Samsung Galaxy S21 5G vs Xiaomi Poco M6 4G - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 June 13, 2024
Release Year 2021 2024

Physical

Volume 85.33 cm³ 106.77 cm³
Screen Size to Weight Ratio 3.67 "/g 3.31 "/g
Weight 169 g 205 g
Height 151.7 mm 168.6 mm
Width 71.2 mm 76.3 mm
Thickness 7.9 mm 8.3 mm
Foldable Design No No
Available Colors
  • Phantom White
  • Phantom Gray
  • Phantom Violet
  • Phantom Pink
  • Silver
  • Black
  • Purple

Display

Screen Size 6.2 " 6.79 "
Resolution 1080 x 2400 1080 x 2460
Aspect Ratio 20:9 21:9
Screen-to-Body Ratio 85.9 % 85.1 %
Pixel Density 421 PPI 396 PPI
Refresh Rate 120 Hz 90 Hz
Typical Brightness N/A N/A
HBM Brightness N/A 550 nits
Peak Brightness 1300 nits N/A

Hardware

Battery Capacity per Screen Area 104.06 mAh/in² 109.10 mAh/in²
Battery Density 46.88 mAh/cm³ 47.11 mAh/cm³
Battery Capacity 4000 mAh 5030 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Mediatek Helio G91 Ultra (12 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
GPU Mali-G78 MP14 - International Mali-G52 MC2

Connectivity

USB Version 3.2 N/A
OTG Support 1
DisplayPort
DisplayPort Version N/A N/A
USB Features USB Type-C 3.2, OTG USB Type-C

Software

Operating System Android Android
Initial OS Version 11 14
Maximum OS Version 15

Comparison Summary

1. Specifications Comparison

Here's a detailed comparison of the Samsung Galaxy S21 5G and Xiaomi Poco M6 4G, focusing on the practical implications of their specifications:

Design

FeatureSamsung Galaxy S21 5GXiaomi Poco M6 4GPractical Impact
Dimensions151.7 × 71.2 × 7.9 mm168.6 × 76.3 × 8.3 mmPoco M6 is noticeably larger; S21 is more compact and pocketable.
Weight169g205gS21 is significantly lighter, more comfortable for one-handed use and extended periods.
Build MaterialNot specified (Likely glass and metal)Not specifiedUnknown build differences, but likely different.

Display

FeatureSamsung Galaxy S21 5GXiaomi Poco M6 4GPractical Impact
Size6.2"6.79"Poco M6 provides a larger screen for media consumption and gaming. S21 is more compact and easy to handle.
Resolution1080x24001080x2460Both displays are sharp; slight difference is negligible in real-world use.
Pixel Density (PPI)421396S21 has slightly sharper images. The difference is not very noticeable.
TechnologyAMOLEDIPS LCDS21 has richer colors, deeper blacks, and better viewing angles. Superior for visual media.
Refresh Rate120Hz90HzS21 offers smoother scrolling and animations.
Brightness1300 nits0 nitsS21 is much better visible under bright sunlight. The Poco M6's brightness is unknown making it hard to assess.

Performance

FeatureSamsung Galaxy S21 5GXiaomi Poco M6 4GPractical Impact
ChipsetExynos 2100 (5 nm)Mediatek Helio G91 Ultra (12 nm)S21 offers significantly faster processing and better overall performance.
AnTuTu Score749,100269,266S21 is much faster, better for demanding games and multitasking.
GPUMali-G78 MP14Mali-G52 MC2S21 offers superior graphics performance.

Camera

FeatureSamsung Galaxy S21 5GXiaomi Poco M6 4GPractical Impact
Main Camera12MP f/1.8108MP f/1.75Poco M6 captures higher resolution images, with slightly wider aperture. S21 is likely to perform better in low light due to sensor size and optimization.
Telephoto/Portrait64MP f/2.0NoneS21 offers better zooming capabilities and portrait effects
Selfie Camera10MP f/2.213MP f/2.45Poco M6 has higher resolution, but S21 has a wider aperture for better low-light performance.
Macro LensNone2MP f/2.4Poco M6 can take close-up shots of small objects.
Wide Angle12.2MP f/2.2NoneS21 provides a wider field of view.
VideoUp to 8K@24fpsUp to 1080p@30fpsS21 can record professional quality video.
DXOMarkMobile: 111, Selfie: 132Not testedS21 has a tested and better camera performance overall.

Battery

FeatureSamsung Galaxy S21 5GXiaomi Poco M6 4GPractical Impact
Capacity4000mAh5030mAhPoco M6 has a larger battery for longer usage, depending on screen brightness and tasks being performed.
Charging25W33WPoco M6 charges slightly faster
Features15W Wireless, 4.5W Reverse Wireless, no charger in boxNone wirelessS21 offers Wireless charging and reverse wireless charging; Poco M6 doesn't provide wireless charging.

2. Key Differences Analysis

Samsung Galaxy S21 5G Advantages:

  • Superior Display: AMOLED screen with 120Hz refresh rate and much higher peak brightness makes it significantly better for visual quality and outdoor visibility.
  • Higher Performance: The Exynos 2100 chipset offers significantly faster processing speeds and better graphics, which is crucial for demanding tasks and gaming.
  • Advanced Camera System: Features include a telephoto lens, higher resolution video recording (8K), and optical image stabilization (OIS). Better for capturing varied photo types and videos.
  • Wireless Charging and Reverse Wireless Charging: Adds convenience for charging and sharing battery with other devices.
  • More Comprehensive Sensor Suite: Provides a wider array of sensors for advanced functionality and better accuracy.
  • Better Audio quality: Better speakers, dolby atmos and noise canceling microphone gives an edge.
  • Better build quality: Corning Gorilla Glass Victus offers superior screen protection

Practical Implications: The S21 is a high-performance device with a superior display and camera system, better suited for media consumption, mobile gaming and photography. The lack of charger in box is something to consider.

Xiaomi Poco M6 4G Advantages:

  • Larger Battery: 5030mAh battery will potentially provide significantly longer battery life.
  • Faster Charging: 33W fast charging allows for quick power-ups.
  • Macro lens: Enables detailed close up shots of small objects
  • Newer Bluetooth: Bluetooth 5.4 is an improvement to the 5.0 in S21.
  • Newer OS: Android 14 vs Android 11 at release is a major upgrade.

Practical Implications: The Poco M6 is ideal for users who prioritize battery life and fast charging at a lower cost with a big display, and dont need the advanced features.

Trade-offs:

  • The S21 trades battery life and slightly faster charging speed for better display, performance, and camera.
  • The Poco M6 sacrifices display quality, processing power and camera performance for a larger battery and more affordable price.

3. User Profiles & Recommendations

Ideal Users for Samsung Galaxy S21 5G:

  • Power Users: Individuals who need top-tier performance for gaming, video editing, and multitasking.
  • Media Enthusiasts: Those who prioritize excellent display quality for movies and content creation.
  • Photography Lovers: Users who want versatile cameras with optical zoom, 8K video recording, and OIS.
  • Tech Enthusiasts: Those who appreciate advanced features and a premium build quality.

Use Cases for Samsung Galaxy S21 5G:

  • Playing graphics-intensive mobile games.
  • Capturing high-quality photos and videos for social media or professional purposes.
  • Enjoying high-definition movies and TV shows with vibrant colors.
  • Working with demanding apps and multitasking with ease.

Ideal Users for Xiaomi Poco M6 4G:

  • Budget-Conscious Consumers: People seeking a large screen and decent performance at a lower price.
  • Heavy Users of Battery: Users who need a long battery life to last throughout the day.
  • Casual Photographers: Those who need to capture occasional pictures.
  • Media Consumers: Users who want a large screen for watching content, and dont mind the inferior screen technology.

Use Cases for Xiaomi Poco M6 4G:

  • Daily communication, browsing, and social media.
  • Watching videos and movies for extended periods.
  • Playing casual games and basic applications.
  • Capturing macro photos and good daylight photos.
  • Long periods away from a charger.

4. Decision Framework

Key Questions for Buyers:

  1. What is my main priority - display quality or battery life?

    • If display quality is more important, choose the S21.
    • If battery life is most important, choose the Poco M6.
  2. How demanding are my typical use cases?

    • For heavy gaming and demanding apps, choose the S21.
    • For daily tasks and media consumption, the Poco M6 is adequate.
  3. What is my budget?

    • If you are willing to invest in high-end features and performance, choose the S21.
    • If price is a significant concern, choose the Poco M6

Scenario-Based Recommendations:

  • Scenario 1: Mobile Gamer: Choose the Samsung Galaxy S21 5G for its superior processing power, better GPU, and smoother display.
  • Scenario 2: Traveler Needing Long Battery: Choose the Xiaomi Poco M6 4G for its larger battery and fast charging.
  • Scenario 3: Casual User on a Budget: Choose the Xiaomi Poco M6 4G for its affordability and large screen.
  • Scenario 4: Content Creator: Choose the Samsung Galaxy S21 5G for its better camera system with 8K video recording, stabilization and editing capabilities.

My Choice

I would choose the Samsung Galaxy S21 5G. While the Xiaomi Poco M6 4G offers a larger battery and slightly faster charging, the S21 provides a much superior overall experience. The AMOLED display with a 120Hz refresh rate and high brightness is significantly better for media consumption. The Exynos 2100 chipset offers much better performance, and the advanced camera system is far more versatile. Although the lack of a charger in the box and smaller battery are drawbacks, the improvements in display, performance, and camera capabilities outweigh these for my personal usage patterns. I value the ability to have a premium visual and performance experience, while also having a more capable camera system, and these needs are better met with the S21.

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.

Key Strengths:

  • Mobile technology analysis
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Bridging technical complexity with engaging, accessible narratives.