Samsung Galaxy S21+ 5G vs Xiaomi Redmi Note 10 - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 March 16, 2021
Release Year 2021 2021

Physical

Volume 95.23 cm³ 99.25 cm³
Screen Size to Weight Ratio 3.35 "/g 3.6 "/g
Weight 200 g 178.8 g
Height 161.5 mm 160.5 mm
Width 75.6 mm 74.5 mm
Thickness 7.8 mm 8.3 mm
Foldable Design No No
Available Colors
  • Phantom Violet
  • Phantom Pink
  • Phantom Black
  • Phantom Silver
  • Phantom Gold
  • Phantom Red
  • Shadow Black (Onyx Gray)
  • Frost White (Pebble White)
  • Aqua Green (Lake Green)

Display

Screen Size 6.7 " 6.43 "
Resolution 1080 x 2400 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 88.8 % 83.5 %
Pixel Density 394 PPI 409 PPI
Refresh Rate 120 Hz N/A
Typical Brightness N/A 450 nits
HBM Brightness N/A N/A
Peak Brightness 1300 nits 1100 nits

Hardware

Battery Capacity per Screen Area 106.93 mAh/in² 120.93 mAh/in²
Battery Density 50.4 mAh/cm³ 50.38 mAh/cm³
Battery Capacity 4800 mAh 5000 mAh
NFC Support Yes No
Chipset Exynos 2100 (5 nm) - International Qualcomm SDM678 Snapdragon 678 (11 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (2x2.2 GHz Kryo 460 Gold & 6x1.7 GHz Kryo 460 Silver)
GPU Mali-G78 MP14 - International Adreno 612

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 11 11
Maximum OS Version 15 12

Comparison Summary

1. Specifications Comparison

Design

FeatureSamsung Galaxy S21+ 5GXiaomi Redmi Note 10Practical Impact
Dimensions161.5 x 75.6 x 7.8 mm160.5 x 74.5 x 8.3 mmS21+ is slightly wider, Note 10 is slightly thicker; overall similar size, Note 10 feels more compact
Weight200g178.8gRedmi Note 10 is significantly lighter, better for extended use and one-handed operation
Build Quality (Screen Protection)Corning Gorilla Glass VictusCorning Gorilla Glass 3S21+ is more resistant to scratches and drops

Display

FeatureSamsung Galaxy S21+ 5GXiaomi Redmi Note 10Practical Impact
Size6.7"6.43"S21+ has a larger display, better for media consumption and multitasking
Resolution1080x24001080x2400Identical sharpness for both phones.
PPI394409Both have similar pixel density, resulting in comparable sharpness in normal use.
TechnologyAMOLEDAMOLEDBoth have vibrant colors and deep blacks; expect great contrast on both.
Refresh Rate120Hz60HzS21+ offers much smoother scrolling, animations, and gaming experiences.
Brightness1300 nits1100 nitsS21+ is noticeably brighter, offering better outdoor visibility in direct sunlight.

Performance

FeatureSamsung Galaxy S21+ 5G (International)Xiaomi Redmi Note 10Practical Impact
ChipsetExynos 2100 (5 nm)Snapdragon 678 (11 nm)S21+ has a much more powerful processor, resulting in significantly faster app loading, smoother multitasking and better gaming performance
AnTuTu Score749,100277,254S21+ scores significantly higher in benchmarks, confirming the noticeable performance advantage.
GPUMali-G78 MP14Adreno 612S21+ has a superior GPU, offering better gaming and graphics performance.

Camera

FeatureSamsung Galaxy S21+ 5GXiaomi Redmi Note 10Practical Impact
Standard Camera12MP, f/1.8, 1/1.76", 1.8µm (Sony IMX555)48MP, f/1.79, 1/2", 0.8µm (Sony IMX582)Redmi Note 10 has higher resolution, S21+ has larger sensor and slightly wider aperture potentially better in low light conditions
Telephoto + Portrait64MP, f/2.0, 1/1.72", 0.8µm (Samsung Bright S5KGW2)N/AS21+ has dedicated telephoto zoom, enabling better zoomed photos.
Selfie Camera10MP, f/2.2, 1/3.2", 1.22µm (Sony IMX374)13MP, f/2.45, 1/3.06", 1.12µm (Omnivision OV13B10)Xiaomi has higher resolution, S21+ has slightly wider aperture, expect comparable results but with slight edge to Xiaomi
Wide Angle Lens12MP, f/2.2, 1/2.55", 1.40µm (Sony IMX563)8MP, f/2.2, 1/2.8", 1.14µm (Sony IMX355)S21+ has dedicated wide angle lens, enabling better wide angle photos.
Portrait Mode (depth)N/A2MP, f/2.4Redmi Note 10 has a dedicated depth sensor for better portrait mode effects.
Macro LensN/A2MP, f/2.4, 1/5" (GalaxyCore GC02M1)Redmi Note 10 has a dedicated macro lens, offering closeup photography
VideoUp to 8K@24fps with HDR, EIS, Stereo SoundUp to 4K@30fpsS21+ offers significantly higher video resolution capabilities and superior stabilization, and better overall quality
DxOMark111 (Mobile), 118 (Photo), 89 (Video)N/AS21+ has been benchmarked with a good camera performance, better than most phones within it's price range, Redmi Note 10 has not been benchmarked

Battery

FeatureSamsung Galaxy S21+ 5GXiaomi Redmi Note 10Practical Impact
Capacity4800mAh5000mAhRedmi Note 10 has a slightly larger battery, potentially providing slightly longer battery life.
Charging25W33WRedmi Note 10 charges faster than S21+.
FeaturesWireless charging 15W, reverse wireless charging 4.5W, no charge in-boxNoneS21+ offers wireless charging and reverse wireless charging, but does not come with a charger in the box.

2. Key Differences Analysis

Samsung Galaxy S21+ 5G Advantages:

  • Significantly Better Performance: The Exynos 2100 chipset provides a much faster user experience for all tasks, including gaming, multitasking, and app loading.
  • Superior Display: The 120Hz refresh rate and higher brightness make for a much more fluid and enjoyable visual experience, especially noticeable in direct sunlight.
  • Better Camera System: Offers more versatile camera capabilities with telephoto zoom, wider angle lens and high-quality video recording, and better low-light performance.
  • Advanced Wireless Charging: Offers 15W wireless charging and reverse wireless charging for convenience.
  • More Advanced WiFi: The Wi-Fi 6 support provides faster network speed when used with compatible routers.
  • Higher Storage Options: Available with higher storage option (256GB vs 128GB).
  • Premium Build & Screen Protection: Utilizes Gorilla Glass Victus for enhanced durability.
  • eSIM Support: Offers eSIM functionality for easy carrier switching.
  • Advanced Audio: Dolby Atmos and noise cancellation mic provide a more immersive and clearer audio experience.

    Practical Implication: The S21+ excels in demanding tasks, premium experience, better image and video quality, and offers convenient features.

Xiaomi Redmi Note 10 Advantages:

  • Lighter & More Compact Design: Easier to handle and carry for longer periods.
  • Longer Battery Life & Faster Charging: Provides slightly better battery life and significantly faster charging times.
  • More Comprehensive Camera System: Offers dedicated macro lens and depth sensor, as well as a wide angle, providing more creative options.
  • More Affordable: Typically comes at a lower price point than the Samsung.

    Practical Implication: The Redmi Note 10 excels in practicality, especially in battery life, speed and versatility in photography, and comes at a lower price.

Trade-offs:

  • S21+: Sacrifices some battery capacity and charging speed for performance, display, and camera quality. It also doesn't include a charger in the box.
  • Redmi Note 10: Offers good value for money but compromises on performance, display smoothness, and lacks premium features.

3. User Profiles & Recommendations

Samsung Galaxy S21+ 5G: Ideal Users

  • Power Users: Those who demand the best performance for gaming, video editing, and multitasking.
  • Content Creators: Users who prioritize camera quality, especially video recording and zoom capabilities.
  • Multimedia Enthusiasts: Individuals who appreciate a high-quality display with a smooth refresh rate and great colors.
  • Professionals: Users who need a reliable device with advanced features and good overall performance.
    • Use Case Examples: High-end mobile gaming, professional video editing, viewing HDR content, frequent travel (eSIM), professional photo taking.

Xiaomi Redmi Note 10: Ideal Users

  • Budget-Conscious Consumers: Users seeking a capable phone without breaking the bank.
  • Casual Users: Individuals who primarily use their phone for social media, communication, and light media consumption.
  • Photography Enthusiasts: Users who want a versatile camera system with macro and depth sensors, and wide angle at an affordable price.
  • Users Prioritizing Battery Life and Fast Charging: Those who value long-lasting battery and quicker recharge times.
    • Use Case Examples: Social media browsing, casual mobile gaming, daily communication, macro photography, regular photo taking.

4. Decision Framework

Key Questions for Buyers:

  1. What is my budget? The Redmi Note 10 is much more budget-friendly.
  2. How important is performance and gaming? The S21+ excels here.
  3. What are my camera priorities? The S21+ has better overall image quality, more consistent shots, and advanced video recording capabilities, while the Redmi Note 10 offers creative lens options (wide-angle, macro, depth) for versatile shooting.

Scenario-Based Recommendations:

  • Scenario 1: Best Overall Performance and Premium Experience: If money is less of an issue and you need top performance, a premium display, and advanced camera features, choose the Samsung Galaxy S21+ 5G.
  • Scenario 2: Best Value and Versatile Camera System: If you're on a tight budget and prioritize longer battery life, faster charging, creative camera options, and a lightweight design, go for the Xiaomi Redmi Note 10.
  • Scenario 3: Balanced User who does a little of everything: If you value having more than average specs in all fields, with an emphasis on a larger screen, go for the Samsung Galaxy S21+ 5G

My Choice

If I were choosing between these two phones, I would go with the Samsung Galaxy S21+ 5G. The superior performance, significantly better display (especially with the 120Hz refresh rate), and higher quality camera system with telephoto zoom are worth the extra cost for my use case. I do value a good screen and I play games on my phone occasionally, so the increased smoothness will be a huge plus, and I don't mind sacrificing a bit of battery life as I am close to chargers most of the time. The slightly better image quality will ensure I am more satisfied with the pictures I take, and the wireless charging is also an added benefit for me. While the Xiaomi Redmi Note 10 is an excellent phone for the price, it doesn't quite match the premium experience I prefer in my daily driver. However, if budget is a primary concern, the Redmi Note 10 remains a very competitive option and a good choice.

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.