Asus Zenfone 8 vs Xiaomi Redmi A2 - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date May 13, 2021 March 24, 2023
Release Year 2021 2023

Physical

Volume 90.23 cm³ 115.25 cm³
Screen Size to Weight Ratio 3.49 "/g 3.4 "/g
Weight 169 g 192 g
Height 148 mm 164.9 mm
Width 68.5 mm 76.8 mm
Thickness 8.9 mm 9.1 mm
Foldable Design No No
Available Colors
  • Obsidian Black
  • Horizon Silver
  • Aqua Blue
  • Classic Black
  • Sea Green

Display

Screen Size 5.9 " 6.52 "
Resolution 1080 x 2400 720 x 1600
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 82.9 % 81 %
Pixel Density 446 PPI 269 PPI
Refresh Rate 120 Hz N/A
Typical Brightness N/A 400 nits
HBM Brightness 700 nits N/A
Peak Brightness 1100 nits N/A

Hardware

Battery Capacity per Screen Area 114.91 mAh/in² 117.62 mAh/in²
Battery Density 44.33 mAh/cm³ 43.39 mAh/cm³
Battery Capacity 4000 mAh 5000 mAh
NFC Support Yes No
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 & 4x1.7 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 microUSB 2.0

Software

Operating System Android Android
Initial OS Version 11 12
Maximum OS Version 13

Comparison Summary

1. Specifications Comparison

FeatureAsus Zenfone 8Xiaomi Redmi A2Practical Impact
Design
Dimensions148 x 68.5 x 8.9 mm164.9 x 76.8 x 9.1 mmAsus Zenfone 8 is significantly smaller and more pocketable. Redmi A2 is larger and may be less comfortable for one-handed use.
Weight169g192gAsus Zenfone 8 is noticeably lighter, making it more comfortable for extended use.
Display
Size5.9"6.52"Xiaomi Redmi A2 has a larger screen, better for media consumption; Asus Zenfone 8 is more compact, easier to handle.
Resolution1080 x 2400720 x 1600Asus Zenfone 8 has a much sharper display, resulting in clearer text and images. Redmi A2's display will appear less detailed.
PPI446269Asus Zenfone 8 offers significantly greater sharpness and detail compared to Redmi A2.
TechnologyAMOLEDIPS LCDAsus Zenfone 8 provides richer colors, deeper blacks, and better contrast; superior viewing experience, especially in dark environments.
Refresh Rate120Hz60HzAsus Zenfone 8's display offers noticeably smoother scrolling and animations. Redmi A2 will feel less fluid.
Brightness1100 nits0 nitsAsus Zenfone 8 is significantly brighter and provides much better visibility in direct sunlight. The Redmi A2's brightness is unknown so might not be usable in sunlight.
Performance
ChipsetQualcomm Snapdragon 888 5G (5 nm)Mediatek Helio G36 (12 nm)Asus Zenfone 8 has a significantly more powerful processor; Faster app loading, smoother multitasking and superior gaming.
AnTuTu Score891,700127,000Asus Zenfone 8 offers dramatically better performance across all tasks. Redmi A2 is suitable for basic use.
GPUAdreno 660PowerVR GE8320Asus Zenfone 8 has a much more capable graphics processor. Better gaming and graphically intensive apps.
Battery
Capacity4000 mAh5000 mAhXiaomi Redmi A2 has a larger battery, potentially offering longer battery life.
Charging30W Fast Charging10W Fast ChargingAsus Zenfone 8 charges much faster, minimizing downtime.
Camera
Rear Camera64MP, f/1.88MP, f/2.0Asus Zenfone 8 captures much more detailed images with wider aperture better for low light.
Front Camera12MP, f/2.455MP, f/2.2Asus Zenfone 8 captures higher resolution selfies.
Wide Angle12MPNot AvailableAsus Zenfone 8 offers a wide angle camera for more flexibility
VideoUp to 8K@24fpsUp to 1080p@30fpsAsus Zenfone 8 offers significantly higher quality video recording, better stabilization, and features.
DxOMark Score116 (Mobile)Not AvailableAsus Zenfone 8 has been tested, providing a benchmark for its camera capabilities.
Software
OSAndroid 11 (upgradable to 13)Android 12Asus Zenfone 8 supports Android 13. Redmi A2's max version is not specified.
Connectivity
Wi-FiWi-Fi 6 (802.11ax)Wi-Fi 4 (802.11n)Asus Zenfone 8 has faster and more stable Wi-Fi performance, supporting the latest standards.
Bluetooth5.25.0Asus Zenfone 8 offers a newer and potentially more efficient version of Bluetooth.
GPSMore comprehensive support (Dual-Band)Basic GPS SupportAsus Zenfone 8 has more accurate and reliable GPS performance due to its additional support for navigation standards.
Storage
InternalUp to 256 GBUp to 64 GBAsus Zenfone 8 provides much more storage space for apps, photos, videos.
RAMUp to 16 GBUp to 4 GBAsus Zenfone 8 allows for smoother multitasking and better performance with more RAM.
ExpandableNoNoNeither device offers expandable storage.
Audio
QualityHi-Res, Stereo SpeakersBasic Audio FeaturesAsus Zenfone 8 offers a higher quality audio experience with better speakers and features.
Security
FeaturesFingerprint SensorBasic FeaturesAsus Zenfone 8 offers biometric security.
Build Quality
Screen ProtectionGorilla Glass VictusUnknownAsus Zenfone 8 offers superior scratch and impact resistance. Redmi A2's screen protection is unknown.
Sensors
SensorsMore comprehensive suiteLimited sensor arrayAsus Zenfone 8 has more sensors, enabling advanced functionality and applications.

2. Key Differences Analysis

Asus Zenfone 8 Advantages:

  • Significantly Superior Performance: The Snapdragon 888 chipset provides a much faster, smoother user experience for everything from basic tasks to heavy gaming.
  • High-Quality Display: The AMOLED display with 120Hz refresh rate offers a noticeably better visual experience with vibrant colors, deeper blacks, and fluid animations. Significantly brighter for use in daylight.
  • Enhanced Camera System: The main and selfie cameras offer higher resolution, and the inclusion of a wide-angle lens provides greater photographic flexibility. Much higher quality video recording.
  • Faster Charging: 30W fast charging allows for quick battery top-ups.
  • Better Build Quality: Gorilla Glass Victus offers superior screen protection.
  • Better connectivity: Newer Wi-Fi and Bluetooth standards for faster more stable connections.
  • Better Audio: Hi-Res Audio, stereo speakers, and noise cancellation microphone

Xiaomi Redmi A2 Advantages:

  • Larger Battery: 5000 mAh battery offers potentially longer battery life although it may be offset by the more efficient processor and screen of the Asus.
  • Newer operating system: Comes with Android 12 out of the box.

Trade-offs:

  • The Asus Zenfone 8 is significantly more expensive but offers a premium experience.
  • The Xiaomi Redmi A2 offers a budget experience with a compromise on key specs.
  • The Asus Zenfone 8 has a smaller display but more powerful performance and better build quality.

3. User Profiles & Recommendations

Asus Zenfone 8:

  • Ideal User: Power users who need a high-performance phone for gaming, multitasking, and photography. Users who value a premium visual experience and compact form factor.
  • Use Cases:
    • Playing graphically intensive games.
    • Editing photos and videos on the go.
    • Smooth multitasking between multiple apps.
    • Enjoying high-quality multimedia content.
    • Require a reliable device in bright outdoor environments.
  • Price-to-Value: Premium price point, however, given the specifications and features it can be considered to offer great value for those who need its specific performance and feature set.

Xiaomi Redmi A2:

  • Ideal User: Budget-conscious users who need a basic smartphone for everyday tasks like calls, messaging, and light social media use.
  • Use Cases:
    • Simple web browsing and social media.
    • Basic photography.
    • Casual gaming.
    • Users who prioritize battery life.
  • Price-to-Value: Offers a budget option but requires significant compromises in performance and features.

4. Decision Framework

Key Questions for Buyers:

  1. Performance Needs: Do you need a powerful phone for gaming, heavy multitasking, and demanding apps, or are your needs limited to basic functions?
  2. Display Quality: How important is a high-quality display with vibrant colors, sharp resolution, and smooth refresh rates?
  3. Budget: What is your price range and are you willing to pay extra for premium features?

Scenario-Based Recommendations:

  • Scenario 1: High-Performance User: If you need top-tier performance, a great display, a quality camera, and a compact form factor the Asus Zenfone 8 is the clear choice.
  • Scenario 2: Budget User: If your budget is very limited and you only need a basic smartphone for simple tasks, the Xiaomi Redmi A2 is suitable.
  • Scenario 3: Balanced User: If you need a combination of solid performance and a high quality display the Asus Zenfone 8 is recommended.

What I Would Choose

Based on my analysis and considering diverse user needs, I would choose the Asus Zenfone 8. The performance difference between the two is vast, offering a smoother, faster, and significantly more enjoyable user experience. While the Xiaomi Redmi A2 has a larger battery, the overall trade-offs in display, camera quality, performance, and build quality make the Zenfone 8 the superior phone. Even if the Xiaomi Redmi A2 is cheaper, the compromises it makes in essential areas of a smartphone outweigh its one advantage of a larger battery. I value a high quality display and performance for daily use.

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.