Samsung Galaxy S21+ 5G vs Xiaomi Redmi 13C - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 November 10, 2023
Release Year 2021 2023

Physical

Volume 95.23 cm³ 106.14 cm³
Screen Size to Weight Ratio 3.35 "/g 3.51 "/g
Weight 200 g 192 g
Height 161.5 mm 168 mm
Width 75.6 mm 78 mm
Thickness 7.8 mm 8.1 mm
Foldable Design No No
Available Colors
  • Phantom Violet
  • Phantom Pink
  • Phantom Black
  • Phantom Silver
  • Phantom Gold
  • Phantom Red
  • Midnight Black
  • Glacier White
  • Navy Blue
  • Clover Green

Display

Screen Size 6.7 " 6.74 "
Resolution 1080 x 2400 720 x 1600
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 88.8 % 83.7 %
Pixel Density 394 PPI 260 PPI
Refresh Rate 120 Hz 90 Hz
Typical Brightness N/A 450 nits
HBM Brightness N/A 600 nits
Peak Brightness 1300 nits N/A

Hardware

Battery Capacity per Screen Area 106.93 mAh/in² 110.07 mAh/in²
Battery Density 50.4 mAh/cm³ 47.11 mAh/cm³
Battery Capacity 4800 mAh 5000 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Mediatek MT6769Z Helio G85 (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 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 13
Maximum OS Version 15

Comparison Summary

1. Specifications Comparison

FeatureSamsung Galaxy S21+ 5GXiaomi Redmi 13CPractical Impact
Design
Dimensions161.5 × 75.6 × 7.8 mm168 × 78 × 8.1 mmRedmi 13C is larger and slightly thicker, making the S21+ 5G more pocketable.
Weight200g192gRedmi 13C is slightly lighter, which might be noticeable during extended use.
Display
Size6.7"6.74"Virtually identical screen size, no practical difference.
Resolution1080x2400720x1600S21+ has significantly sharper text and images, better for detailed viewing.
Pixel Density394 ppi260 ppiS21+ offers a noticeably clearer and more detailed display, reducing pixel visibility.
TechnologyAMOLEDIPS LCDS21+ has superior contrast, deeper blacks, more vibrant colors, and is more power-efficient with dark themes.
Refresh Rate120Hz90HzS21+ offers smoother scrolling and animations, a more responsive feel.
Brightness1300 nits0 nitsS21+ is significantly easier to view in direct sunlight; Redmi 13C brightness is unknown and may struggle outdoors.
Performance
ChipsetExynos 2100 (5 nm)Mediatek Helio G85 (12 nm)S21+ provides much faster app loading, smoother multitasking and superior gaming performance.
AnTuTu Score749,100222,000S21+ has drastically higher performance, significantly better for demanding tasks and gaming.
GPUMali-G78 MP14Mali-G52 MC2S21+ has a substantially more powerful GPU for graphic-intensive apps and games.
Camera
Main Camera Resolution12MP50MPRedmi 13C has higher resolution, but pixel size is smaller, affecting low-light performance.
Main Camera Sensor Size1/1.76"1/2.76"S21+ has a larger sensor for better light capture and low-light image quality.
Telephoto CameraYesNoS21+ offers optical zoom capabilities and portrait mode that the Redmi 13C lacks.
Wide Angle CameraYesNoS21+ has a dedicated wide-angle lens, while the Redmi 13C does not.
Macro LensNoYesRedmi 13C has a dedicated macro lens for close-up photography.
Selfie Camera Resolution10MP8MPS21+ has a slightly higher resolution selfie camera.
Selfie Camera Aperturef/2.2f/2.0Redmi 13C has a slightly wider aperture for slightly better low-light selfies.
Video RecordingUp to 8K@24fpsUp to 1080p@30fpsS21+ offers significantly higher quality and more versatile video recording options.
DXOMARK ScoreMain: 111, Photo: 118, Video: 89Not TestedS21+ has a rated high-quality camera, while the Redmi 13C's camera performance is untested.
Camera Features4K/8K video, OIS, Optical zoomNo OIS, No optical zoomS21+ has more advanced features for superior photo and video quality, like optical zoom and stabilization.
Battery
Capacity4800mAh5000mAhRedmi 13C has a slightly larger battery, possibly slightly better battery life.
Charging25W fast charging18W fast chargingS21+ charges faster, reducing time spent plugged in.
Wireless ChargingYes (15W)NoS21+ supports convenient wireless charging.
Reverse ChargingYesYesBoth phones can charge other devices.
Software
OSAndroid 11, up to 15Android 13Redmi 13C ships with a newer OS out of the box, while S21+ is upgradable.
Connectivity
Wi-FiWi-Fi 6 (802.11ax)Wi-Fi 5 (802.11ac)S21+ supports faster and more efficient Wi-Fi speeds.
Bluetooth5.05.3Redmi 13C has a newer version for better energy efficiency.
GPSL1+L5, E1+E5aL1, E1S21+ offers higher GPS accuracy through dual-band support.
SIMeSIM + 2x Nano2x NanoS21+ offers the flexibility of using an eSIM.
Storage
Internal128/256 GB128/256 GBSame internal storage options.
RAM8 GB4/6/8 GBBoth can have 8 GB RAM, making them comparably smooth.
ExpandableNoNoNeither supports additional storage via microSD card.
Audio
QualityDolby Atmos, Hi-Res Audio, Noise cancellation micStereo SpeakersS21+ has better audio quality and clarity.
Security
Fingerprint SensorIn-screenSide-mountedRedmi 13C has a faster and more reliable side-mounted sensor.
Build Quality
Screen ProtectionGorilla Glass VictusUnknownS21+ has superior screen protection with Gorilla Glass Victus.
Sensors
SensorsBarometer, GyroscopeUltrasonic Proximity VirtualS21+ includes more sensors for a wider range of functionalities.

2. Key Differences Analysis

Samsung Galaxy S21+ 5G Advantages:

  • Superior Display: AMOLED with higher resolution, brightness, and refresh rate offers a much better visual experience.
  • Much Higher Performance: The Exynos 2100 chipset provides significantly better performance for all tasks, especially gaming and multitasking.
  • Advanced Camera System: Offers superior image quality, optical zoom, wide-angle lens, OIS, and 8K video recording, catering to more advanced photography needs.
  • Faster Charging and Wireless Charging: Offers faster 25W wired and 15W wireless charging for convenient power management.
  • More Precise GPS & Wi-Fi 6: Improved location tracking and faster Wi-Fi performance.
  • Better Audio: Dolby Atmos, Hi-Res Audio, and noise-cancelling microphone offer richer audio playback and clearer calls.
  • Better Build Quality: Gorilla Glass Victus offers superior screen protection.

Practical Implications: The Galaxy S21+ 5G excels in areas requiring top-tier display quality, performance, and camera capabilities, making it suitable for heavy users.

Xiaomi Redmi 13C Advantages:

  • Newer OS Out-of-Box: Ships with Android 13 out of the box, with the S21+ upgrading to 15.
  • Larger Battery: Slightly larger battery for potentially longer battery life.
  • Side-Mounted Fingerprint Sensor: Generally faster and more reliable than in-display sensors.
  • Dedicated Macro Lens: Useful for detailed close-up shots.
  • More Recent Bluetooth Version: Potentially more efficient and secure Bluetooth connectivity.

Practical Implications: The Redmi 13C offers a more modern, cost-effective package with a slightly longer battery life, suitable for casual users on a budget.

Trade-offs:

  • S21+ offers far superior performance, display, camera, and audio but lacks a microSD card slot.
  • Redmi 13C provides a newer OS version, a larger battery, and a lower price but falls significantly behind in performance, display, and camera capabilities.

3. User Profiles & Recommendations

Samsung Galaxy S21+ 5G Ideal Users:

  • Power Users: Gamers, multitaskers, and those who need fast performance for demanding apps.
  • Photography Enthusiasts: Users who prioritize high-quality photos and videos, including zoom and low-light performance.
  • Media Consumers: Users who watch videos and movies regularly and appreciate excellent display quality and audio.
  • Users who want faster charging: Those who value quick charging times and the convenience of wireless charging.

Specific Use Cases:

  • Playing graphically intensive games at high settings.
  • Editing high-resolution photos and videos on the go.
  • Watching HDR content with vibrant colors and deep blacks.
  • Using advanced features like the S Pen (if available, might not be included), using Dex mode, and taking professional-quality photos and videos.

Xiaomi Redmi 13C Ideal Users:

  • Budget-Conscious Users: Users looking for a reliable smartphone at a lower price point.
  • Casual Users: People who primarily use their phone for basic tasks like browsing, social media, and light app usage.
  • Users who value battery life: Those who want a smartphone that can last through a full day of moderate use.
  • Users who need reliable fingerprint sensor: Those that may prefer the practical and fast side-mounted fingerprint reader.

Specific Use Cases:

  • Everyday tasks like social media browsing, emails, and basic web surfing.
  • Taking casual photos and videos.
  • Extended battery life for long days away from a charger.
  • Using simple navigation and location services.

Price-to-Value Ratio:

  • The S21+ offers a higher price but provides a significantly superior experience.
  • The Redmi 13C is much cheaper but offers a more basic, budget-friendly experience. The S21+ offers better value if your budget allows for it.

4. Decision Framework

Key Questions for Buyers:

  1. What is my budget? The S21+ will have a higher upfront cost, while the Redmi 13C caters to a more affordable budget.
  2. How important is performance? The S21+ offers a premium experience for demanding apps, while the Redmi 13C is better for basic use.
  3. How much do I value camera quality and display quality? S21+ is far superior in this category.

Scenario-Based Recommendations:

  • Scenario 1: Budget-Conscious User: Choose Xiaomi Redmi 13C. It's a practical phone for everyday tasks at a lower cost.

  • Scenario 2: Heavy User: Choose Samsung Galaxy S21+ 5G. Its performance, display, and advanced camera features make it better for power users.

  • Scenario 3: Photography Enthusiast: Choose Samsung Galaxy S21+ 5G. The superior camera system with optical zoom, OIS, and advanced features will provide a better photography experience.

  • Scenario 4: Casual User: Choose the Xiaomi Redmi 13C. It does all the basics well at a budget-friendly price.

Final Choice

If I were choosing between these two phones, I would pick the Samsung Galaxy S21+ 5G. Despite being an older model, the S21+ offers a dramatically better user experience in almost every key area. The higher resolution and brighter AMOLED display, along with the significantly more powerful processor and advanced camera system, make it a much more satisfying phone to use daily. I also appreciate the faster charging and wireless charging capabilities, which fit my needs better than the slightly longer battery life of the Redmi 13C.

While the Redmi 13C is more budget-friendly and has a newer version of Android out of the box, the trade-offs in performance, display quality, and camera capabilities are simply too significant for my use case. I value a smooth and premium experience, and the S21+ delivers this in a way that the Redmi 13C cannot. Even with it being older, the performance is still miles ahead of the Redmi, and I appreciate 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.

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