Oppo A15 vs Asus Zenfone 9 - Detailed Phone Comparison

Detailed Comparison

Specification
Oppo A15
Oppo A15
Oppo

General

Launch Date October 27, 2020 September 15, 2022
Release Year 2020 2022

Physical

Volume 97.69 cm³ 90.79 cm³
Screen Size to Weight Ratio 3.73 "/g 3.49 "/g
Weight 175 g 169 g
Height 164 mm 146.5 mm
Width 75.4 mm 68.1 mm
Thickness 7.9 mm 9.1 mm
Foldable Design No No
Available Colors
  • Dynamic Black
  • Mystery Blue
  • Midnight Black
  • Starry Blue
  • Moonlight White
  • Sunset Red

Display

Screen Size 6.52 " 5.9 "
Resolution 720 x 1600 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 83 % 84.2 %
Pixel Density 269 PPI 445 PPI
Refresh Rate N/A 120 Hz
Typical Brightness 480 nits N/A
HBM Brightness N/A N/A
Peak Brightness N/A 1100 nits

Hardware

Battery Capacity per Screen Area 99.51 mAh/in² 123.53 mAh/in²
Battery Density 43.3 mAh/cm³ 47.36 mAh/cm³
Battery Capacity 4230 mAh 4300 mAh
NFC Support No Yes
Chipset Mediatek MT6765 Helio P35 (12 nm) Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm)
CPU Octa-core (4x2.35 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53) Octa-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510)
GPU PowerVR GE8320 Adreno 730

Connectivity

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

Software

Operating System Android Android
Initial OS Version 10 12
Maximum OS Version 14

Comparison Summary

1. Specifications Comparison

FeatureOppo A15Asus Zenfone 9Practical Impact
Design
Dimensions164 × 75.4 × 7.9 mm146.5 × 68.1 × 9.1 mmZenfone 9 is significantly more compact, better for one-handed use and pocketability. A15 is larger, potentially offering a larger grip for some users.
Weight175g169gNegligible difference in weight.
Build Quality (Screen)Corning Gorilla Glass 3Corning Gorilla Glass VictusZenfone 9 offers superior scratch and shatter resistance.
Display
Size6.52"5.9"A15 provides a larger viewing area for media consumption. Zenfone 9's smaller size contributes to its compact design.
Resolution720x16001080x2400Zenfone 9's display is much sharper, resulting in clearer text and images.
Pixel Density (PPI)269445Zenfone 9 has significantly sharper and clearer display.
TechnologyIPS LCDAMOLEDZenfone 9 boasts better contrast, deeper blacks, more vibrant colors, and better power efficiency (especially with dark mode).
Refresh Rate60Hz120HzZenfone 9 provides smoother scrolling, animations, and gaming experiences.
Brightness0 nits1100 nitsZenfone 9 is significantly more visible in direct sunlight.
Performance
ChipsetMediatek MT6765 Helio P35 (12 nm)Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm)Zenfone 9 offers vastly superior performance for all tasks, including gaming, multitasking, and demanding apps.
AnTuTu Score113,0001,232,500Zenfone 9 is significantly faster and more responsive.
GPUPowerVR GE8320Adreno 730Zenfone 9 provides significantly better graphics performance for gaming and video editing.
RAM2/3/4 GB8/16 GBZenfone 9 handles multitasking and demanding apps much more smoothly.
Camera
Main Camera13MP, f/2.250MP, f/1.8, 1/1.56" Sony IMX766Zenfone 9 captures much more detailed and higher-quality images, especially in low light.
Selfie Camera5MP, f/2.412MP, f/2.45, 1/2.93" Sony IMX663Zenfone 9 produces sharper and clearer selfies.
Ultrawide CameraN/A12MP, f/2.2Zenfone 9 offers an ultrawide lens for capturing wider scenes.
Video Recording1080p@30fps8K@24fps, 4K@120fpsZenfone 9 captures significantly higher-resolution and smoother video with advanced stabilization.
StabilizationDigitalOIS + EISZenfone 9 provides much smoother and more stable video recordings, especially in motion.
Battery
Capacity4230mAh4300mAhSimilar battery life, but real-world endurance depends on usage patterns and the more efficient chipset of the Zenfone 9 could improve battery life.
Charging10W30WZenfone 9 charges much faster.
Storage
Internal32/128GB128/256GBZenfone 9 offers more storage options.
ExpandableNoNoNeither phone supports expandable storage.
Connectivity
Wi-FiWi-Fi 4Wi-Fi 6EZenfone 9 provides faster and more reliable Wi-Fi connectivity.
Bluetooth5.05.2Zenfone 9 supports newer Bluetooth features and codecs for improved audio quality and connectivity.
Software
OSAndroid 10Android 12 (upgradable to 14)Zenfone 9 has a much newer operating system with more features, security updates, and a longer software support lifespan.
Audio
Audio QualityBasicStereo speakers, Hi-Res Audio, Noise cancellation microphoneZenfone 9 offers a significantly better audio experience for music, videos, and calls.

2. Key Differences Analysis

Oppo A15 Advantages:

  • Larger Display: The larger 6.52" screen might be preferable for users who prioritize screen real estate for media consumption.
    • Practical Implication: Better for watching videos and reading content.
  • Dedicated Macro and Depth Camera: Offers the flexibility to capture macro shots and add depth effects to portraits.
    • Practical Implication: Provides creative options for photography enthusiasts.
  • Potentially lower price: Often available at a lower price point.

Asus Zenfone 9 Advantages:

  • Compact Size: Extremely pocketable and easy to handle with one hand.
    • Practical Implication: Comfortable for users with smaller hands or those who value portability.
  • Superior Performance: The Snapdragon 8+ Gen 1 chipset delivers exceptional speed and responsiveness.
    • Practical Implication: Apps launch faster, games run smoother, and multitasking is seamless.
  • High-Quality Display: The AMOLED display with a 120Hz refresh rate offers vibrant colors, deep blacks, and smooth visuals.
    • Practical Implication: Enhanced viewing experience for all types of content.
  • Excellent Camera System: The 50MP main camera and ultrawide lens capture stunning photos and videos.
    • Practical Implication: Capable of producing professional-quality images and videos in various lighting conditions.
  • Fast Charging: The 30W fast charging quickly replenishes the battery.
    • Practical Implication: Minimizes downtime and keeps you powered up throughout the day.
  • Advanced Features: Includes stereo speakers, Hi-Res Audio, IP68 water resistance, and a side-mounted fingerprint sensor.
    • Practical Implication: Provides a premium user experience with enhanced audio, durability, and security.
  • Software Support: More up-to-date Android version with future updates.
    • Practical Implication: Access to the latest features and security patches.

Trade-offs:

  • Oppo A15: Lower performance, outdated software, and a basic camera system are major drawbacks.
  • Asus Zenfone 9: Higher price point and lack of expandable storage might be deterrents for some users.

3. User Profiles & Recommendations

Oppo A15 Ideal Users:

  • Budget-conscious users who need a basic smartphone for everyday tasks like calling, texting, and browsing.
  • Users who prioritize a large screen for media consumption and don't require high performance or advanced features.
  • Individuals who are comfortable with an older Android version and don't need the latest software updates.

Use Cases for Oppo A15:

  • Primary phone for elderly individuals who need a simple and easy-to-use device.
  • Backup phone for emergencies or travel.
  • Basic phone for children who don't require demanding apps or games.

Asus Zenfone 9 Ideal Users:

  • Users who prioritize performance, camera quality, and a compact design.
  • Gamers and power users who need a smartphone that can handle demanding apps and games.
  • Photography enthusiasts who want a versatile camera system with excellent image quality.
  • Users who value a premium user experience with advanced features and fast charging.

Use Cases for Asus Zenfone 9:

  • Mobile gaming on the go.
  • Capturing high-quality photos and videos for social media or professional use.
  • Multitasking between demanding apps and tasks.
  • Enjoying immersive audio and video experiences.
  • Using as a daily driver for all communication and entertainment needs.

4. Decision Framework

Key Questions for Buyers:

  1. What is your budget? The Oppo A15 is significantly more affordable, while the Zenfone 9 is a premium device.
  2. How important is performance and camera quality to you? The Zenfone 9 offers vastly superior performance and a much better camera system.
  3. Do you value a compact design and premium features? The Zenfone 9 is designed for one-handed use and has a more advanced feature set.

Scenario-Based Recommendations:

  • Budget User: If your budget is limited and you only need a basic smartphone, the Oppo A15 might suffice.
  • Performance-Oriented User: If you prioritize performance, camera quality, and a compact design, the Asus Zenfone 9 is the clear winner.
  • Casual User: If you value a balance of features and performance, the Asus Zenfone 9 is still recommended due to its superior overall experience.

My Choice

I would choose the Asus Zenfone 9 without hesitation. While the Oppo A15 might be appealing due to its potentially lower price, the Zenfone 9 offers a vastly superior user experience in almost every aspect. The performance difference alone is a game-changer, making the Zenfone 9 a much more enjoyable and efficient device to use for everyday tasks and demanding applications. The superior display, camera, and battery charging speed are additional benefits that justify the higher price point. While the lack of expandable storage is a minor drawback, the available 128GB or 256GB should be sufficient for most users. The compact size is also a major advantage, making it easy to handle and carry around. Given these factors, the Asus Zenfone 9 offers significantly better value for money for anyone who values performance, features, and a premium user 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.

Key Strengths:

  • Mobile technology analysis
  • Digital media communication
  • Technical storytelling
  • User-centric technology insights

Bridging technical complexity with engaging, accessible narratives.