Xiaomi Redmi Note 12 4G vs Xiaomi Redmi A3x - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date March 30, 2023 May 24, 2024
Release Year 2023 2024

Physical

Volume 99.49 cm³ 106.65 cm³
Screen Size to Weight Ratio 3.63 "/g 3.48 "/g
Weight 183.5 g 193 g
Height 165.7 mm 168.4 mm
Width 76 mm 76.3 mm
Thickness 7.9 mm 8.3 mm
Foldable Design No No
Available Colors
  • Ice Blue
  • Mint Green
  • Onyx Gray
  • Midnight Black
  • Olive Green
  • Moonlight White (Starry White)
  • Aurora Green (Ocean Green)

Display

Screen Size 6.67 " 6.71 "
Resolution 1080 x 2400 720 x 1650
Aspect Ratio 20:9 21:9
Screen-to-Body Ratio 85.3 % 82.9 %
Pixel Density 395 PPI 268 PPI
Refresh Rate 120 Hz 90 Hz
Typical Brightness 450 nits 500 nits
HBM Brightness 700 nits N/A
Peak Brightness 1200 nits N/A

Hardware

Battery Capacity per Screen Area 112.39 mAh/in² 111.05 mAh/in²
Battery Density 50.26 mAh/cm³ 46.88 mAh/cm³
Battery Capacity 5000 mAh 5000 mAh
NFC Support Yes No
Chipset Qualcomm SM6225 Snapdragon 685 (6 nm) Unisoc T603 (22 nm)
CPU Octa-core (4x2.8 GHz Cortex-A73 & 4x1.9 GHz Cortex-A53) Octa-core 1.8 GHz
GPU Adreno 610 8

Connectivity

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

Software

Operating System Android Android
Initial OS Version 13 14
Maximum OS Version 14 16

Comparison Summary

1. Specifications Comparison

FeatureXiaomi Redmi Note 12 4GXiaomi Redmi A3xPractical Impact
Design
Dimensions (mm)165.7 x 76 x 7.9168.4 x 76.3 x 8.3Redmi A3x slightly larger and thicker
Weight (g)183.5193Redmi A3x noticeably heavier
Build MaterialNot specifiedNot specifiedCannot compare build quality
Display
Display TypeAMOLED, 120HzIPS LCD, 90HzNote 12: Deeper blacks, vibrant colors, smoother scrolling; A3x: Potentially better visibility in direct sunlight
Resolution1080 x 2400720 x 1650Note 12: Sharper, more detailed visuals
Pixel Density (PPI)395268Note 12: Significantly sharper text and images
Peak Brightness (nits)1200Not specifiedNote 12: likely brighter, especially outdoors. Can't compare definitively due to missing A3x data.
Performance
ChipsetSnapdragon 685 (6nm)Unisoc T603 (22nm)Note 12: More powerful and power-efficient processor
CPUOcta-core (4x2.8 GHz Cortex-A73 & 4x1.9 GHz Cortex-A53)Octa-core 1.8 GHzNote 12: Significantly faster CPU performance for demanding tasks and multitasking
GPUAdreno 610Mali-G57 MP1Note 12: Better gaming and graphics performance
RAM4GB/6GB/8GB3GB/4GBNote 12: More RAM options for smoother multitasking
Camera
Main Camera50MP8MPNote 12: Much higher resolution, potentially better image quality
Secondary Cameras8MP Wide, 2MP Macro0.1MP (unknown purpose)Note 12: More versatile camera setup
Video Recording1080p@30fps1080p@30fpsSimilar video recording capabilities
Battery
Capacity5000 mAh5000 mAhSimilar battery capacity
Fast Charging33W10WNote 12: Significantly faster charging

2. Key Differences Analysis

Redmi Note 12 4G Advantages:

  • Superior Display: AMOLED with higher resolution, refresh rate, and peak brightness. Provides a significantly better viewing experience.
  • Significantly Better Performance: A more powerful and efficient chipset, faster CPU and GPU, and more RAM options, resulting in smoother multitasking, better gaming, and faster app loading.
  • Higher Resolution Camera: The 50MP main camera offers potentially better image quality and detail.
  • Faster Charging: 33W fast charging significantly reduces charging time.

Redmi A3x Advantages:

  • Lower Price: Positioned in the low price range, making it more budget-friendly.
  • Potentially Longer Software Support: Launched with a newer Android version and may receive updates for a longer period. However, Xiaomi's update track record is not always consistent.

3. User Profiles & Recommendations

Redmi Note 12 4G: Users who prioritize performance, display quality, and camera capabilities. Suitable for gaming, media consumption, and photography enthusiasts.

Redmi A3x: Users on a tight budget who prioritize basic functionality for calling, texting, and light internet browsing. Suitable for users who don't demand high performance or advanced features.

4. Decision Framework

Key Questions for Buyers:

  1. What is your budget? The Redmi A3x is significantly cheaper.
  2. What are your primary smartphone usage patterns? Gaming, media consumption, and photography benefit from the Note 12's superior hardware.
  3. How important is display quality and performance? The Note 12 offers a vastly improved visual and performance experience.

My Choice: Xiaomi Redmi Note 12 4G

While the Redmi A3x offers a lower price point, the Redmi Note 12 4G provides significantly better value for the moderate price increase. The superior AMOLED display, much faster performance thanks to the Snapdragon 685 and greater RAM, better camera system, and faster charging make it a much more compelling device for a wider range of users. The A3x makes compromises in too many key areas to recommend unless budget is extremely limited. Even then, exploring slightly older, used phones might offer a better overall experience than the A3x.

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.

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Bridging technical complexity with engaging, accessible narratives.