feature.
Wide Angle Lens8MP, f/2.2, 1/4" sensor13MP, f/2.2The Asus captures wider shots at a higher resolution, resulting in better quality for landscapes or group photos.
Depth Camera2MP, f/2.4NoneThe Redmi 9T has a dedicated depth sensor for portrait mode.
Macro Lens2MP, f/2.4NoneThe Redmi 9T has a dedicated macro lens for extreme close up shots.
Video1080p@30fps8K@24fps, 4K@60fpsThe Asus is capable of recording much higher-resolution video, suitable for more professional applications.
Video StabilizationNoYes (EIS)The Asus has electronic image stabilization (EIS), which provides smoother videos and is especially important when walking or in unstable conditions.
Slow Motion120 fps480 fpsThe Asus can capture higher quality slow motion videos.

Battery

FeatureXiaomi Redmi 9TAsus Zenfone 11 UltraPractical Impact
Capacity6000mAh5500mAhThe Redmi 9T has a larger battery capacity which may lead to longer battery life, but it depends on other factors like software and display optimization.
Charging18W fast charging65W fast chargingThe Asus charges much faster, reducing downtime significantly.
FeaturesReverse charging, 22.5W charger inbox15W wireless charging, 10W reverse wiredThe Redmi 9T has a charger in the box, while the Asus offers wireless charging, catering to different charging habits.

2. Key Differences Analysis

Xiaomi Redmi 9T Advantages

  • Lighter: Significantly lighter (26g) making it more comfortable for extended use.
  • Larger Battery: Larger battery capacity (500mAh/8%), offering potentially longer battery life.
  • Reverse Charging: Can reverse charge other devices.
  • Lower Price: Likely to be significantly more affordable, making it a budget-friendly option.
  • Dedicated Macro and Depth Cameras: Offers two extra rear cameras, for specific use cases.

Asus Zenfone 11 Ultra Advantages

  • Superior Display: AMOLED screen with 144Hz refresh rate and 2500 nits brightness, offering excellent visual quality, smoothness, and visibility.
  • Much Better Performance: The Snapdragon 8 Gen 3 chipset offers dramatically better CPU and GPU performance.
  • Superior Cameras: Higher resolution main, selfie, and wide-angle cameras with a dedicated telephoto lens, resulting in better image quality and versatility.
  • Advanced Video: Supports up to 8K video recording, offering professional-level video capture.
  • Faster Charging: 65W fast charging significantly reduces charge time.
  • Wireless Charging: Provides convenient wireless charging capabilities.
  • Newer Software: Android 14 vs Android 10 on the Redmi 9T
  • Better connectivity: Faster WiFi and Bluetooth versions.
  • More storage and RAM: Larger internal storage and RAM options

Significant Trade-offs

  • Xiaomi Redmi 9T: The biggest trade-off is the considerably weaker performance, display quality, and camera capabilities, though it counters with battery size and lower price.
  • Asus Zenfone 11 Ultra: The biggest trade-offs are higher price and increased weight.

3. User Profiles & Recommendations

Xiaomi Redmi 9T

  • Ideal Users: Budget-conscious users, those who prioritize battery life, and those who require a lighter device.
  • Use Cases:
    • Everyday browsing, social media, and messaging
    • Long commutes or travel where battery life is critical
    • Users who do not demand high-end gaming or demanding apps
    • Users who need a basic phone with reliable performance
  • Price-to-value: Offers a good price to value ratio for users who prioritize long lasting battery on a budget.

Asus Zenfone 11 Ultra

  • Ideal Users: Users who want top-tier performance, exceptional display quality, versatile cameras, and fast charging.
  • Use Cases:
    • Demanding gaming and graphic intensive applications
    • Professional photography and videography
    • Heavy multitasking and productivity
    • Users who prioritize top-end features
  • Price-to-value: Offers a high price to value ratio for premium features.

4. Decision Framework

Key Questions for Buyers

  1. What is your budget? The Xiaomi Redmi 9T will be significantly more affordable.
  2. What is your priority: performance, or battery? The Asus excels in performance and cameras, while the Redmi 9T offers potentially longer battery life.
  3. How important is display and camera quality? The Asus offers a far better display and vastly superior cameras, while the Redmi is more budget oriented.

Scenario-Based Recommendations

  • Scenario 1: Budget Shopper: If budget is the primary concern and performance is not a priority, the Xiaomi Redmi 9T is the more appropriate choice.
  • Scenario 2: Performance and Media Enthusiast: For gamers, power users, and those who consume a lot of multimedia, the Asus Zenfone 11 Ultra is the clear winner.
  • Scenario 3: Photography and Videography: If you need high-quality photos and videos, the Asus Zenfone 11 Ultra's advanced camera system is the best fit.
  • Scenario 4: Long Battery Life User: If battery is paramount and performance and display are of less concern, the Xiaomi Redmi 9T is more suitable.

My Choice

I would choose the Asus Zenfone 11 Ultra. While the Redmi 9T is a very capable budget phone, the difference in performance, display quality, and camera capabilities of the Zenfone 11 Ultra is so significant that for anyone who can afford it, it is the much better choice. The 144Hz AMOLED display alone makes a huge difference in the user experience. I would much rather have a better display, faster performance, and a better camera, and I'm willing to sacrifice some battery capacity and pay more for these premium features.

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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Bridging technical complexity with engaging, accessible narratives.