Xiaomi Redmi 12 vs Samsung Galaxy A55 - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date June 15, 2023 March 15, 2024
Release Year 2023 2024

Physical

Volume 105.49 cm³ 102.25 cm³
Screen Size to Weight Ratio 3.42 "/g 3.1 "/g
Weight 198.5 g 213 g
Height 168.6 mm 161.1 mm
Width 76.3 mm 77.4 mm
Thickness 8.2 mm 8.2 mm
Foldable Design No No
Available Colors
  • Midnight Black
  • Polar Silver
  • Sky Blue
  • Moonstone Silver
  • Navy
  • Iceblue
  • Lilac
  • Lemon

Display

Screen Size 6.79 " 6.6 "
Resolution 1080 x 2460 1080 x 2340
Aspect Ratio 21:9 19.5:9
Screen-to-Body Ratio 85.1 % 85.8 %
Pixel Density 396 PPI 390 PPI
Refresh Rate 90 Hz 120 Hz
Typical Brightness N/A N/A
HBM Brightness N/A 1000 nits
Peak Brightness 550 nits N/A

Hardware

Battery Capacity per Screen Area 108.45 mAh/in² 114.78 mAh/in²
Battery Density 47.4 mAh/cm³ 48.9 mAh/cm³
Battery Capacity 5000 mAh 5000 mAh
NFC Support Yes Yes
Chipset Mediatek MT6769H Helio G88 (12 nm) Exynos 1480 (4 nm)
CPU Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55) Octa-core (4x2.75 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
GPU Mali-G52 MC2 Xclipse 530

Connectivity

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

Software

Operating System Android Android
Initial OS Version 13 14
Maximum OS Version 14 18

Comparison Summary

1. Specifications Comparison

FeatureXiaomi Redmi 12Samsung Galaxy A55Practical Impact
Design
Dimensions (mm)168.6 x 76.3 x 8.2161.1 x 77.4 x 8.2Redmi 12 is taller and slightly narrower. Negligible difference in thickness.
Weight (g)198.5213Redmi 12 is noticeably lighter, improving one-handed use.
Fingerprint SensorSide-mountedUnder-displayPersonal preference; under-display is often considered more modern.
Display
Display TypeIPS LCDSuper AMOLEDAMOLED offers richer colors, deeper blacks, and better power efficiency in dark mode.
Display Size (inches)6.796.6Redmi 12 has a slightly larger display, offering more screen real estate.
Refresh Rate (Hz)90120A55's 120Hz display will feel smoother for scrolling and gaming.
Peak Brightness (nits)5501000 (HBM)A55 will be significantly more visible in direct sunlight.
HDRNoHDR10+A55 supports HDR content, resulting in better dynamic range and more vibrant visuals in compatible media.
Performance
ChipsetMediatek Helio G88 (12nm)Exynos 1480 (4nm)A55's 4nm Exynos chip offers significantly better performance and power efficiency.
CPUOcta-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)Octa-core (4x2.75 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)A55 has more powerful CPU cores (Cortex-A78 vs A75) leading to faster processing and multitasking.
GPUMali-G52 MC2Xclipse 530A55's GPU is more capable, providing smoother gaming and graphics performance.
RAM (GB)4/88/12More RAM in A55 (especially 12GB option) enables better multitasking and app performance.
OSAndroid 13Android 14A55 comes with a newer Android version and longer OS update support (up to Android 18).
Camera
Main Camera (MP)5050Similar resolution, but A55 has a larger sensor (1/1.56" vs 1/2.76") and OIS, enabling better low-light photography and video stabilization.
Ultrawide (MP)813A55 offers a higher resolution ultrawide camera.
Selfie Camera (MP)832A55 boasts a significantly higher resolution selfie camera.
Video Recording1080p@30fps4K@30fpsA55 can record in higher resolution (4K). EIS is available on both, but A55 might offer better stabilization due to OIS.
Battery
Capacity (mAh)50005000Similar battery capacity. However, A55's more efficient processor and AMOLED display likely result in better battery life.

2. Key Differences Analysis

Xiaomi Redmi 12 Advantages:

  • Lower Price: Significantly more affordable.
  • Lighter Weight: More comfortable for extended use.
  • Slightly Larger Display: More screen real estate for media consumption.

Samsung Galaxy A55 Advantages:

  • Superior Performance: Much faster and more responsive due to a more powerful chipset and more RAM.
  • Better Display: AMOLED technology delivers richer colors, deeper blacks and higher brightness. Smoother 120Hz refresh rate.
  • Enhanced Camera System: Larger sensor, OIS, higher resolution ultrawide and selfie cameras, 4K video recording.
  • Longer Software Support: Will receive more OS and security updates.
  • 5G Connectivity: Offers faster cellular data speeds in areas with 5G coverage.

3. User Profiles & Recommendations

Xiaomi Redmi 12: Budget-conscious users who prioritize basic functionality, a large display, and all-day battery life. Suitable for light tasks like web browsing, social media, and casual gaming.

Samsung Galaxy A55: Users who value performance, a high-quality display, a versatile camera system, and longer software support. Ideal for demanding tasks, mobile gaming, photography enthusiasts, and those who want a future-proof device.

4. Decision Framework

Key Questions for Buyers:

  1. What is your budget? Redmi 12 offers excellent value for its price, while A55 commands a premium.
  2. What are your primary use cases? For basic tasks, Redmi 12 suffices. For demanding tasks and gaming, A55 is necessary.
  3. How important are camera quality and display quality to you? A55 significantly outperforms Redmi 12 in these areas.

My Choice: Samsung Galaxy A55

While the Redmi 12 offers impressive value for its price, the Samsung Galaxy A55 is the superior device overall. The performance difference is substantial, and the A55's AMOLED display, better camera system, longer software support, and 5G connectivity make it a much more compelling choice for a long-term investment. The price difference is justified by the significant upgrades in key areas that impact daily use. The smoother 120Hz refresh rate and brighter display further enhance the user experience. While I acknowledge the Redmi 12's affordability, I prioritize performance, camera quality, and display quality in a smartphone, making the A55 the clear winner for me.

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.