Asus Zenfone 8 vs Xiaomi Redmi A3 - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date May 13, 2021 February 23, 2024
Release Year 2021 2024

Physical

Volume 90.23 cm³ 106.58 cm³
Screen Size to Weight Ratio 3.49 "/g 3.48 "/g
Weight 169 g 193 g
Height 148 mm 168.3 mm
Width 68.5 mm 76.3 mm
Thickness 8.9 mm 8.3 mm
Foldable Design No No
Available Colors
  • Obsidian Black
  • Horizon Silver
  • Midnight Black
  • Forest Green (Olive Green)
  • Star Blue (Lake Blue)

Display

Screen Size 5.9 " 6.71 "
Resolution 1080 x 2400 720 x 1650
Aspect Ratio 20:9 21:9
Screen-to-Body Ratio 82.9 % 82.9 %
Pixel Density 446 PPI 268 PPI
Refresh Rate 120 Hz 90 Hz
Typical Brightness N/A N/A
HBM Brightness 700 nits 500 nits
Peak Brightness 1100 nits N/A

Hardware

Battery Capacity per Screen Area 114.91 mAh/in² 111.05 mAh/in²
Battery Density 44.33 mAh/cm³ 46.91 mAh/cm³
Battery Capacity 4000 mAh 5000 mAh
NFC Support Yes Yes
Chipset Qualcomm SM8350 Snapdragon 888 5G (5 nm) Mediatek Helio G36 (12 nm)
CPU Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) Octa-core (4x2.2 GHz Cortex-A53 & 4x1.6 GHz Cortex-A53)
GPU Adreno 660 PowerVR GE8320

Connectivity

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

Software

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

Comparison Summary

1. Specifications Comparison

Design

FeatureAsus Zenfone 8Xiaomi Redmi A3Practical Impact
Dimensions148 × 68.5 × 8.9 mm168.3 × 76.3 × 8.3 mmThe Zenfone 8 is significantly more compact, making it easier to handle one-handed and more pocketable. The Redmi A3 is larger and may feel less comfortable for small hands.
Weight169g193gThe Zenfone 8 is noticeably lighter, which contributes to more comfortable long-term usage and portability. The Redmi A3 is heavier, which may lead to fatigue during prolonged use.

Display

FeatureAsus Zenfone 8Xiaomi Redmi A3Practical Impact
Size5.9"6.71"The Redmi A3 offers a larger screen, better for media consumption and multitasking. The Zenfone 8 is more compact, better for one-handed use.
Resolution1080x2400720x1650The Zenfone 8 has a much sharper display, with text and images appearing clearer and more detailed. The Redmi A3's display will appear less sharp.
Pixel Density (PPI)446268The Zenfone 8's higher pixel density means a visibly sharper image with more detail. The Redmi A3 will have a more pixelated appearance.
TechnologyAMOLEDIPS LCDThe Zenfone 8's AMOLED display offers superior contrast, deeper blacks, and more vibrant colors. The Redmi A3's IPS LCD will have less impressive contrast and color accuracy.
Refresh Rate120Hz90HzThe Zenfone 8's 120Hz refresh rate will offer slightly smoother scrolling and animations. The Redmi A3's 90Hz refresh rate is still decent but less fluid.
Brightness1100 nits0 nitsThe Zenfone 8's significantly higher brightness provides excellent outdoor visibility, even in bright sunlight. The Redmi A3's brightness is missing, but will be significantly worse for use under direct sunlight.

Performance

FeatureAsus Zenfone 8Xiaomi Redmi A3Practical Impact
ChipsetQualcomm Snapdragon 888 5G (5 nm)Mediatek Helio G36 (12 nm)The Zenfone 8's Snapdragon 888 offers significantly superior performance, faster app loading, smoother multitasking, and better gaming. The Redmi A3's Helio G36 is much less powerful, and struggles with demanding apps/games.
Antutu Score891,700127,000The Zenfone 8's benchmark score reflects its drastically higher performance, meaning it will handle heavy tasks with ease. The Redmi A3 will struggle to run modern apps and games smoothly.
GPUAdreno 660PowerVR GE8320The Zenfone 8's Adreno 660 provides a more powerful graphics processing for demanding games and graphical applications. The Redmi A3's PowerVR GE8320 is much less capable.

Camera

FeatureAsus Zenfone 8Xiaomi Redmi A3Practical Impact
Main Camera Resolution64MP8MPThe Zenfone 8 will capture photos with much more detail and clarity. The Redmi A3's camera will have limited detail, especially in low light conditions.
Main Camera Aperturef/1.8f/2.0The Zenfone 8's wider aperture allows for better low-light performance and shallower depth of field. The Redmi A3 will have more difficulty in low light situations.
Selfie Camera Resolution12MP5MPThe Zenfone 8 will take higher-resolution, more detailed selfies. The Redmi A3's selfie camera will capture much less detail.
Selfie Camera Aperturef/2.45f/2.2The Redmi A3's wider aperture for selfies will have slightly better light sensitivity. However, the Zenfone 8's higher resolution will likely provide better overall image quality
Wide Angle + Macro Camera12MPNoneThe Zenfone 8 has a versatile wide angle/macro lens, while the Redmi A3 is limited to its standard camera.
Video RecordingUp to 8K@24fps1080p@30fpsThe Zenfone 8 supports much higher quality video recording, suitable for professional use. The Redmi A3 is limited to basic video recording.
Video StabilizationEIS, OISNoneThe Zenfone 8’s EIS and OIS will result in much more stable videos, reducing shake and blur. The Redmi A3 lacks stabilization resulting in shaky videos.
DXOMark ScoreMobile: 116, Photo: 120, Video: 118Mobile: 45, Photo: 53, Video: 37The Zenfone 8 offers vastly superior image and video quality based on the DXOMark score
Camera Features4K/8K Video, OIS, PDAF, RAWBasic FeaturesThe Zenfone 8 offers more advanced photography and videography features. The Redmi A3 has a much more basic set of features.

Battery

FeatureAsus Zenfone 8Xiaomi Redmi A3Practical Impact
Capacity4000mAh5000mAhThe Redmi A3 has a larger battery, potentially offering longer battery life, although actual use depends on optimization and hardware usage.
Charging30W Fast Charging10W Fast ChargingThe Zenfone 8 charges significantly faster, reducing downtime. The Redmi A3 takes much longer to fully charge.
Battery TypeLi-PolymerLi-IonBoth are non-removable, and the Li-Polymer battery in the Zenfone 8 has a slightly better lifespan and is safer.

2. Key Differences Analysis

Asus Zenfone 8 Advantages

  • Superior Performance: The Snapdragon 888 chipset provides significantly faster processing, smoother multitasking, and better gaming performance.
  • High-Quality Display: The AMOLED display with higher resolution, pixel density, and brightness offers a much better viewing experience.
  • Advanced Camera System: The 64MP main camera, 12MP selfie camera, and wide-angle lens, coupled with advanced features and video capabilities, capture higher-quality photos and videos.
  • Faster Charging: 30W charging allows the Zenfone 8 to recharge much faster than the Redmi A3.
  • Premium Features: Includes features such as high quality audio and better display protection.
  • Comprehensive Sensor Suite: Includes a gyroscope, compass and other sensors making it suitable for advanced features and gaming.

Practical Implications: The Zenfone 8 is a powerhouse suitable for users who value performance, display quality, and camera capabilities. It’s ideal for gaming, heavy multitasking, and high-quality media consumption.

Xiaomi Redmi A3 Advantages

  • Larger Display: The larger 6.71" screen is better for media consumption and users who prefer a bigger display.
  • Larger Battery: The 5000mAh battery offers the potential for longer battery life.
  • Newer OS: Comes with Android 14 out of the box, while Zenfone 8 is stuck on Android 13.
  • Side-Mounted Fingerprint Sensor: A potentially more convenient placement for some users compared to the basic fingerprint sensor of the Zenfone 8.
  • Newer Bluetooth: Comes with Bluetooth 5.3 offering slightly better performance over the 5.2 of the Zenfone 8.

Practical Implications: The Redmi A3 is designed for users who want a budget-friendly phone with a large screen and long battery life. It is suitable for basic tasks like browsing, social media, and casual media consumption.

Significant Trade-offs

  • Performance: The Redmi A3’s Helio G36 struggles with demanding tasks, while the Zenfone 8 handles everything with ease.
  • Display Quality: The Zenfone 8's AMOLED display is vastly superior to the Redmi A3's IPS LCD in terms of clarity, vibrancy, and contrast.
  • Camera Capabilities: The Zenfone 8's camera significantly outperforms the Redmi A3's in terms of photo and video quality and advanced features.
  • Charging speed: The Zenfone 8 charges much faster than the Redmi A3.

3. User Profiles & Recommendations

Asus Zenfone 8

  • Ideal User: Power users, gamers, photographers, video content creators, or anyone who values high performance, excellent display quality, and advanced camera features.
  • Use Cases:
    • Playing graphically intensive games with smooth frame rates.
    • Editing photos and videos on the go.
    • Enjoying high-resolution content with vibrant colors and deep blacks.
    • Multitasking between demanding apps seamlessly.
    • Professional video and photography use cases.
    • Users needing a compact and powerful phone.
  • Price-to-Value: While likely more expensive, the Zenfone 8 offers a flagship-level experience, justifying the higher price for users who prioritize performance and quality.

Xiaomi Redmi A3

  • Ideal User: Budget-conscious users, those who primarily use their phone for basic tasks, or those who value battery life and a large screen.
  • Use Cases:
    • Browsing the internet and using social media apps.
    • Watching videos and consuming media.
    • Making phone calls and sending text messages.
    • Casual mobile gaming and basic productivity apps.
    • Users needing a large screen for accessibility.
  • Price-to-Value: The Redmi A3 is highly affordable, making it a good option for users who want a basic smartphone without breaking the bank.

4. Decision Framework

Key Questions to Consider:

  1. What is your primary use case? Is it gaming, media creation, or just basic communication?
  2. How important is display quality? Do you prioritize sharpness, vibrancy, and outdoor visibility?
  3. What is your budget? Are you willing to pay a premium for top-tier performance and features, or do you prefer an affordable option for basic tasks?

Scenario-Based Recommendations:

  • Scenario 1: Heavy user with a focus on performance: If you need the best performance, a great screen, and a top-tier camera, the Asus Zenfone 8 is the clear choice. The difference in performance is massive.
  • Scenario 2: Budget-conscious user for basic tasks: If you primarily use your phone for social media, browsing, and communication, the Xiaomi Redmi A3 is a more budget-friendly option, focusing on battery life and a larger screen.
  • Scenario 3: Media consumer: If you prioritize a large screen, the Xiaomi Redmi A3 provides a better screen size for the use case. However, consider that the display quality is significantly worse than the Asus Zenfone 8.
  • Scenario 4: Photography Enthusiast: If you enjoy taking photos and videos, the Asus Zenfone 8 is the better option due to its advanced camera system.

My Choice

If I were choosing between these two phones, I would choose the Asus Zenfone 8 without a doubt. While the Xiaomi Redmi A3 offers a larger battery and a bigger screen, the vast performance difference, superior display quality, and significantly better camera of the Zenfone 8 make it the better option overall. As an avid gamer and someone who appreciates high-quality content consumption, the Zenfone 8 would offer a much better user experience. Even though it's older, its high-end specifications, particularly its processor and display, make it perform much better than the low-end specifications of the Xiaomi Redmi A3.

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
  • Digital media communication
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Bridging technical complexity with engaging, accessible narratives.