Xiaomi Redmi Note 9T vs Asus Zenfone 8 - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 18, 2021 May 13, 2021
Release Year 2021 2021

Physical

Volume 113.39 cm³ 90.23 cm³
Screen Size to Weight Ratio 3.28 "/g 3.49 "/g
Weight 199 g 169 g
Height 161.2 mm 148 mm
Width 77.3 mm 68.5 mm
Thickness 9.1 mm 8.9 mm
Foldable Design No No
Available Colors
  • Nightfall Black
  • Daybreak Purple
  • Obsidian Black
  • Horizon Silver

Display

Screen Size 6.53 " 5.9 "
Resolution 1080 x 2340 1080 x 2400
Aspect Ratio 19.5:9 20:9
Screen-to-Body Ratio 84 % 82.9 %
Pixel Density 395 PPI 446 PPI
Refresh Rate N/A 120 Hz
Typical Brightness 450 nits N/A
HBM Brightness N/A 700 nits
Peak Brightness N/A 1100 nits

Hardware

Battery Capacity per Screen Area 117.26 mAh/in² 114.91 mAh/in²
Battery Density 44.09 mAh/cm³ 44.33 mAh/cm³
Battery Capacity 5000 mAh 4000 mAh
NFC Support Yes Yes
Chipset Mediatek Dimensity 800U (7 nm) Qualcomm SM8350 Snapdragon 888 5G (5 nm)
CPU Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55) Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55)
GPU Mali-G57 MC3 Adreno 660

Connectivity

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

Software

Operating System Android Android
Initial OS Version 10 11
Maximum OS Version 13

Comparison Summary

Smartphone Comparison: Xiaomi Redmi Note 9T vs. Asus Zenfone 8

1. Specifications Comparison

FeatureXiaomi Redmi Note 9TAsus Zenfone 8Practical Impact
Design
Dimensions161.2 × 77.3 × 9.1 mm148 × 68.5 × 8.9 mmThe Zenfone 8 is significantly more compact and pocketable, while the Note 9T is larger and may feel bulkier.
Weight199g169gThe Zenfone 8 is noticeably lighter, making it more comfortable for extended use.
Display
Size6.53"5.9"The Note 9T has a larger screen, better for media consumption; the Zenfone 8's smaller size makes it easier to use one-handed.
Resolution1080x23401080x2400Both are similar, the Zenfone 8's resolution is slightly higher.
Pixel Density395 PPI446 PPIThe Zenfone 8 has a sharper and more detailed display.
TechnologyIPS LCDAMOLEDThe Zenfone 8's AMOLED screen offers deeper blacks, better contrast, and more vibrant colors.
Refresh Rate60Hz120HzThe Zenfone 8 has smoother scrolling and animations, especially noticeable when gaming or browsing.
Brightness0 nits1100 nitsThe Zenfone 8 screen is much brighter and easier to see outdoors in sunlight.
Performance
ChipsetMediatek Dimensity 800U (7 nm)Qualcomm Snapdragon 888 5G (5 nm)The Zenfone 8 has a much faster and more powerful processor, suitable for demanding tasks and games.
AnTuTu Score343,150891,700The Zenfone 8 provides significantly better performance for everyday use, multitasking, and gaming.
GPUMali-G57 MC3Adreno 660The Zenfone 8 has a more powerful GPU for graphically intensive applications.
Camera
Main Camera48MP, f/1.79, 1/2" sensor64MP, f/1.8, 1/1.7" sensorThe Zenfone 8's camera has a higher resolution and larger sensor for better image quality, especially in low light.
Selfie Camera13MP, f/2.25, 1/3.1" sensor12MP, f/2.45, 1/2.93" sensorBoth are comparable, but the Zenfone 8 has a slightly larger sensor.
Portrait Mode2MP depth sensorNoneThe Note 9T offers a dedicated depth sensor for portrait mode, which the Zenfone 8 lacks, though it can still create portrait effects using software.
Macro Lens2MPNoneThe Note 9T has a dedicated macro lens for close-up shots, while the Zenfone 8 has a macro function within its wide-angle lens.
Wide-Angle LensNone12MP, f/2.2, 1/2.55" sensor (also macro)The Zenfone 8 offers a wide-angle lens which doubles as a macro lens, while the Note 9T does not have a wide angle camera.
VideoUp to 4K@30fpsUp to 8K@24fps, 4K@120fpsThe Zenfone 8 has much more advanced video capabilities with higher resolution and frame rate options.
Optical Stabilization (OIS)NoYesThe Zenfone 8 has OIS for better stability in videos and low-light photography.
Battery
Capacity5000mAh4000mAhThe Note 9T has a larger battery for potentially longer battery life.
Charging18W30WThe Zenfone 8 charges faster.
Software
OSAndroid 10Android 11 (upgradeable to 13)The Asus Zenfone 8 has a newer operating system and a longer update lifespan.
Connectivity
WiFiWiFi 5WiFi 6Asus Zenfone 8 has newer WiFi standard with higher speeds, better range and reliability
BluetoothBluetooth 5.1Bluetooth 5.2Asus Zenfone 8 has a newer Bluetooth version which is more reliable and energy-efficient
Storage & Memory
Internal64 GB or 128 GB128 GB or 256 GBThe Zenfone 8 offers more storage capacity, and has 256GB as top variant.
RAM4 GB6 GB, 8 GB, 12 GB, or 16 GBThe Zenfone 8 has significantly more RAM for better multitasking and overall performance.
Expandable StorageNoNoNeither phone offers expandable storage.
Audio
QualityHi-Res Audio, Stereo SpeakersHi-Res Audio, Stereo Speakers, Noise cancellation microphoneThe Asus Zenfone 8 has better audio hardware for calls and recordings.
Security
Fingerprint SensorSide-mountedBasic (Under-display or Side-mounted?)The Note 9T uses a more advanced side-mounted fingerprint sensor for quick unlock.
Build Quality
Screen ProtectionGorilla Glass 5Gorilla Glass VictusThe Zenfone 8 has more scratch and damage resistant screen.
Sensors
SensorsAccelerometer, Compass, Gyroscope, Ultrasonic proximity virtualAccelerometer, Compass, Gyroscope, ProximityBoth phones have comprehensive sensor suite.

2. Key Differences Analysis

Xiaomi Redmi Note 9T Advantages:

  • Larger Battery: The 5000mAh battery potentially offers longer battery life for users who need their phone to last all day without needing a recharge.
  • Larger Display: The 6.53-inch screen is beneficial for media consumption, browsing, and accessibility for users who prefer a larger viewing area.
  • Dedicated Macro and Depth Sensors: The inclusion of these sensors gives flexibility for users who specifically need them for their photography.
  • Lower price: Typically the Redmi Note series is more affordable than flagship compact phones like the Zenfone 8

Asus Zenfone 8 Advantages:

  • Superior Performance: The Snapdragon 888 chipset offers significantly faster processing power and better graphics performance, making it smoother and more responsive for demanding apps and gaming.
  • Better Display: The AMOLED screen with 120Hz refresh rate offers a visually superior experience with vibrant colors, smooth animations, and higher brightness, making it great for multimedia and outdoor visibility.
  • Advanced Camera System: The higher resolution main sensor, OIS, and advanced video recording capabilities (including 8K recording) result in better photo and video quality.
  • Compact Size: Its smaller size makes it easier to handle one-handed, a major benefit for many users.
  • Faster Charging: 30W charging speeds means that the phone can be charged from empty to full faster than its competitor.
  • Better Software Support: With Android 11 at launch and guaranteed updates, the Zenfone 8 will be supported for longer than the Note 9T.
  • Higher RAM: Options for up to 16GB RAM means better performance in heavy multitasking and smoother app loading.
  • Stereo Speakers and Microphone The phone's inclusion of a noise-cancelling microphone and multiple microphones will benefit users who take calls or record audio regularly.
  • Superior Build Quality: The screen is better protected with Corning Gorilla Glass Victus which offers more scratch and damage resistance.

Trade-offs:

  • Size and Battery: The Zenfone 8 sacrifices battery capacity and screen size for a more compact form factor and more premium specifications.
  • Price: The Zenfone 8 is generally more expensive than the Redmi Note 9T due to its high-end components.

3. User Profiles & Recommendations

Ideal Users for Xiaomi Redmi Note 9T:

  • Budget-conscious users: Users who need a reliable phone for everyday use at an affordable price.
  • Media Consumers: Users who watch a lot of videos, movies, and streaming content.
  • Users requiring long battery life: Those who prioritize a long-lasting battery for all-day use.
  • Users who prefer larger displays users who want a larger phone for easier viewing and reading.

Ideal Users for Asus Zenfone 8:

  • Power Users and Gamers: Users who need maximum performance for demanding apps and games.
  • Photography Enthusiasts: Users who want a versatile camera system capable of high-quality photos and videos.
  • Users who prefer smaller phones Those who want a pocketable phone that can be easily used with one hand.
  • Users who value screen quality: Those who want a crisp and vibrant display with high brightness for easy outdoor use.
  • Users who value software support: Users who want a phone with regular software updates and a smooth android experience

Specific Use Cases:

  • Xiaomi Redmi Note 9T: Ideal for users who prioritize battery life and screen size for casual browsing, social media, and media consumption. Good for individuals who use the phone as their main media device.
  • Asus Zenfone 8: Great for gaming, photo and video recording, multitasking, and users who want a compact powerhouse with premium features. It is an ideal choice for creators and power users who are looking for a more compact phone.

4. Decision Framework

Key Questions for Buyers:

  1. What is your priority: battery life or performance? If battery life is most important, the Redmi Note 9T is likely the better choice. However, if performance is most important, the Zenfone 8 is the clear winner.
  2. Do you prefer a compact or large phone? Consider the difference in size and weight, if the small form factor is important, the Zenfone 8 is the better choice. If you prefer a large screen, go for the Note 9T.
  3. What is your budget? If budget is a big constraint, the Redmi Note 9T offers decent specs for a more affordable price. However, the Zenfone 8 gives much better value for its premium price.

Scenario-Based Recommendations:

  • Scenario 1: Budget User
    • Recommendation: Xiaomi Redmi Note 9T.
    • Reasoning: Offers great value for money with good battery life and a large display for daily tasks.
  • Scenario 2: Power User/Gamer
    • Recommendation: Asus Zenfone 8.
    • Reasoning: Provides significantly better performance, graphics, camera, and display experience.
  • Scenario 3: On-the-go photographer
    • Recommendation: Asus Zenfone 8
    • Reasoning: Higher video quality, OIS, Wide Angle lens and overall premium photography capabilities makes it the best option.

Final Decision

If I were to choose between these two phones, I would choose the Asus Zenfone 8.

Reasoning:

My priority is performance and camera quality, and the Zenfone 8 is vastly superior in these aspects. While the larger battery of the Note 9T is attractive, the gains in display quality, processing power, camera, and overall smoothness that the Zenfone 8 offers would provide a far better user experience for my needs. Additionally the compact size and the future software updates make it a more compelling choice. I would be willing to sacrifice the slightly larger screen size and larger battery for a premium experience.

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.