Samsung Galaxy S21 5G vs Xiaomi Redmi A1+ - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 September 23, 2022
Release Year 2021 2022

Physical

Volume 85.33 cm³ 115.25 cm³
Screen Size to Weight Ratio 3.67 "/g 3.4 "/g
Weight 169 g 192 g
Height 151.7 mm 164.9 mm
Width 71.2 mm 76.8 mm
Thickness 7.9 mm 9.1 mm
Foldable Design No No
Available Colors
  • Phantom White
  • Phantom Gray
  • Phantom Violet
  • Phantom Pink
  • Black
  • Light Blue
  • Light Green

Display

Screen Size 6.2 " 6.52 "
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 117.62 mAh/in²
Battery Density 46.88 mAh/cm³ 43.39 mAh/cm³
Battery Capacity 4000 mAh 5000 mAh
NFC Support Yes No
Chipset Exynos 2100 (5 nm) - International Mediatek MT6761 Helio A22 (12 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Quad-core 2.0 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 12
Maximum OS Version 15

Comparison Summary

Smartphone Comparison: Samsung Galaxy S21 5G vs. Xiaomi Redmi A1+

1. Specifications Comparison

Here's a detailed comparison of the Samsung Galaxy S21 5G and Xiaomi Redmi A1+, focusing on practical implications for the user:

FeatureSamsung Galaxy S21 5GXiaomi Redmi A1+Practical Impact
Design
Dimensions151.7 × 71.2 × 7.9 mm164.9 × 76.8 × 9.1 mmS21 5G is more compact and easier to handle one-handed; Redmi A1+ is larger and bulkier.
Weight169g192gS21 5G is lighter, making it more comfortable for prolonged use; Redmi A1+ feels heavier.
Display
Size6.2"6.52"Redmi A1+ provides a larger viewing area, better for media consumption; S21 5G is more pocketable.
Resolution1080x2400720x1600S21 5G has a much sharper, clearer display; Redmi A1+ may appear less crisp.
PPI421269S21 5G has significantly higher pixel density resulting in much sharper images, text and better visual clarity.
TechnologyAMOLEDIPS LCDS21 5G offers superior contrast, deeper blacks, more vibrant colors; Redmi A1+ has a standard LCD.
Refresh Rate120Hz60HzS21 5G has smoother animations and scrolling; Redmi A1+ has standard refresh rate.
Brightness1300 nits0 nitsS21 5G is much better for outdoor visibility in bright sunlight; Redmi A1+ brightness data is missing.
Performance
ChipsetExynos 2100 (5 nm)Mediatek MT6761 Helio A22 (12 nm)S21 5G is significantly faster and more efficient; Redmi A1+ is much slower for everyday tasks.
AnTuTu Score749,10095,000S21 5G provides noticeably better gaming, app loading, and overall performance.
GPUMali-G78 MP14PowerVR GE8320S21 5G is capable of handling demanding graphics tasks, while the Redmi A1+ has limited graphical capabilities.
Camera
Standard Camera12MP, f/1.88MP, f/2.0S21 5G captures more detailed and brighter images in various conditions.
Telephoto Camera64MP, f/2.0N/AS21 5G offers optical zoom capabilities; Redmi A1+ lacks telephoto lens
Wide Angle Camera12.2MP, f/2.2N/AS21 5G captures wide perspectives and includes a macro lens. Redmi A1+ lacks this feature
Selfie Camera10MP, f/2.25MP, f/2.2S21 5G provides sharper, clearer selfies with more detail.
VideoUp to 8K@24fpsUp to 1080p@30fpsS21 5G records much higher quality video with stabilization features; Redmi A1+ has basic video recording.
DXOMark Score (Mobile)111N/AS21 5G has much better picture quality and video recording features.
DXOMark Score (Selfie)132N/AS21 5G excels in selfie quality compared to the unrated Redmi A1+.
Battery
Capacity4000mAh5000mAhRedmi A1+ has a larger battery, potentially longer battery life, but actual results vary.
Charging25W Fast Charging10W Fast ChargingS21 5G charges faster; Redmi A1+ has slower charging.
FeaturesWireless Charging, Reverse ChargingN/AS21 5G offers additional charging features; Redmi A1+ only offers standard charging.
Software
OSAndroid 11Android 12Redmi A1+ has a slightly newer OS out of the box; S21 5G can be updated further.
Connectivity
Wi-FiWi-Fi 6 (802.11ax)802.11nS21 5G supports faster Wi-Fi standard with Dual-band; Redmi A1+ is limited to basic Wi-Fi 4.
Bluetooth5.0 with advanced codecs5.0 with EDR/AACS21 5G offers more advanced Bluetooth audio features.
GPSL1+L5 Dual BandBasic GPSS21 5G supports more satellite systems for better location accuracy.
Storage
Internal128/256 GB32 GBS21 5G offers much more storage; Redmi A1+ is limited in storage.
RAM8 GB2 GBS21 5G handles multitasking and resource-intensive apps better; Redmi A1+ struggles with heavy usage.
ExpandableNoNoNeither phone supports expandable storage.
Audio
QualityDolby Atmos, Stereo SpeakersBasic audioS21 5G has far superior sound quality for both listening and calls.
Security
Fingerprint Sensorbasic fingerprint sensorrear-mounted fingerprint sensorBoth phones provide basic fingerprint security with similar features.
Build Quality
Screen ProtectionGorilla Glass VictusUnknownS21 5G provides superior screen protection.
Sensors
SensorsBarometer, Compass, Gyroscope, ProximityAccelerometer, Ultrasonic ProximityS21 5G offers a more comprehensive sensor suite.

2. Key Differences Analysis

Here's a breakdown of the major advantages of each phone and their practical implications:

Samsung Galaxy S21 5G Advantages:

  • Superior Display: AMOLED with higher resolution, pixel density, refresh rate, and brightness results in a much better viewing experience with vibrant colors, smooth animations, and clear visibility.
  • Much Better Performance: The Exynos 2100 chipset provides a massive performance leap for gaming, multitasking, and demanding apps; the S21 5G is far smoother and more responsive.
  • Advanced Camera System: The S21 5G's versatile camera setup includes telephoto and ultrawide lenses, captures superior quality photos and videos with stabilization, and includes advanced features like 8K recording and OIS.
  • Faster Charging and Wireless Features: The S21 5G supports faster charging, wireless charging, and reverse wireless charging, offering much more convenience.
  • Enhanced Connectivity: Faster Wi-Fi and more Bluetooth codecs for enhanced data transfers and better audio quality.
  • Superior Build Quality: Corning Gorilla Glass Victus offers superior protection against scratches and drops.

Xiaomi Redmi A1+ Advantages:

  • Larger Battery: The 5000mAh battery could potentially offer longer battery life for basic tasks, though actual use varies greatly
  • Newer Android Version: Ships with Android 12 while the S21 5G ships with Android 11.
  • Lower Price: Generally much cheaper, making it a budget-friendly option.

Significant Trade-offs:

  • S21 5G: More expensive, smaller battery.
  • Redmi A1+: Vastly inferior display, camera, and performance. Lack of features like wireless charging and a telephoto camera.

3. User Profiles & Recommendations

Here are the ideal user profiles for each phone:

Samsung Galaxy S21 5G:

  • Ideal Users: Tech enthusiasts, content creators, mobile gamers, users who prioritize premium features and performance, individuals who want a high-quality camera for photography and videography, and those who demand smooth and responsive daily use.
  • Specific Use Cases:
    • High-fidelity gaming with smooth frame rates.
    • Professional-grade photography and videography.
    • Enjoying high-quality videos and streaming.
    • Demanding multitasking and performance-heavy applications.
    • Outdoor visibility in bright sunlight
    • Using wireless charging for convenience

Xiaomi Redmi A1+:

  • Ideal Users: Budget-conscious users with basic needs, first-time smartphone buyers, individuals needing a secondary device, or users who only need basic communication and light browsing.
  • Specific Use Cases:
    • Basic web browsing and social media.
    • Casual communication and phone calls.
    • Longer battery life for light usage.
    • Simple tasks and less demanding applications.
    • Users on a very strict budget.

Price-to-Value:

  • S21 5G: Provides high value for users who demand top-tier performance, display, and camera capabilities, however it is more expensive.
  • Redmi A1+: Offers a basic smartphone experience at a budget price, but compromises significantly on performance and features.

4. Decision Framework

Consider these questions before making a decision:

  1. What is your budget? If the budget is very tight, the Redmi A1+ is an option. If the budget allows, the S21 5G provides a better experience.
  2. How important is performance, display, and camera quality? If these are priorities, the S21 5G is the clear winner. If basic functionality is adequate, the Redmi A1+ can serve.
  3. What are your typical usage patterns? If the user is a gamer, media consumer, or content creator, the S21 5G is preferred. For basic communication and light usage, the Redmi A1+ might be adequate.

Scenario-Based Recommendations:

  • Scenario 1: High-Performance User: Choose the Samsung Galaxy S21 5G for smooth performance, superior display, and camera capabilities.
  • Scenario 2: Budget-Conscious User: Choose the Xiaomi Redmi A1+ if the budget is extremely limited and advanced features aren't essential.
  • Scenario 3: Moderate Usage, Limited Budget: Evaluate the value provided by the S21 5G compared to the significant trade-offs of the Redmi A1+, and choose accordingly.

My Choice

If I were choosing between these two phones, I would unequivocally choose the Samsung Galaxy S21 5G. While it is significantly more expensive, the vast differences in performance, display quality, camera capabilities, and overall user experience make it the far superior device. The Exynos 2100 chipset ensures smooth and responsive multitasking and gaming experiences. The vibrant AMOLED display with its 120Hz refresh rate and high brightness is a joy to use in all conditions. The advanced camera system, complete with optical zoom and a variety of recording options, would greatly enhance my photography and videography. Additionally, features like wireless charging and water resistance add convenience and longevity. Even though the battery is smaller, the faster charging and wireless features somewhat mitigate that.

The Xiaomi Redmi A1+, on the other hand, feels like a massive compromise in almost every regard. Its low-resolution display, basic chipset, and limited camera features would significantly hinder daily use, making it frustrating for someone used to higher-performing devices. It only makes sense for those with an extremely constrained budget who need just basic smartphone functionalities. For my daily usage, which includes demanding apps, gaming, and high quality media consumption, the S21 5G would provide a far superior experience. The difference in value for the price is also more appealing on the S21 5G due to the large difference in user experience.

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.