Xiaomi Redmi 9C vs Samsung Galaxy S21+ 5G - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date August 12, 2020 January 29, 2021
Release Year 2020 2021

Physical

Volume 114.28 cm³ 95.23 cm³
Screen Size to Weight Ratio 3.33 "/g 3.35 "/g
Weight 196 g 200 g
Height 164.9 mm 161.5 mm
Width 77 mm 75.6 mm
Thickness 9 mm 7.8 mm
Foldable Design No No
Available Colors
  • Midnight Gray
  • Sunrise Orange
  • Twilight Blue
  • Phantom Violet
  • Phantom Pink
  • Phantom Black
  • Phantom Silver
  • Phantom Gold
  • Phantom Red

Display

Screen Size 6.53 " 6.7 "
Resolution 720 x 1600 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 81.1 % 88.8 %
Pixel Density 269 PPI 394 PPI
Refresh Rate N/A 120 Hz
Typical Brightness 400 nits N/A
HBM Brightness N/A N/A
Peak Brightness N/A 1300 nits

Hardware

Battery Capacity per Screen Area 117.26 mAh/in² 106.93 mAh/in²
Battery Density 43.75 mAh/cm³ 50.4 mAh/cm³
Battery Capacity 5000 mAh 4800 mAh
NFC Support No Yes
Chipset Mediatek MT6765G Helio G35 (12 nm) Exynos 2100 (5 nm) - International
CPU Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53) Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International
GPU PowerVR GE8320 Mali-G78 MP14 - International

Connectivity

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

Software

Operating System Android Android
Initial OS Version 10 11
Maximum OS Version 15

Comparison Summary

Smartphone Comparison: Xiaomi Redmi 9C vs. Samsung Galaxy S21+ 5G

1. Specifications Comparison

FeatureXiaomi Redmi 9CSamsung Galaxy S21+ 5GPractical Impact
Design
Dimensions164.9 x 77 x 9 mm161.5 x 75.6 x 7.8 mmRedmi 9C is slightly larger and thicker, potentially less comfortable for one-handed use.
Weight196g200gVirtually identical weight; negligible difference.
Build Quality (Screen Protection)UnknownCorning Gorilla Glass VictusS21+ 5G offers significantly better scratch and impact resistance for the screen.
Display
Size6.53"6.7"S21+ 5G offers a slightly larger viewing area for media consumption and multitasking.
Resolution720x16001080x2400S21+ 5G has a much sharper and clearer display, significantly improving the viewing experience for all content.
Pixel Density (PPI)269394S21+ 5G provides crisper text and images, reducing eye strain.
TechnologyIPS LCDAMOLEDS21+ 5G boasts vibrant colors, deeper blacks, and better contrast, enhancing the visual experience, especially for multimedia.
Refresh Rate60Hz120HzS21+ 5G offers smoother scrolling, animations, and gaming, resulting in a more responsive and fluid user experience.
Brightness0 nits1300 nitsS21+ 5G is much more visible in bright sunlight, making it easier to use outdoors.
Performance
ChipsetMediatek MT6765G Helio G35 (12 nm)Exynos 2100 (5 nm) - InternationalS21+ 5G offers vastly superior performance, handling demanding apps, multitasking, and gaming with ease.
AnTuTu Score110,490749,100S21+ 5G is significantly faster and more responsive in all tasks.
GPUPowerVR GE8320Mali-G78 MP14 - InternationalS21+ 5G delivers a much better gaming experience with smoother graphics and higher frame rates.
RAM2/3/4 GB8 GBS21+ 5G can handle more apps running in the background without slowdowns.
Camera
Main Camera13MP, f/2.212MP, f/1.8, 1/1.76" sensor, 1.8µm pixelsS21+ 5G's larger sensor and wider aperture allow for better low-light performance and image quality.
Ultrawide CameraNone12.2MP, f/2.2S21+ 5G captures wider scenes and group photos.
Telephoto CameraNone64MP, f/2.0S21+ 5G enables optical zoom for detailed close-ups without significant quality loss.
Selfie Camera5MP, f/2.210MP, f/2.2, 1/3.2" sensor, 1.22µm pixelsS21+ 5G captures higher-resolution and better-quality selfies.
Video Recording1080p@30fps8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fpsS21+ 5G can record much higher-resolution videos with better stabilization and slow-motion capabilities.
Camera FeaturesBasic featuresAdvanced features (OIS, RAW, Night Mode, etc.)S21+ 5G offers more versatile and advanced photography options.
Battery
Capacity5000mAh4800mAhRedmi 9C offers a slightly larger battery, potentially leading to slightly longer battery life under similar usage.
Charging10W25WS21+ 5G charges much faster, reducing downtime.
Wireless ChargingNo15WS21+ 5G offers convenient wireless charging capabilities.
Reverse Wireless ChargingNo4.5WS21+ 5G can wirelessly charge other devices like earbuds or smartwatches.
Software
OSAndroid 10Android 11 (upgradeable to 15)S21+ 5G has a newer OS and guaranteed updates for longer, providing access to the latest features and security patches.
Connectivity
Wi-Fi802.11 b/g/n802.11 a/b/g/n/ac/ax (Wi-Fi 6)S21+ 5G supports faster and more reliable Wi-Fi connections.
Bluetooth5.05.0Similar Bluetooth capabilities.
GPSGPS, A-GPS, GLONASS, BeidouGPS, A-GPS, GLONASS, Beidou, GalileoS21+ 5G offers more precise location tracking.
SIMDual SIMDual SIM (Nano + Nano/eSIM)S21+ 5G offers the flexibility of using an eSIM.
Storage
Internal Storage32/64/128 GB128/256 GBS21+ 5G offers more storage capacity.
Expandable StorageNoNoNeither phone supports expandable storage.
Audio
Audio QualityBasic audio featuresDolby Atmos, Hi-Res Audio, Stereo Speakers, Noise cancellation microphoneS21+ 5G delivers a richer and more immersive audio experience.
Security
Security FeaturesRear-mounted fingerprint sensorBasic fingerprint sensorSimilar fingerprint sensor technology for biometric security.
Other
SensorsAccelerometer, Magnetometer, Ultrasonic ProximityAccelerometer, Compass, Gyroscope, Proximity, BarometerS21+ 5G has more advanced sensors for enhanced functionality and features.

2. Key Differences Analysis

Xiaomi Redmi 9C Advantages:

  • Potentially Longer Battery Life: Slightly larger battery capacity (5000mAh vs 4800mAh). Practical Implication: May offer marginally better battery life for users who prioritize longevity over performance.
  • Affordability: Redmi 9C is significantly cheaper. Practical Implication: Makes it an accessible option for budget-conscious consumers.

Samsung Galaxy S21+ 5G Advantages:

  • Superior Display: AMOLED, higher resolution, higher refresh rate, higher brightness. Practical Implication: Provides a significantly better viewing experience for all types of content, especially outdoors.
  • Much Faster Performance: More powerful processor and more RAM. Practical Implication: Enables smoother multitasking, faster app loading, and better gaming performance.
  • Significantly Better Camera System: More versatile camera setup with ultrawide, telephoto lenses, and advanced features. Practical Implication: Allows for higher-quality photos and videos in various scenarios.
  • Faster Charging and Wireless Charging: 25W fast charging and 15W wireless charging. Practical Implication: Quickly replenish the battery and enjoy the convenience of wireless charging.
  • Better Audio Quality: Stereo speakers, Dolby Atmos support, Hi-Res audio, Noise cancellation microphone. Practical Implication: Enhances the audio experience for music, videos, and calls.
  • More Advanced Features: IP68 water resistance, Samsung DeX support, more comprehensive sensor suite. Practical Implication: Offers a more premium and feature-rich user experience.
  • Better Software Support: Newer Android version and longer update support. Practical Implication: Ensures access to the latest features, security patches, and improvements for a longer period.

Trade-offs:

  • The Redmi 9C prioritizes affordability and battery life, sacrificing performance, display quality, and camera capabilities.
  • The S21+ 5G offers a premium experience at a significantly higher price point.

3. User Profiles & Recommendations

Xiaomi Redmi 9C Ideal Users:

  • Budget-conscious users: Those seeking the most affordable smartphone option.
  • Users with basic needs: Primarily use the phone for calls, texts, and light browsing.
  • Users who prioritize battery life: Value battery longevity above all else.

Use Cases:

  • A secondary phone for emergencies.
  • A basic phone for children or elderly individuals.
  • A temporary phone while traveling.

Samsung Galaxy S21+ 5G Ideal Users:

  • Tech enthusiasts: Those seeking a high-performance smartphone with advanced features.
  • Multimedia consumers: Users who frequently watch videos, play games, and browse social media.
  • Photography enthusiasts: Those who want a versatile camera system for capturing high-quality photos and videos.
  • Professionals: Users who need a reliable and powerful device for work-related tasks.

Use Cases:

  • Mobile photography and videography.
  • Gaming and entertainment.
  • Productivity and multitasking.
  • Content creation and consumption.

Price-to-Value Ratio:

  • The Redmi 9C offers good value for its extremely low price point, fulfilling basic smartphone needs.
  • The S21+ 5G offers excellent value for users who prioritize performance, display quality, camera capabilities, and advanced features, but at a premium price.

4. Decision Framework

Consider these questions:

  1. What is your budget? This is the most critical factor in determining which phone is suitable.
  2. What are your primary use cases? Do you need a phone for basic communication, or do you require a device for demanding tasks like gaming, photography, and video editing?
  3. What features are most important to you? Are you willing to sacrifice performance and display quality for longer battery life and a lower price?

Scenario-Based Recommendations:

  • Scenario 1: Limited Budget, Basic Needs: Choose the Xiaomi Redmi 9C.
  • Scenario 2: Balanced Budget, Moderate Needs: The phones in this comparison aren't close enough in specs to make a good comparison.
  • Scenario 3: No Budget Constraints, High Demands: Choose the Samsung Galaxy S21+ 5G.

My Choice

If I were to choose between these two phones, I would pick the Samsung Galaxy S21+ 5G. The massive difference in performance, display quality, and camera capabilities is just too significant to ignore. While the Redmi 9C has a slightly larger battery, the S21+ 5G's faster charging and other features make it the better option. For my use case, which includes photography, video, and gaming, the S21+ 5G is a clear winner. Even though it's more expensive, I believe the investment is worth it.

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.