Asus Zenfone 9 vs Xiaomi Redmi 12 - Detailed Phone Comparison

Detailed Comparison

Specification

General

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

Physical

Volume 90.79 cm³ 105.49 cm³
Screen Size to Weight Ratio 3.49 "/g 3.42 "/g
Weight 169 g 198.5 g
Height 146.5 mm 168.6 mm
Width 68.1 mm 76.3 mm
Thickness 9.1 mm 8.2 mm
Foldable Design No No
Available Colors
  • Midnight Black
  • Starry Blue
  • Moonlight White
  • Sunset Red
  • Midnight Black
  • Polar Silver
  • Sky Blue
  • Moonstone Silver

Display

Screen Size 5.9 " 6.79 "
Resolution 1080 x 2400 1080 x 2460
Aspect Ratio 20:9 21:9
Screen-to-Body Ratio 84.2 % 85.1 %
Pixel Density 445 PPI 396 PPI
Refresh Rate 120 Hz 90 Hz
Typical Brightness N/A N/A
HBM Brightness N/A N/A
Peak Brightness 1100 nits 550 nits

Hardware

Battery Capacity per Screen Area 123.53 mAh/in² 108.45 mAh/in²
Battery Density 47.36 mAh/cm³ 47.4 mAh/cm³
Battery Capacity 4300 mAh 5000 mAh
NFC Support Yes Yes
Chipset Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm) Mediatek MT6769H Helio G88 (12 nm)
CPU Octa-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510) Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
GPU Adreno 730 Mali-G52 MC2

Connectivity

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

Software

Operating System Android Android
Initial OS Version 12 13
Maximum OS Version 14 14

Comparison Summary

Okay, let's dive deep into this head-to-head between the Asus Zenfone 9 and the Xiaomi Redmi 12. It's a classic David vs. Goliath showdown, with the Zenfone 9 packing a serious punch into a compact frame, while the Redmi 12 goes for a bigger, more affordable approach. Here's how they stack up, from a tech enthusiast's perspective, but always with an eye on real-world usage.

1. Specifications Breakdown

First, let's get into the nitty-gritty with a detailed comparison table. I’ve focused on breaking down what the numbers mean for you, the user.

FeatureAsus Zenfone 9Xiaomi Redmi 12Real-World Implications
Design
Size146.5 x 68.1 x 9.1 mm168.6 x 76.3 x 8.2 mmZenfone 9 is significantly more compact and pocketable; Redmi 12 is larger, potentially harder to use one-handed.
Weight169g198.5gZenfone 9 is lighter, better for extended use without fatigue.
BuildGorilla Glass Victus (screen)Unknown (screen)Zenfone 9 has significantly better screen protection against scratches and cracks
Display
Size5.9"6.79"Redmi 12 offers a much larger screen for immersive viewing, while Zenfone 9 is more comfortable in smaller hands.
Resolution1080x24001080x2460Similar sharpness, though Zenfone 9 is slightly denser due to smaller screen size.
TechnologyAMOLEDIPS LCDZenfone 9 has superior color, contrast, and power efficiency, especially for dark mode.
Refresh Rate120Hz90HzZenfone 9 offers smoother scrolling and animations; a subtle but noticeable upgrade.
Brightness1100 nits0 nitsZenfone 9 is drastically better for outdoor visibility in bright sunlight.
Performance
ChipsetSnapdragon 8+ Gen 1 (4nm)Helio G88 (12nm)Zenfone 9 is significantly faster for gaming, demanding apps, and general responsiveness.
AnTuTu Score1,232,500249,400Zenfone 9 offers much faster app loading, smoother multitasking and is more future-proof
GPUAdreno 730Mali-G52 MC2Zenfone 9 has much better graphics performance, especially for gaming.
Camera
Main Camera50MP (1/1.56" Sony IMX766)50MP (1/2.76" Samsung S5KJN1)Zenfone 9's larger sensor should capture more light, resulting in better low-light photos.
Selfie Camera12MP (1/2.93" Sony IMX663)8MPZenfone 9 has higher resolution, which is better for capturing detailed selfies.
Wide Angle Lens12MP (1/2.55")8MP (1/2.8")Zenfone 9 offers a wider angle lens with a higher resolution for more versatile photography
Macro LensN/A2MPXiaomi Redmi 12 offers a dedicated macro lens for close-up photography
Video Recording8K@24fps, 4K@120fps, 1080p@240fps1080p@30fpsZenfone 9 offers dramatically higher video capabilities for serious content creators.
Camera FeaturesOIS, Gimbal, RAW, 8KHDR, RAWZenfone 9 provides superior image stabilization and editing flexibility.
Battery Life
Capacity4300 mAh5000 mAhRedmi 12 likely offers longer battery life due to larger capacity, but this can be influenced by usage.
Charging30W Fast Charging18W Fast ChargingZenfone 9 charges faster, reducing time spent plugged into the wall.
Reverse ChargingNo9W Reverse ChargingXiaomi Redmi 12 has a unique functionality which allows it to charge other devices wirelessly.
Software
OS VersionAndroid 12Android 13Redmi 12 comes with a newer OS out of the box, but both should be upgradeable to Android 14
Connectivity
WiFiWiFi 6 (802.11ax)802.11acZenfone 9 has a more advanced WiFi standard for faster speeds and less congestion.
Bluetooth5.25.3Redmi 12 has a newer bluetooth version.
GPSGPS (L1+L5), GLONASS (L1), BeiDou (B1) Galileo (E1+E5a), QZSSGPS, A-GPS, GLONASS, Beidou, GalileoZenfone 9 offers dual-band GPS and more satellite support for better accuracy, especially in urban environments.
Storage and RAM
Internal Storage128 GB or 256 GB128 GB or 256 GBBoth phones offer the same maximum internal storage capacity with two different variants for each device.
RAM8 GB or 16 GB4 GB or 6 GB or 8 GBZenfone 9 offers more RAM, better for heavy multitasking
Expandable StorageNoNoNeither device supports expandable storage.
Other
Audio QualityHi-Res Audio, Noise cancellation mic, Stereo SpeakersBasic audio featuresZenfone 9 has superior audio with Hi-Res playback, noise canceling and stereo speakers for a better experience.
Security FeaturesSide-mounted FingerprintSide-mounted FingerprintBoth phones provide similar basic biometric security using a fingerprint sensor.
SensorsProximity, Gravity, HallUltrasonic Proximity virtualBoth phones have a comprehensive sensor suite suited for advanced features and gaming

2. Key Insights

Asus Zenfone 9:

  • Pocket Rocket Performance: This phone is all about power and efficiency. The Snapdragon 8+ Gen 1 chipset is a beast, making it ideal for gaming and heavy tasks.
  • Premium Display: The AMOLED display is a joy to use, with vibrant colors, deep blacks, and a smooth 120Hz refresh rate. The high brightness makes it useable even in harsh sunlight.
  • High-End Camera: The combination of a large sensor, OIS, and impressive video capabilities places it firmly in the "photographer's phone" category.
  • Compact Design: This phone is incredibly ergonomic and easy to handle, a welcome relief in a world of ever-growing phones.
  • Superior Audio: The inclusion of stereo speakers, Hi-Res audio and noise cancellation makes it a good choice for media consumption.
  • Limitations: Smaller screen might be a drawback for some, and battery life, while good, isn't as substantial as the Redmi 12. Also, the lack of a wide angle lens is a bit of a downside.

Xiaomi Redmi 12:

  • Affordable Big Screen: The Redmi 12’s main appeal is its large display, making it great for media consumption and anyone who prefers a bigger phone.
  • Decent Battery: The 5000 mAh battery will easily last through a day of average use, if not more. It also boasts the added function of reverse charging.
  • Competent Camera: While not top-tier, the Redmi 12's camera is perfectly adequate for everyday photography and social media sharing, and offers a wide angle and macro lens for added versatility.
  • Practical Functionality: It has most of the connectivity features people need, albeit slightly older versions, and the 18W fast charge is useful.
  • Limitations: The Helio G88 chipset is a mid-range performer at best and is significantly less powerful than what the Zenfone 9 offers, resulting in slower app loading times. The display is an LCD panel, meaning you won't get the same vibrancy and deep blacks that you would on an AMOLED. Its size and weight may be a drawback for some, and the lower display brightness can be a challenge in bright sunlight.

3. User Profiles and Recommendations

Asus Zenfone 9 is best for:

  • Power Users: Those who need top-tier performance for gaming, video editing, and multitasking.
  • Photography Enthusiasts: Users who want a versatile camera with advanced features and great image quality.
  • Compact Phone Lovers: People who value a small, ergonomic device that's easy to handle one handed.
  • Media Enthusiasts: Those who want an immersive experience with good audio playback and good video quality.

Xiaomi Redmi 12 is best for:

  • Budget-Conscious Buyers: Users who prioritize affordability and a large screen over top-tier performance.
  • Casual Users: People who use their phone for social media, browsing, and basic tasks.
  • Media Consumers: Users who watch a lot of video and need a large display.
  • Those Seeking Long Battery Life: People who require a long lasting phone and don't mind its larger size.

4. Buying Decision Framework

Here are three questions to help you decide:

  1. Do you prioritize performance or screen size? The Zenfone 9 is a performance beast in a smaller package, while the Redmi 12 excels at providing a large screen at a low price point.
  2. How much importance do you place on camera capabilities? If photography is a major consideration, the Zenfone 9's camera is clearly superior. However, if you just need a decent shooter for social media, the Redmi 12 is more than capable.
  3. How much are you willing to spend? There will be a significant price difference between these two phones, so this may well be the deciding factor.

Scenario-Based Recommendations:

  • The Gamer: Go for the Zenfone 9. Its top-tier performance and smooth display will give you the edge in most games.
  • The Budget Shopper: The Redmi 12 is the more affordable option and a good choice for everyday needs.
  • The On-the-Go Photographer: The Zenfone 9’s advanced camera features and stabilisation capabilities are a better fit for serious photography.
  • The Media Lover: The Redmi 12 offers a larger screen at a lower price point, but the Zenfone 9 has better audio, video and display quality in general.

My Choice

If I were choosing between these two, I'd pick the Asus Zenfone 9. Here’s why: As a tech journalist and someone who spends a lot of time on my phone, the superior performance, camera, and display of the Zenfone 9 make a big difference in my day-to-day experience. I appreciate the smaller size and I find myself doing a lot of camera and video work, where the additional capabilities would be invaluable. While the Redmi 12 offers good value, the Zenfone 9's advantages justify its higher price for my specific use case.

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.