Samsung Galaxy Note20 5G vs Xiaomi Redmi A3 - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date August 21, 2020 February 23, 2024
Release Year 2020 2024

Physical

Volume 100.86 cm³ 106.58 cm³
Screen Size to Weight Ratio 3.49 "/g 3.48 "/g
Weight 192 g 193 g
Height 161.6 mm 168.3 mm
Width 75.2 mm 76.3 mm
Thickness 8.3 mm 8.3 mm
Foldable Design No No
Available Colors
  • Mystic Green
  • Mystic Bronze
  • Mystic Gray
  • Mystic Red
  • Mystic Blue
  • Midnight Black
  • Forest Green (Olive Green)
  • Star Blue (Lake Blue)

Display

Screen Size 6.7 " 6.71 "
Resolution 1080 x 2400 720 x 1650
Aspect Ratio 20:9 21:9
Screen-to-Body Ratio 89.2 % 82.9 %
Pixel Density 393 PPI 268 PPI
Refresh Rate N/A 90 Hz
Typical Brightness N/A N/A
HBM Brightness N/A 500 nits
Peak Brightness N/A N/A

Hardware

Battery Capacity per Screen Area 95.79 mAh/in² 111.05 mAh/in²
Battery Density 42.63 mAh/cm³ 46.91 mAh/cm³
Battery Capacity 4300 mAh 5000 mAh
NFC Support Yes Yes
Chipset Exynos 990 (7 nm+) - Global Mediatek Helio G36 (12 nm)
CPU Octa-core (2x2.73 GHz Mongoose M5 & 2x2.50 GHz Cortex-A76 & 4x2.0 GHz Cortex-A55) - Global Octa-core (4x2.2 GHz Cortex-A53 & 4x1.6 GHz Cortex-A53)
GPU Mali-G77 MP11 - Global PowerVR GE8320

Connectivity

USB Version 3.2 2.0
OTG Support 1
DisplayPort
DisplayPort Version N/A N/A
USB Features USB Type-C 3.2, OTG USB Type-C 2.0

Software

Operating System Android Android
Initial OS Version 10 14
Maximum OS Version 13

Comparison Summary

1. Specifications Comparison

Design

FeatureSamsung Galaxy Note20 5GXiaomi Redmi A3Practical Impact
Dimensions161.6 × 75.2 × 8.3 mm168.3 × 76.3 × 8.3 mmThe Redmi A3 is noticeably taller and slightly wider. The Note20 5G may be more comfortable for one-handed use for some.
Weight192g193gVirtually identical weight; negligible difference.
Build Quality (Screen)Corning Gorilla Glass 5Corning Gorilla Glass 3The Note20 5G offers better scratch resistance and durability for the display.

Display

FeatureSamsung Galaxy Note20 5GXiaomi Redmi A3Practical Impact
Size6.7"6.71"Almost identical display size.
Resolution1080x2400720x1650The Note20 5G has a much sharper and clearer display. Text and images will appear significantly more detailed.
PPI393268The Note20 5G has a noticeably sharper screen, resulting in a better visual experience.
TechnologyAMOLEDIPS LCDThe Note20 5G's AMOLED screen offers superior contrast, deeper blacks, more vibrant colors, and better power efficiency, especially with dark mode.
Refresh Rate60Hz90HzThe Redmi A3 will have smoother scrolling and animations, though the difference may not be significant for all users.

Performance

FeatureSamsung Galaxy Note20 5GXiaomi Redmi A3Practical Impact
ChipsetExynos 990 (7 nm+)Mediatek Helio G36 (12 nm)The Note20 5G offers significantly faster performance for demanding tasks like gaming, video editing, and multitasking.
AnTuTu Score515,090127,000The Note20 5G is much faster and more responsive in everyday use.
GPUMali-G77 MP11PowerVR GE8320The Note20 5G provides a significantly better gaming experience with higher frame rates and smoother graphics.
RAM8 GB3 GB / 4 GB / 6 GBThe Note20 5G will handle more apps running in the background smoothly.

Camera

FeatureSamsung Galaxy Note20 5GXiaomi Redmi A3Practical Impact
Main Camera12MP, f/1.88MP, f/2.0The Note20 5G will likely produce better quality photos, especially in low light, due to its wider aperture and larger sensor size.
Selfie Camera10MP, f/2.05MP, f/2.2The Note20 5G will take higher resolution and brighter selfies.
Telephoto Lens64MP, f/2.0NoneThe Note20 5G offers optical zoom capabilities, allowing for detailed photos at a distance.
Wide Angle Lens12MP, f/2.2NoneThe Note20 5G captures a wider field of view, useful for landscape photography or group shots.
Video RecordingUp to 8K@24fpsUp to 1080p@30fpsThe Note20 5G can record much higher resolution videos, suitable for professional use.
FeaturesOIS, EIS, 4K/8K Video, etc.Digital Zoom, HDR, etc.The Note20 5G offers advanced features like optical image stabilization, resulting in smoother videos and sharper images.

Battery

FeatureSamsung Galaxy Note20 5GXiaomi Redmi A3Practical Impact
Capacity4300mAh5000mAhThe Redmi A3 should offer longer battery life under similar usage scenarios.
Charging25W Fast Charging10W Fast ChargingThe Note20 5G charges significantly faster, reducing downtime.
FeaturesWireless Charging, Reverse ChargingNoneThe Note20 5G offers convenient wireless charging and the ability to charge other devices wirelessly.

Other

FeatureSamsung Galaxy Note20 5GXiaomi Redmi A3Practical Impact
SoftwareAndroid 10 (upgradable to 13)Android 14Redmi A3 has newer operating system.
Wi-FiWi-Fi 6Wi-Fi 5The Note20 5G supports faster and more efficient Wi-Fi connections.
SecurityFingerprint SensorSide-mounted Fingerprint SensorThe Redmi A3 has a more modern fingerprint sensor placement.

2. Key Differences Analysis

Samsung Galaxy Note20 5G Advantages:

  • Superior Display: AMOLED technology, higher resolution and pixel density provide a significantly better viewing experience.
  • Much Higher Performance: The Exynos 990 chipset offers far superior processing power for gaming, multitasking, and demanding applications.
  • Advanced Camera System: Features telephoto and ultrawide lenses, 8K video recording, OIS, and more advanced features for versatile photography and videography.
  • Faster Charging & Wireless Capabilities: Supports 25W fast charging, wireless charging, and reverse wireless charging for added convenience.
  • Better Build Quality: Corning Gorilla Glass 5 provides enhanced screen protection.
  • More RAM: Ensures smoother multitasking and overall system responsiveness.
  • Better Connectivity: Supports WiFi 6 and more GPS systems.

Practical Implications: The Note20 5G is a powerhouse for users who prioritize performance, camera quality, and display quality. It's ideal for demanding tasks, content creation, and multimedia consumption.

Xiaomi Redmi A3 Advantages:

  • Larger Battery: Offers longer battery life for users who prioritize endurance.
  • Newer Android Version: Comes with Android 14 out of the box, potentially offering more up-to-date features and security patches (though the Note20 5G has been updated).
  • Side-Mounted Fingerprint Sensor: More convenient and ergonomic fingerprint sensor placement for some users.
  • 90Hz Refresh Rate: Slightly smoother display experience.

Practical Implications: The Redmi A3 is a budget-friendly option for users who need a phone with long battery life and a modern Android version for basic tasks.

Significant Trade-offs:

  • Choosing the Redmi A3 means sacrificing performance, display quality, and camera capabilities for a lower price and longer battery life.
  • Choosing the Note20 5G means paying more for premium features and performance, but it's an older device.

3. User Profiles & Recommendations

Samsung Galaxy Note20 5G:

  • Ideal User: Power users, photographers, gamers, and anyone who values performance, display quality, and a versatile camera system.
  • Use Cases:
    • Mobile gaming with demanding graphics.
    • Capturing high-quality photos and videos in various scenarios.
    • Multitasking between multiple apps seamlessly.
    • Consuming multimedia content with vibrant colors and sharp details.

Xiaomi Redmi A3:

  • Ideal User: Budget-conscious users, students, or anyone who needs a reliable phone for basic tasks and long battery life.
  • Use Cases:
    • Basic communication (calls, messaging, social media).
    • Web browsing and email.
    • Media consumption (watching videos, listening to music) with acceptable quality.
    • Everyday tasks where battery life is crucial.

4. Decision Framework

Key Questions for Buyers:

  1. What is your budget? The price difference between these phones is significant.
  2. What are your primary use cases? Do you need a phone for demanding tasks, or just basic communication and media consumption?
  3. How important is battery life vs. performance and camera quality? Are you willing to sacrifice performance and camera features for longer battery life?

Scenario-Based Recommendations:

  • Scenario 1: Budget is tight, and battery life is paramount: Choose the Xiaomi Redmi A3.
  • Scenario 2: Budget is flexible, and you need a powerful phone for gaming, photography, and multimedia: Choose the Samsung Galaxy Note20 5G.
  • Scenario 3: You want a balance between price and performance, but battery life is still important: Consider other options in the mid-range category, as the Note20 5G is older.

What I Would Choose and Why

Given the choice between these two phones, I would choose the Samsung Galaxy Note20 5G.

Here's why:

  • Significantly Better Performance: As someone who uses their phone for a variety of tasks, including occasional gaming, photo editing, and video streaming, the superior performance of the Note20 5G is crucial. The Exynos 990 offers a much smoother and more responsive experience than the Helio G36.
  • Superior Display Quality: The AMOLED display with its higher resolution and pixel density makes a noticeable difference in everyday use. Viewing photos, watching videos, and even browsing the web are more enjoyable on the Note20 5G.
  • Versatile Camera System: The Note20 5G's camera system is far more versatile than the Redmi A3's. The telephoto and ultrawide lenses, along with advanced features like OIS and 8K video recording, allow for capturing a wider range of photos and videos with better quality.
  • Faster Charging and Wireless Charging: While the battery capacity is smaller, the faster charging and wireless charging capabilities offer added convenience.

While the Redmi A3 has a larger battery and a newer version of Android, the performance, display, and camera advantages of the Note20 5G outweigh these benefits for my personal use case. The Note 20 5G provides a much more enjoyable and productive smartphone experience overall.

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.