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

Detailed Comparison

Specification

General

Launch Date January 29, 2021 March 31, 2022
Release Year 2021 2022

Physical

Volume 85.33 cm³ 114.42 cm³
Screen Size to Weight Ratio 3.67 "/g 3.37 "/g
Weight 169 g 194 g
Height 151.7 mm 164.9 mm
Width 71.2 mm 77.1 mm
Thickness 7.9 mm 9 mm
Foldable Design No No
Available Colors
  • Phantom White
  • Phantom Gray
  • Phantom Violet
  • Phantom Pink
  • Sea Blue
  • Charcoal Black
  • Slate Grey

Display

Screen Size 6.2 " 6.53 "
Resolution 1080 x 2400 720 x 1600
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 85.9 % 81 %
Pixel Density 421 PPI 269 PPI
Refresh Rate 120 Hz N/A
Typical Brightness N/A 400 nits
HBM Brightness N/A N/A
Peak Brightness 1300 nits N/A

Hardware

Battery Capacity per Screen Area 104.06 mAh/in² 117.26 mAh/in²
Battery Density 46.88 mAh/cm³ 43.7 mAh/cm³
Battery Capacity 4000 mAh 5000 mAh
NFC Support Yes No
Chipset Exynos 2100 (5 nm) - International Mediatek MT6762G Helio G25 (12 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (4x2.0 GHz Cortex-A53 & 4x1.5 GHz Cortex-A53)
GPU Mali-G78 MP14 - International 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 microUSB 2.0

Software

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

Comparison Summary

1. Specifications Comparison

Here's a detailed comparison of the Samsung Galaxy S21 5G and the Xiaomi Redmi 10A, focusing on practical implications:

Design

FeatureSamsung Galaxy S21 5GXiaomi Redmi 10APractical Impact
Dimensions151.7 × 71.2 × 7.9 mm164.9 × 77.1 × 9 mmThe S21 is more compact, making it easier to handle and pocket. The 10A is noticeably larger and bulkier.
Weight169g194gThe S21 is significantly lighter, enhancing comfort during prolonged use.
BuildCorning Gorilla Glass Victus (Screen)UnknownS21 has superior screen protection; the 10A's protection is unknown.

Display

FeatureSamsung Galaxy S21 5GXiaomi Redmi 10APractical Impact
Size6.2"6.53"The 10A offers a slightly larger screen, potentially better for media consumption. The S21 is more compact and pocketable.
Resolution1080x2400720x1600The S21's higher resolution results in a much sharper and clearer display. Text and images will appear less pixelated.
PPI421269The S21 offers a much sharper display, making images and text crisper, which is beneficial for detail-oriented tasks and reading.
TechnologyAMOLEDIPS LCDAMOLED offers significantly better contrast, deeper blacks, and more vibrant colors. It also tends to be more energy-efficient, especially with dark themes.
Refresh Rate120Hz60HzThe S21's 120Hz refresh rate makes scrolling and animations much smoother and more responsive, enhancing user experience during everyday tasks and gaming.
Brightness1300 nits0 nitsThe S21 is significantly brighter, offering excellent visibility even in direct sunlight. The 10A's brightness is unknown.

Performance

FeatureSamsung Galaxy S21 5GXiaomi Redmi 10APractical Impact
ChipsetExynos 2100 (5 nm)Mediatek MT6762G Helio G25 (12 nm)The S21's chipset is substantially more powerful, resulting in faster app loading, smoother multitasking, and better gaming performance.
AnTuTu Score749,100102,778The S21 is significantly faster. This translates to a smoother experience with less lag, quicker app launches and much better gaming capabilities.
GPUMali-G78 MP14PowerVR GE8320The S21 has a much more powerful GPU that provides superior graphics performance for demanding tasks such as gaming and video editing.
RAM8GB2/3/4/6 GBThe S21's higher RAM ensures smoother multitasking, allowing more apps to run in the background without slowing down the device.

Camera

FeatureSamsung Galaxy S21 5GXiaomi Redmi 10APractical Impact
Main Camera12MP, f/1.8, 1/1.76", 1.8µm13MP, f/2.2, 1.0µmThe S21's main sensor has larger pixels, a wider aperture, and better sensor technology, leading to better low-light performance and overall image quality despite slightly lower resolution. The 10A main sensor has smaller pixel size and narrower aperture.
Telephoto64MP, f/2.0NoneThe S21's telephoto lens allows for optical zoom, enabling sharper close-up shots without digital zoom distortion.
Ultra-wide12.2MP, f/2.2NoneThe S21 provides a wider field of view, allowing more of a scene to be captured in a single shot.
Selfie Camera10MP, f/2.2, 1.22µm5MP, f/2.2, 1.12µmThe S21's front-facing camera captures higher-resolution selfies.
Portrait Mode (Depth)None2MP, f/2.4The 10A has a dedicated depth sensor for portrait mode, which the S21 does not have.
VideoUp to 8K@24fps, 4K@60fpsUp to 1080p@30fpsThe S21 can capture much higher-resolution videos for professional or advanced content creation
StabilizationYes (EIS and OIS)NoThe S21 offers superior video stabilization through both electronic (EIS) and optical (OIS) methods, reducing shake and motion blur in video.

Battery

FeatureSamsung Galaxy S21 5GXiaomi Redmi 10APractical Impact
Capacity4000 mAh5000 mAhThe 10A has a larger battery, potentially providing longer usage between charges. However, real-world usage depends on optimization and power consumption.
Charging25W Fast Charging10W Fast ChargingThe S21 charges significantly faster, reducing waiting times to recharge.
Features15W Wireless charging, 4.5W Reverse wireless chargingNoneThe S21 offers convenient wireless charging and reverse wireless charging, which is especially useful when you need to charge other devices on the go.

Other

FeatureSamsung Galaxy S21 5GXiaomi Redmi 10APractical Impact
Operating SystemAndroid 11 (upgradable to 15)Android 11The S21 receives several software updates which leads to extended usage with optimized software experience
Wi-FiWi-Fi 6Wi-Fi 4The S21 offers newer, faster Wi-Fi technology for better network performance.
Bluetooth5.0 LE, more advanced features5.0 LE, fewer featuresS21 offers more bluetooth features suitable for connecting with audio and other devices.
GPSMore satellite systemsFewer satellite systemsThe S21 has enhanced location accuracy.
Internal Storage128/256 GB32/64/128 GBThe S21 offers more storage for apps, photos and videos.
AudioStereo Speakers, Dolby AtmosBasic AudioThe S21 has enhanced audio features and quality for a more immersive experience.
SecurityFingerprintFingerprintBasic biometric security.
SensorsMore sensorsBasic sensorsThe S21 has more sensors suitable for gaming and other advanced usage.

2. Key Differences Analysis

Samsung Galaxy S21 5G Advantages:

  • Superior Display: AMOLED with 120Hz, higher resolution, better color, and higher brightness.
    • Practical Impact: Much more enjoyable for media consumption, gaming, and general use. Better visibility under any lighting conditions.
  • Significantly Higher Performance: More powerful chipset and GPU.
    • Practical Impact: Faster app loading, smoother multitasking, and better gaming experience.
  • Superior Camera System: Multiple lenses with OIS, better video quality, telephoto, and ultrawide.
    • Practical Impact: Enhanced versatility, better image quality in various lighting conditions, and better video recording with stabilization.
  • Faster Charging & Wireless Charging: 25W fast charging plus 15W wireless and 4.5W reverse wireless charging.
    • Practical Impact: Quicker recharge times and ability to charge other devices wirelessly.
  • Advanced Audio: Dolby Atmos and stereo speakers.
    • Practical Impact: More immersive and clear audio experience.
  • More Advanced Connectivity: Supports Wi-Fi 6, and more GPS satellite systems.
    • Practical Impact: Faster and more reliable connectivity with better location tracking.

Xiaomi Redmi 10A Advantages:

  • Larger Battery: 5000 mAh capacity.
    • Practical Impact: Potentially longer battery life.
  • Lower Price: Generally more affordable.
    • Practical Impact: Cost-effective option for budget-conscious users.
  • Dedicated depth sensor: For portrait mode.
    • Practical Impact: Better portrait photos.

Trade-offs:

  • S21:
    • Smaller battery, may not last as long as the 10A.
    • More expensive.
    • No included charger.
  • 10A:
    • Significantly lower performance in all areas.
    • Inferior display quality.
    • Basic camera system with no optical zoom or stabilization.
    • Slower charging.
    • Lower quality audio.

3. User Profiles & Recommendations

Samsung Galaxy S21 5G: Ideal for:

  • Power Users: Individuals who demand high performance for gaming, multitasking, and heavy app use.
  • Content Creators: Those who need a versatile camera system for photos and videos.
  • Media Enthusiasts: Users who prioritize a high-quality display for watching videos and playing games.
  • Tech Savvy Users: Those who want advanced features like wireless charging and superior connectivity.
  • Users looking for a premium experience: Who want a high end device with all the bells and whistles.
  • Those who need a portable phone: Who want something easy to handle and pocketable.

Specific Use Cases:

  • Mobile gaming (high graphics).
  • Professional photography and videography.
  • Seamless multitasking between demanding apps.
  • Watching high-resolution content in all lighting conditions.
  • Travelers needing accurate GPS and fast connectivity.

Xiaomi Redmi 10A: Ideal for:

  • Budget-Conscious Users: Individuals who want a basic smartphone experience without spending much money.
  • Casual Users: Those who primarily use their phone for calls, messages, and basic social media browsing.
  • Users needing long battery life Those who prioritize battery longevity over high performance.
  • Users who like a bigger phone: Those who prefer larger screens.
  • First-time smartphone users Those who have never had a smartphone before.

Specific Use Cases:

  • Basic social media browsing.
  • Everyday communication (calls and messaging).
  • Casual mobile gaming (lightweight games).
  • Users who rarely use their camera or take photos.
  • Users who need a phone that lasts the entire day without charging.

Price-to-Value Ratio:

  • S21: Higher price point but provides significantly more value for users who need high performance and advanced features.
  • 10A: Budget-friendly but offers a very basic experience with noticeable compromises in performance and features.

4. Decision Framework

Key Questions for Buyers:

  1. What is my budget? The S21 is a premium device with a higher price tag, while the 10A is a budget option.
  2. What do I primarily use my phone for? Heavy users will benefit from the S21, while those needing basic functionalities can consider the 10A.
  3. How important is the camera and display quality? If these are priorities, the S21 is the better option.

Scenario-Based Recommendations:

  • Scenario 1: Gaming and Multimedia: If you play games, watch videos often and care about high fidelity display, the S21 is the clear choice.
  • Scenario 2: Budget is a Primary Concern: If you are extremely budget-conscious and need something for basic tasks, then the 10A will suffice.
  • Scenario 3: Photography and Content Creation: For higher quality images and video, the S21's camera system is far superior.
  • Scenario 4: Long Battery Life: If you need to go multiple days on a single charge and rarely use your phone the Xiaomi 10A is the superior choice.

My Choice

If I were choosing between these two phones, I would choose the Samsung Galaxy S21 5G. While the Xiaomi Redmi 10A has the advantage of a lower price point and potentially longer battery life, the S21 offers a drastically superior experience in almost every other aspect. The much better screen, significantly faster performance, higher quality camera system, wireless charging, more advanced connectivity, and enhanced audio make it the clear winner for anyone who values a more modern and high performance smartphone.

The S21 provides a far more versatile device that can handle almost any task I throw at it. The 120Hz AMOLED display is a game changer for media consumption and daily use. While the initial cost is higher, the long-term usability and capabilities of the S21 justify the investment over the limited and basic Redmi 10A. While battery life is a consideration, the fast charging makes up for the slightly smaller battery. I also prefer the smaller, lighter, and more premium feel of 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
  • Digital media communication
  • Technical storytelling
  • User-centric technology insights

Bridging technical complexity with engaging, accessible narratives.