Xiaomi Redmi 12 5G vs Xiaomi Redmi A3x - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date August 4, 2023 May 24, 2024
Release Year 2023 2024

Physical

Volume 105.49 cm³ 106.65 cm³
Screen Size to Weight Ratio 3.41 "/g 3.48 "/g
Weight 199 g 193 g
Height 168.6 mm 168.4 mm
Width 76.3 mm 76.3 mm
Thickness 8.2 mm 8.3 mm
Foldable Design No No
Available Colors
  • Moonstone Silver
  • Jade Black
  • Pastel Blue
  • Midnight Black
  • Olive Green
  • Moonlight White (Starry White)
  • Aurora Green (Ocean Green)

Display

Screen Size 6.79 " 6.71 "
Resolution 1080 x 2460 720 x 1650
Aspect Ratio 21:9 21:9
Screen-to-Body Ratio 85.1 % 82.9 %
Pixel Density 396 PPI 268 PPI
Refresh Rate 90 Hz 90 Hz
Typical Brightness 550 nits 500 nits
HBM Brightness N/A N/A
Peak Brightness N/A N/A

Hardware

Battery Capacity per Screen Area 108.45 mAh/in² 111.05 mAh/in²
Battery Density 47.4 mAh/cm³ 46.88 mAh/cm³
Battery Capacity 5000 mAh 5000 mAh
NFC Support No No
Chipset Qualcomm SM4450 Snapdragon 4 Gen 2 (4 nm) Unisoc T603 (22 nm)
CPU Octa-core (2x2.2 GHz Cortex-A78 & 6x1.95 GHz Cortex-A55) Octa-core 1.8 GHz
GPU Adreno 613 8

Connectivity

USB Version N/A N/A
OTG Support
DisplayPort
DisplayPort Version N/A N/A
USB Features USB Type-C 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 12 5GXiaomi Redmi A3xPractical Impact
Design
Dimensions (mm)168.6 x 76.3 x 8.2168.4 x 76.3 x 8.3Virtually identical in size and feel.
Weight (g)199193Negligible weight difference in real-world usage.
Display
Size (inches)6.796.71Redmi 12 5G slightly larger, minimal difference in one-handed use.
TypeIPS LCD, 90HzIPS LCD, 90HzBoth offer smooth scrolling with the same refresh rate.
Resolution1080 x 2460720 x 1650Significantly sharper visuals and text on the Redmi 12 5G due to higher pixel density (396 vs 268 ppi).
Brightness (nits)550500Redmi 12 5G slightly brighter, potentially better outdoor visibility. However, without peak brightness values for both, a definitive comparison is impossible.
Performance
ChipsetQualcomm Snapdragon 4 Gen 2 (4 nm)Unisoc T603 (22 nm)Snapdragon 4 Gen 2 offers superior performance, efficiency, and newer technology compared to the Unisoc T603.
CPUOcta-core (2x2.2 GHz Cortex-A78 & 6x1.95 GHz Cortex-A55)Octa-core 1.8 GHzRedmi 12 5G boasts much faster and more powerful CPU cores, resulting in smoother multitasking and demanding app usage.
GPUAdreno 6138Adreno 613 significantly outperforms the unknown GPU in the A3x, providing a much better gaming and graphics-intensive application experience. Lack of specific GPU model for the A3x limits detailed comparison.
RAM6GB4GBRedmi 12 5G allows for smoother multitasking and app switching with more RAM.
Storage128GB128GBEqual storage capacity on both devices.
Battery
Capacity (mAh)50005000Identical battery capacity, but real-world battery life will depend on software optimization and chipset efficiency.
Software
OSAndroid 13Android 14Redmi A3x launches with a newer Android version, potentially offering newer features and longer software support. However, Redmi 12 5G is expected to receive the Android 14 update.
Other
NFCNoNoNeither phone supports contactless payments.
Price RangeMediumLowRedmi A3x is significantly cheaper.

2. Key Differences Analysis

Redmi 12 5G Advantages:

  • Significantly better performance: The Snapdragon 4 Gen 2 and Adreno 613 provide a much smoother and more responsive user experience, especially for gaming and multitasking.
  • Sharper Display: Higher resolution results in clearer text and images.
  • More RAM: Enables better multitasking and app performance.

Redmi A3x Advantages:

  • Lower Price: Significantly more affordable.
  • Newer Android Version: Ships with Android 14, potentially offering longer software support and newer features out-of-the-box.

3. User Profiles & Recommendations

Redmi 12 5G: Users who prioritize performance, a smoother user experience, and a sharper display, even at a higher cost. Suitable for gaming, multitasking, and media consumption.

Redmi A3x: Budget-conscious users who prioritize affordability over performance. Suitable for basic tasks like calling, texting, browsing, and social media.

4. Decision Framework

Key Questions:

  1. What is your budget? The Redmi A3x is a much more budget-friendly option.
  2. What is your primary smartphone usage? For demanding tasks, the Redmi 12 5G's superior performance is crucial. For basic usage, the Redmi A3x may suffice.
  3. How important is display quality? The Redmi 12 5G's sharper display is noticeable for media consumption and reading.

My Choice: Xiaomi Redmi 12 5G

While the Redmi A3x offers a tempting price point, the performance difference offered by the Redmi 12 5G is too significant to ignore. The Snapdragon 4 Gen 2, coupled with the Adreno 613 GPU and 6GB of RAM, will provide a noticeably smoother and more responsive experience, especially in the long run. The sharper display is also a major plus for me. I value a fluid user experience and am willing to pay the extra price for the Redmi 12 5G to ensure that. The slightly older Android version is not a major concern as it is expected to receive the Android 14 update. In the medium price range, the Redmi 12 5G offers much better value for its performance and display quality.

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.