Asus Zenfone 9 vs Apple iPhone 15 Plus - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date September 15, 2022 September 22, 2023
Release Year 2022 2023

Physical

Volume 90.79 cm³ 97.64 cm³
Screen Size to Weight Ratio 3.49 "/g 3.33 "/g
Weight 169 g 201 g
Height 146.5 mm 160.9 mm
Width 68.1 mm 77.8 mm
Thickness 9.1 mm 7.8 mm
Foldable Design No No
Available Colors
  • Midnight Black
  • Starry Blue
  • Moonlight White
  • Sunset Red
  • Black
  • Yellow
  • Blue
  • Green
  • Pink

Display

Screen Size 5.9 " 6.7 "
Resolution 1080 x 2400 1290 x 2796
Aspect Ratio 20:9 19.5:9
Screen-to-Body Ratio 84.2 % 88 %
Pixel Density 445 PPI 460 PPI
Refresh Rate 120 Hz N/A
Typical Brightness N/A N/A
HBM Brightness N/A 1000 nits
Peak Brightness 1100 nits 2000 nits

Hardware

Battery Capacity per Screen Area 123.53 mAh/in² 97.64 mAh/in²
Battery Density 47.36 mAh/cm³ 44.89 mAh/cm³
Battery Capacity 4300 mAh 4383 mAh
NFC Support Yes Yes
Chipset Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm) Apple A16 Bionic (4 nm)
CPU Octa-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510) Hexa-core (2x3.46 GHz Everest + 4x2.02 GHz Sawtooth)
GPU Adreno 730 Apple GPU (5-core graphics)

Connectivity

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

Software

Operating System Android iOS
Initial OS Version 12 17
Maximum OS Version 14 18

Comparison Summary

Okay, let's dive into a head-to-head comparison of the Asus Zenfone 9 and the Apple iPhone 15 Plus. This isn't just about numbers; it’s about how these phones fit into our lives. I'll break down the specs, highlight the real-world implications, and offer some guidance to help you figure out which one might be right for you.

1. Specifications Breakdown

Here's a detailed look at the specifications, with a focus on what they actually mean for you, the user:

FeatureAsus Zenfone 9Apple iPhone 15 PlusReal-World Implications
Design
Dimensions146.5 × 68.1 × 9.1 mm160.9 × 77.8 × 7.8 mmZenfone 9 is significantly more compact and pocketable; iPhone 15 Plus offers a larger, more immersive display but is bulkier.
Weight169g201gZenfone 9 is noticeably lighter, better for one-handed use and prolonged holding.
Foldable TypeStandardStandardBoth are standard smartphone form factors.
Display
Size5.9"6.7"iPhone 15 Plus has a considerably larger screen, great for media consumption; Zenfone 9 is better for those who prefer a smaller phone.
Resolution1080x24001290x2796iPhone 15 Plus offers sharper images due to higher pixel density and resolution.
Pixel Density (PPI)445460Both offer crisp displays, with the iPhone 15 Plus having a slight edge in sharpness.
TechnologyAMOLEDOLEDBoth use quality display technologies, with vibrant colors and deep blacks.
Refresh Rate120Hz60HzZenfone 9 offers smoother animations and scrolling, which is especially noticeable for gaming or browsing.
Brightness1100 nits2000 nitsiPhone 15 Plus is significantly brighter outdoors, more usable under sunlight.
Performance
ChipsetSnapdragon 8+ Gen 1Apple A16 BionicDifferent processors, the iPhone's A16 usually edges slightly ahead in performance and efficiency while Android devices have more flexibility.
Antutu Score1,232,5001,470,000iPhone 15 Plus has better overall benchmark performance; both are incredibly fast in daily use.
GPUAdreno 730Apple GPU (5-core)Different graphics processors, both capable of handling heavy gaming and graphics-intensive tasks.
Battery Life
Capacity4300mAh4383mAhBoth offer similar battery capacity, expect comparable battery life throughout the day.
Charging30W Fast Charging20W Fast ChargingZenfone 9 charges faster, meaning less time plugged in.
Wireless ChargingNo15W MagSafe, 7.5W QiiPhone 15 Plus supports wireless charging, a convenience feature missing on the Zenfone 9.
Camera
Main Camera Res.50MP48MPSimilar high-resolution sensors for detailed images.
Main Camera Aperturef/1.8f/1.6iPhone 15 Plus has a wider aperture, good for better low-light performance.
Main Camera Sensor1/1.56" Sony IMX7661/1.5" Sony iPhone 15 SensorSimilar sensor sizes, indicating good overall image quality from both.
Selfie Camera Resolution12MP12MPSimilar selfie camera resolution.
Selfie Camera Aperturef/2.45f/1.9iPhone 15 Plus has a slightly wider aperture in its front-facing camera, useful for selfies in lower light.
Wide Camera Resolution12MP12MPBoth offer ultrawide cameras with similar resolution.
Wide Camera Aperturef/2.2f/2.4Zenfone 9 has a wider aperture in its ultrawide camera
Video RecordingUp to 8K@24fpsUp to 4K@60fpsZenfone 9 offers higher video resolution if needed for professional-grade content.
Video FeaturesGimbal Stabilization, EISOIS, Ultra stable videoBoth offer stabilization, but different approaches. iPhone's OIS is very effective, the Zenfone's gimbal is unique.
DxoMarkNot Tested145 (Mobile), 147 (Photo), 153 (Video)iPhone 15 Plus has a very good DxoMark rating, indicates good camera performance.
Software
Operating SystemAndroid 12 (upgradable to 14)iOS 17 (upgradable to 18)Different OS ecosystems: Android provides customization, while iOS is known for simplicity and security.
Connectivity
WiFiWiFi 6WiFi 6Both support the latest Wi-Fi standards for fast connectivity.
Bluetooth5.25.3iPhone 15 Plus has a newer version of Bluetooth.
GPSGPS (L1+L5), GLONASS (L1), BeiDou, Galileo, etc.GPS, A-GPS, GLONASS, QZSS, GalileoZenfone 9 supports more satellite systems for better location accuracy.
SIMDual Nano SIMDual Nano SIM + eSIMiPhone 15 Plus supports eSIM, useful for switching carriers digitally.
Storage
Internal Storage128/256GB128/256/512GBiPhone 15 Plus offers a 512 GB storage option, ideal for those who need a lot of storage.
RAM8/16GB6GBZenfone 9 can have significantly more RAM, for better multitasking.
Expandable StorageNoNoNeither phone supports expandable storage, a common trend.
Audio
Audio QualityHi-Res AudioStereo Speakers, Noise cancellation micZenfone 9 has better audio playback quality.
Security
Security FeaturesSide-mounted fingerprint sensorFace Unlock, Basic security featuresZenfone 9 has a fingerprint sensor, convenient for fast unlocks.
Build Quality
Screen ProtectionCorning Gorilla Glass VictusUnknownZenfone 9 uses superior scratch protection.
Sensors
SensorsFingerprint, Proximity, Accelerometer, Compass, GyroscopeProximity, Accelerometer, Compass, Gyroscope, BarometeriPhone 15 Plus has an additional barometer sensor, useful for altitude tracking.

2. Key Insights

Asus Zenfone 9 Strengths:

  • Compact Powerhouse: Its small size and light weight make it incredibly easy to handle and use one-handed, a rarity in today's market.
  • Smooth Display: The 120Hz refresh rate provides a fluid visual experience, excellent for gaming and smooth animations.
  • Faster Charging: 30W fast charging is a nice perk to get you up and running quickly.
  • Versatile Camera Features: The inclusion of a gimbal, especially for the small form factor is unique, along with 8K video support, will be great for advanced content creation.
  • Hi-Res Audio: Excellent for audiophiles that appreciate great playback.

Apple iPhone 15 Plus Strengths:

  • Immersive Display: The larger screen is ideal for watching videos, browsing, and gaming.
  • Brighter Screen: The superior brightness makes it more usable outdoors, especially in bright sunlight.
  • Better Benchmark Performance: A16 Bionic is more powerful in performance.
  • Wireless Charging: The convenience of MagSafe and Qi wireless charging.
  • Camera Excellence: The DxoMark scores and real-world tests point to reliable, consistent performance, excelling in low-light photography and videos with stabilization and cinematic mode.
  • eSIM Support: Greater flexibility for switching between carriers and using multiple lines.

Trade-offs:

  • Zenfone 9: Compromises on screen size and outdoor visibility for better portability. Lack of wireless charging and a slightly lower benchmark score could be a disadvantage.
  • iPhone 15 Plus: Larger size might not suit everyone, especially those with smaller hands or preference for smaller phones. Less smooth animations due to the 60Hz display refresh rate may make it feel less responsive to some users.

3. User Profiles and Recommendations

Asus Zenfone 9 is ideal for:

  • One-Handed Users: Those who prioritize compactness and ease of handling.
  • Gamers: The 120Hz display and powerful Snapdragon chipset offer great performance for mobile gaming.
  • Multimedia Consumers: Those who want smooth animations and high quality audio playback.
  • Content Creators: Those that prioritize advanced video features and portability.
  • Budget-Conscious Tech Lovers: Those seeking a smaller more affordable powerhouse.

Apple iPhone 15 Plus is ideal for:

  • Media Enthusiasts: Those who prioritize a large, vibrant display for watching videos and browsing.
  • Outdoor Users: Those who often use their phone in bright sunlight.
  • Photography Lovers: Those who value a reliable, high-performing camera system.
  • Ecosystem Users: Those already invested in the Apple ecosystem who want seamless integration.
  • Users that want high-performance and long-lasting devices: The A16 Bionic chip and optimizations will likely provide long-lasting performance.

4. Buying Decision Framework

Here are three questions to help you decide:

  1. What's your ideal phone size?

    • Small and Compact? Zenfone 9.
    • Large and Immersive? iPhone 15 Plus.
  2. Do you prioritize display smoothness or brightness?

    • Smooth Animations? Zenfone 9 (120Hz).
    • Outdoor Visibility? iPhone 15 Plus (brighter screen).
  3. Which ecosystem are you most invested in, Android or iOS?

    • Android: Zenfone 9, if you prefer its flexibility and customization.
    • iOS: iPhone 15 Plus, if you prefer Apple's software and seamless integration.

Scenario-Based Recommendations:

  • The Minimalist: You want a small, powerful phone that fits easily in your pocket and is easy to use one-handed. Recommendation: Asus Zenfone 9.
  • The Media Lover: You consume a lot of video content and want the best possible viewing experience. Recommendation: Apple iPhone 15 Plus.
  • The Prosumer: You value performance, camera and video quality, and often use your phone for creation. Recommendation: Leaning towards the Apple iPhone 15 Plus. However, if you prioritize advanced features like 8K video and gimbal stabilization then the Zenfone 9 is still a good option.
  • The Hybrid User: You use your phone for a mix of daily tasks and occasional heavy usage, also values having a fingerprint sensor. Recommendation: Asus Zenfone 9, with its blend of performance and useful features.

My Choice

If I were to choose between these two, I'd lean towards the Asus Zenfone 9. As someone who appreciates the convenience of a compact device, its smaller size and lighter weight is a significant advantage. While I do appreciate the benefits of the iPhone 15 Plus's superior screen brightness, I value the Zenfone 9's smoother 120Hz display and versatile camera capabilities (including gimbal stabilization) more for my day-to-day use. I also find the side-mounted fingerprint sensor preferable and it being an Android device, the flexibility it allows. This, in combination with its Hi-Res Audio and faster charging speed, will ensure an enhanced and enjoyable experience that suits my needs.

While the iPhone 15 Plus is a very solid smartphone and a good choice for the right kind of user, the Zenfone 9’s unique value proposition is hard to ignore for someone like me.

Alex Griffin
Alex Griffin

Technology analyst specializing in mobile devices and consumer electronics.

Core Expertise

  • Mobile technology analysis
  • Consumer electronics evaluation
  • Technical specification interpretation
  • User experience insights

Professional Mission Empowering readers to make informed technology decisions by transforming intricate specifications into understandable, practical guidance.

Demystifying technology, one device at a time.