Xiaomi Redmi Note 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 113.39 cm³ 111.96 cm³
Screen Size to Weight Ratio 3.28 "/g 3.03 "/g
Weight 199 g 224 g
Height 161.2 mm 163.8 mm
Width 77.3 mm 76.8 mm
Thickness 9.1 mm 8.9 mm
Foldable Design No No
Available Colors
  • Nightfall Black
  • Daybreak Purple
  • 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 84 % 88.2 %
Pixel Density 395 PPI 388 PPI
Refresh Rate N/A 144 Hz
Typical Brightness 450 nits N/A
HBM Brightness N/A 1600 nits
Peak Brightness N/A 2500 nits

Hardware

Battery Capacity per Screen Area 117.26 mAh/in² 119.65 mAh/in²
Battery Density 44.09 mAh/cm³ 49.12 mAh/cm³
Battery Capacity 5000 mAh 5500 mAh
NFC Support Yes Yes
Chipset Mediatek Dimensity 800U (7 nm) Qualcomm SM8650-AB Snapdragon 8 Gen 3 (4 nm)
CPU Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55) Octa-core (1x3.3 GHz Cortex-X4 & 3x3.2 GHz Cortex-A720 & 2x3.0 GHz Cortex-A720 & 2x2.3 GHz Cortex-A520)
GPU Mali-G57 MC3 Adreno 750

Connectivity

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

Software

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

Comparison Summary

Smartphone Comparison: Xiaomi Redmi Note 9T vs. Asus Zenfone 11 Ultra

1. Specifications Comparison

FeatureXiaomi Redmi Note 9TAsus Zenfone 11 UltraPractical Impact
Design
Launch Date2021-01-182024-04-14The Asus Zenfone 11 Ultra is a much newer device, benefiting from more recent advancements.
Dimensions161.2 × 77.3 × 9.1 mm, 199g163.8 × 76.8 × 8.9 mm, 224gThe Asus Zenfone 11 Ultra is slightly taller and heavier, the Xiaomi Redmi Note 9T is lighter and may be more comfortable for extended use.
Display
Size6.53"6.78"Asus Zenfone 11 Ultra has a slightly larger screen, better for media consumption and gaming.
Resolution1080x23401080x2400Both are similar, providing sharp images for everyday use.
PPI395388Very similar pixel density; both offer crisp visuals.
TechnologyIPS LCDAMOLEDThe Asus Zenfone 11 Ultra's AMOLED display provides richer colors, deeper blacks, and better power efficiency with dark themes.
Refresh Rate60Hz144HzAsus Zenfone 11 Ultra's higher refresh rate leads to smoother scrolling and animations.
Brightness0 nits2500 nitsAsus Zenfone 11 Ultra is much brighter and significantly better for use in direct sunlight.
Performance
ChipsetMediatek Dimensity 800U (7 nm)Qualcomm Snapdragon 8 Gen 3 (4 nm)Asus Zenfone 11 Ultra's processor provides substantially faster performance for demanding tasks, gaming, and overall responsiveness.
AnTuTu Score343,1501,532,000Asus Zenfone 11 Ultra has drastically better performance in benchmarks, indicating a huge real-world difference in speed.
GPUMali-G57 MC3Adreno 750Asus Zenfone 11 Ultra has a far superior GPU for demanding graphics and gaming.
Battery
Capacity5000mAh5500mAhAsus Zenfone 11 Ultra's larger battery will offer longer battery life.
Charging18W65WAsus Zenfone 11 Ultra charges much faster, minimizing downtime.
Features22.5W charger inbox15W wireless, 10W reverse wiredAsus Zenfone 11 Ultra offers wireless charging capabilities and can charge other devices.
Camera
Main Camera48MP, f/1.79, 1/2", 0.80µm50MP, f/1.9, 1/1.56", 1.00µmAsus Zenfone 11 Ultra has a larger sensor and larger pixel size which likely results in better low light performance, more detail and less noise.
Selfie Camera13MP, f/2.25, 1/3.1", 1.12µm32MP, f/2.5, 1/3.2", 0.70µmAsus Zenfone 11 Ultra has a higher resolution selfie camera, but the Xiaomi Redmi Note 9T has a larger sensor and a wider aperture which results in better light sensitivity.
Telephoto LensNone32MP, f/2.4, 0.70µmAsus Zenfone 11 Ultra offers a telephoto lens for better zoom capabilities; Xiaomi Redmi Note 9T has no telephoto lens.
Wide Angle LensNone13MP, f/2.2, 1.12µmAsus Zenfone 11 Ultra offers an ultrawide lens for capturing wider scenes. Xiaomi Redmi Note 9T has no ultrawide lens.
Portrait Mode2MP, f/2.4, 1/5", 1.75µmNoneXiaomi Redmi Note 9T has a dedicated depth sensor for portrait mode.
Macro Lens2MP, f/2.4, 1/5", 1.75µmNoneXiaomi Redmi Note 9T has a dedicated macro lens for close-up shots.
Video4K@30fps, 1080p@60fps8K@24fps, 4K@60fps, 1080p@240fps, 720p@480fpsAsus Zenfone 11 Ultra has superior video capabilities with higher resolutions, frame rates and better image stabilization.
DxoMarkNo Data125 Main ScoreAsus Zenfone 11 Ultra has a significantly higher rating with a mobile score of 125, suggesting superior overall camera performance.
FeaturesDigital Zoom, Triple camera, DIS, AF, TF, MF, CS, GT, Pan, HDR, FD, WB, ISO, EC, SC, ST4K Video, 8K Video, DZ, TC, DIS, OIS, Gimbal, AF, TF, CAF, PDAF, PDAF O, CS, GT, Pan, HDR, FD, WB, ISO, EC, SC, ST, RAWAsus Zenfone 11 Ultra offers a more advanced camera system with features like OIS, gimbal, and RAW capture.
Software
OSAndroid 10Android 14 (upgradable to 16)Asus Zenfone 11 Ultra comes with a much more modern OS with future updates.
Connectivity
WiFi802.11acWiFi 7 (802.11be)Asus Zenfone 11 Ultra supports the latest WiFi standards for much faster speeds and better connectivity.
Bluetooth5.1 LE, A2DP, LDAC, AAC5.4 LE, AVRCP, HID, OPP, APT-x, LDAC, SBC, AACAsus Zenfone 11 Ultra features newer Bluetooth with more supported audio profiles for improved audio transmission capabilities.
GPSGPS, A-GPS, Galileo, GLONASS (L1)GPS, A-GPS, GLONASS, Beidou, QZSS, Galileo, GPS (L1+L5), GLONASS (L1), BeiDou (B1), Galileo (E1+E5a), BeiDou (B2), NavIC System, QZSS (L1 + L5)Asus Zenfone 11 Ultra offers more satellite systems for better location accuracy.
SIMDual SIM Dual StandbyDual SIM Dual StandbyBoth support dual SIM functionality.
Storage
Internal64 GB or 128 GB256 GB or 512 GBAsus Zenfone 11 Ultra has much more internal storage for apps, media, and files.
RAM4 GB12 GB or 16 GBAsus Zenfone 11 Ultra offers significantly more RAM for smoother multitasking and better performance.
ExpandableNoNoNeither phone allows expandable storage.
Audio
QualityHi-Res Audio, Stereo SpeakersHi-Res Audio, Noise cancellation microphone, Stereo Speakers, 2 microphonesAsus Zenfone 11 Ultra offers noise cancellation and two microphones improving voice capture quality.
Security
FeaturesSide-mounted fingerprint sensorBasic fingerprint sensorXiaomi Redmi Note 9T uses a more advanced side-mounted fingerprint sensor.
Build
ProtectionCorning Gorilla Glass 5Corning Gorilla Glass Victus 2Asus Zenfone 11 Ultra has superior screen protection from scratches and impacts.
SensorsAccelerometer, Compass, Gyroscope, Ultrasonic proximity virtualAccelerometer, Compass, Gyroscope, Proximity, Gravity, HallAsus Zenfone 11 Ultra offers additional sensors like proximity, gravity and hall sensors

2. Key Differences Analysis

Xiaomi Redmi Note 9T Advantages:

  • Lighter: At 199g, it is significantly more comfortable for extended use than the Asus Zenfone 11 Ultra.
  • Wider Aperture Selfie Camera: The f/2.25 aperture on the selfie camera allows for better low-light performance than the f/2.5 on the Asus.
  • Dedicated Depth and Macro Lenses: Offers dedicated depth and macro sensors which are not present on the Asus.
  • Side-Mounted Fingerprint Sensor: Offers a more ergonomic fingerprint sensor placement.
  • Price: This device is significantly cheaper than the Asus Zenfone 11 Ultra.

Asus Zenfone 11 Ultra Advantages:

  • Superior Display: AMOLED with 144Hz refresh rate and 2500 nits brightness provides significantly better image quality, smoothness, and outdoor visibility.
  • Massive Performance Boost: The Snapdragon 8 Gen 3 chipset delivers vastly superior performance for all tasks, including gaming.
  • Advanced Camera System: Includes telephoto and wide-angle lenses, 8K video recording, OIS, and higher resolution main and selfie sensors.
  • Significantly More Storage: Offers 256GB or 512GB of internal storage and up to 16 GB of RAM for smoother multitasking and more space for large files.
  • Faster Charging and Wireless Charging: 65W fast charging, 15W wireless charging and reverse wireless charging for convenience.
  • Modern Software and Connectivity: Comes with Android 14 (upgradeable to 16) and supports the latest WiFi and Bluetooth standards.
  • Superior Build Quality: Offers Corning Gorilla Glass Victus 2 protection.
  • Better Audio Recording Quality: Equipped with 2 microphones and noise cancellation.

Trade-offs:

  • The Xiaomi Redmi Note 9T offers more features for close-up and portrait photography whereas the Asus Zenfone 11 Ultra trades those features for Telephoto, Wide Angle, OIS, and better video capture.
  • The Asus Zenfone 11 Ultra is significantly heavier and larger than the Xiaomi Redmi Note 9T
  • The Xiaomi Redmi Note 9T is much more affordable than the Asus Zenfone 11 Ultra.

3. User Profiles & Recommendations

Xiaomi Redmi Note 9T:

  • Ideal User: Budget-conscious users seeking a reliable phone for everyday tasks with decent performance. Users that are prioritising cost over high performance.
  • Use Cases:
    • Basic social media use, web browsing, and email.
    • Casual gaming.
    • Users who prefer a lighter device.
    • Users who value more macro and portrait photography functionality over zoom capabilities.
  • Price-to-Value: Offers good value for a budget phone that performs well in day-to-day tasks.

Asus Zenfone 11 Ultra:

  • Ideal User: Performance-focused users who want the best possible display, camera and performance. Users that are looking for a high-end flagship device.
  • Use Cases:
    • Demanding gaming, video editing, and content creation.
    • Heavy multitasking, running multiple apps simultaneously.
    • Users who prioritize high-quality photography and video capture.
    • Users that are looking for a long lasting battery and fast charging.
    • Users who want the latest software and best connectivity.
    • Users who want a device with high-end build quality and better screen protection.
  • Price-to-Value: Justifies its premium price with top-tier performance, high-end features, and a superior user experience.

4. Decision Framework

Key Questions:

  1. What is your budget? The Xiaomi Redmi Note 9T is significantly cheaper.
  2. How important is performance and gaming to you? The Asus Zenfone 11 Ultra is superior in this aspect.
  3. What are your priorities regarding camera features? The Asus Zenfone 11 Ultra has a far superior camera system with Telephoto, Wide angle, 8k recording and OIS.

Scenario-Based Recommendations:

  • Budget User: If you have a strict budget, the Xiaomi Redmi Note 9T is a good option.
  • Performance User: If you want the best possible performance and gaming experience, the Asus Zenfone 11 Ultra is the clear choice.
  • Camera Enthusiast: If you value versatile camera capabilities including high-quality zoom capabilities, the Asus Zenfone 11 Ultra is superior.
  • Everyday User: If you want a device for normal day to day usage, both devices are adequate with the Asus Zenfone 11 Ultra being a higher end device and the Xiaomi Redmi Note 9T being a more budget option.

My Choice

If I were choosing between these two phones, I would personally choose the Asus Zenfone 11 Ultra. While it is considerably more expensive, the massive performance boost, superior display, significantly better camera system with versatile features, larger RAM and Storage capacity, and better build quality justify the higher price for my use case. The advanced camera system, in particular, is a major draw for me as I often take pictures and videos and prioritize image quality. The superior display is also very valuable to me as I often consume content and value the smoother refresh rate and brightness. Furthermore, I value having the latest version of Android with future updates. The 65W fast charging and wireless charging functionality will also be invaluable for my lifestyle and I value a faster charging experience. Ultimately, while the Xiaomi Redmi Note 9T offers good value for the money, I am willing to pay a premium for the top-tier features and performance offered by the Asus Zenfone 11 Ultra.

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.