Samsung Galaxy S21 5G vs Samsung Galaxy A05 - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 October 15, 2023
Release Year 2021 2023

Physical

Volume 85.33 cm³ 116.16 cm³
Screen Size to Weight Ratio 3.67 "/g 3.44 "/g
Weight 169 g 195 g
Height 151.7 mm 168.8 mm
Width 71.2 mm 78.2 mm
Thickness 7.9 mm 8.8 mm
Foldable Design No No
Available Colors
  • Phantom White
  • Phantom Gray
  • Phantom Violet
  • Phantom Pink
  • Silver
  • Black
  • Light Green

Display

Screen Size 6.2 " 6.7 "
Resolution 1080 x 2400 720 x 1600
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 85.9 % 82.1 %
Pixel Density 421 PPI 262 PPI
Refresh Rate 120 Hz N/A
Typical Brightness N/A N/A
HBM Brightness N/A N/A
Peak Brightness 1300 nits N/A

Hardware

Battery Capacity per Screen Area 104.06 mAh/in² 111.38 mAh/in²
Battery Density 46.88 mAh/cm³ 43.04 mAh/cm³
Battery Capacity 4000 mAh 5000 mAh
NFC Support Yes No
Chipset Exynos 2100 (5 nm) - International Mediatek 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

Smartphone Comparison: Samsung Galaxy S21 5G vs. Samsung Galaxy A05

1. Specifications Comparison

FeatureSamsung Galaxy S21 5GSamsung Galaxy A05Practical Impact
Design
Dimensions151.7 x 71.2 x 7.9 mm168.8 x 78.2 x 8.8 mmA05 is significantly larger and thicker, impacting pocketability and single-handed use. S21 5G is more compact and easier to handle.
Weight169g195gS21 5G is noticeably lighter, making it more comfortable for extended holding and easier to carry. The A05 feels heavier in comparison.
Display
Size6.2"6.7"A05 offers a larger viewing area for media consumption, but the S21 5G is more compact for everyday handling.
Resolution1080 x 2400720 x 1600S21 5G's display is significantly sharper, resulting in clearer text and images. A05 may appear less crisp, especially for detailed content.
Pixel Density421 PPI262 PPIThe S21 5G provides much sharper visuals for finer details. Text and images appear less pixelated compared to A05.
TechnologyAMOLEDPLS LCDS21 5G offers better contrast, deeper blacks, and more vibrant colors, leading to a more visually engaging experience.
Refresh Rate120Hz60HzS21 5G has smoother scrolling and animations, enhancing user interface fluidity and gaming responsiveness.
Brightness1300 nits0 nitsS21 5G is much more visible in direct sunlight. The A05's brightness data is missing, but it can be assumed that the S21 5G offers a much brighter screen.
Performance
ChipsetExynos 2100 (5nm)Mediatek Helio G85 (12nm)S21 5G provides much faster app loading, smoother multitasking, and more demanding gaming experiences. A05 is significantly slower in comparison.
AnTuTu Score749,100225,154S21 5G offers superior overall performance, making the S21 5G smoother and faster for demanding tasks and more future-proof.
GPUMali-G78 MP14Mali-G52 MC2S21 5G has a more powerful GPU which translates to smoother frame rates in graphically intensive games and better app performance.
Camera
Main Camera12MP50MPA05 offers a higher resolution sensor, which can capture more detail in well-lit conditions but might not perform well in low light because of other spec differences.
Telephoto/Portrait64MPN/AS21 5G has a dedicated telephoto lens for zoom and portrait shots, improving versatility and creative options. A05 lacks this feature.
Selfie Camera10MP8MPS21 5G captures slightly higher resolution selfies. Both phones will give similar quality selfie performance, though the difference is marginal.
Wide/Macro Camera12.2MPN/AS21 5G has a dedicated ultrawide lens for expansive shots and a macro lens for close-up photography. A05 lacks this feature.
VideoUp to 8KUp to 1080pS21 5G can record professional-grade videos with higher resolution, more detail and supports higher frame rates for smoother footage and includes slow-motion and more features.
DxOMark (Mobile)111 (main score)N/AS21 5G has been tested for camera quality with a score of 111. A05 has no official camera score, indicating a lower camera performance compared to S21 5G
DxOMark (Selfie)132 (main score)N/AS21 5G has been tested for selfie camera quality with a score of 132. A05 has no official camera score, indicating a lower selfie performance compared to S21 5G
OISYesNoS21 5G offers optical image stabilization for smoother videos and clearer photos, especially in low light.
Battery
Capacity4000mAh5000mAhA05 has a significantly larger battery, likely resulting in longer battery life. However, S21 5G might have better optimized software that results in similar battery performance.
Charging25W fast25W fastBoth phones support 25W fast charging.
FeaturesWireless Charging, Reverse Charging, No chargerNo wireless charging, No Reverse ChargingS21 5G has more charging features than A05. The A05 does not offer wireless or reverse charging. S21 5G does not come with a charger in the box.
Software
OSAndroid 11 (upgradable to 15)Android 13A05 has a more recent Android version out of the box. However, the S21 5G is planned to be upgraded to version 15, providing a future-proof software experience.
Connectivity
Wi-FiWi-Fi 6Wi-Fi 5S21 5G supports faster Wi-Fi speeds and more stable connections with Wi-Fi 6.
Bluetooth5.05.3A05 uses a newer Bluetooth version for potentially better and more efficient connections.
GPSMore systemsStandard GPSS21 5G supports more GPS systems for better location accuracy. S21 5G can also find location quicker with L1+L5.
Storage
Internal128/256GB64/128GBS21 5G offers more storage options, especially the 256GB variant which is not available for A05.
RAM8GB4/6GBS21 5G comes standard with 8 GB of RAM, which is better for smoother performance with multitasking, compared to the A05.
ExpandableNoNoNeither phone supports expandable storage, making the choice of internal storage crucial.
Audio
QualityDolby Atmos, Stereo speakers, Noise cancellationBasic audio featuresThe S21 5G offers superior audio quality with support for Dolby Atmos, stereo speakers, and noise cancellation. The A05 has basic audio features which offer no additional audio features.
Security
FeaturesFingerprint sensorBasic securityThe S21 5G has a fingerprint sensor for biometric security. The A05 does not come with a fingerprint sensor.
Build Quality
ProtectionCorning Gorilla Glass VictusUnknownS21 5G has better screen protection against scratches and drops with Corning Gorilla Glass Victus protection. A05 does not include a screen protection spec.
Sensors
SensorsFingerprint, Compass, Gyroscope, BarometerAccelerometer, ProximityThe S21 5G has a more comprehensive set of sensors making it useful for more advanced apps and features including better gaming experience.

2. Key Differences Analysis

Samsung Galaxy S21 5G Advantages:

  • Superior Display: Significantly sharper and more vibrant AMOLED display with a 120Hz refresh rate, offering a much better viewing experience.
  • Significantly Higher Performance: The Exynos 2100 chipset provides much faster processing speeds, smoother multitasking, and better gaming performance.
  • Advanced Camera System: Offers a triple camera setup with dedicated telephoto and ultrawide lenses, as well as higher video quality, OIS and many camera features.
  • Premium Audio Quality: Features Dolby Atmos, stereo speakers, and a noise-canceling microphone for superior audio experience.
  • More Charging Features: Supports 15W wireless charging and reverse wireless charging.
  • Better Build Quality: Includes Corning Gorilla Glass Victus for screen protection and additional environmental sensors.
  • More comprehensive Sensors: Includes a Fingerprint sensor, Gyroscope and Barometer

Practical Implications: The S21 5G is a flagship device designed for users who prioritize high performance, display quality, and advanced features. It's better for gaming, media consumption, photography, and general demanding tasks.

Samsung Galaxy A05 Advantages:

  • Larger Battery: Offers a larger 5000mAh battery for longer battery life between charges.
  • More Recent Android OS: Ships with Android 13 out of the box, although it is not clear if there is a planned upgrade, while S21 5G is expected to be upgraded to Android 15.
  • Newer Bluetooth: Features a more recent Bluetooth version
  • Lower Price: A05 is an entry-level phone priced significantly lower compared to the S21 5G

Practical Implications: The A05 is a budget-friendly device focused on affordability and long battery life. It is suitable for basic use, such as browsing, calling, and casual social media, and users who prioritize battery.

Trade-offs:

  • S21 5G: Higher cost and smaller battery life, may not be the best option for those on a budget or those who require an extended battery life.
  • A05: Significantly lower performance, inferior display, and less capable camera system may not be the best for those who are into gaming, content consumption or photography.

3. User Profiles & Recommendations

Samsung Galaxy S21 5G Ideal Users:

  • Power Users: Those who need high performance for multitasking, gaming, and demanding applications.
  • Media Enthusiasts: Users who prioritize a high-quality display for watching videos and browsing photos.
  • Photography Lovers: Users who want a versatile camera system with good low-light performance and advanced features.
  • Tech Enthusiasts: Those who want the latest features such as wireless charging, and better build quality.

Use Cases:

  • Gaming: Smooth frame rates and quick app load times
  • Professional Photography: Capturing high-resolution images and videos with OIS
  • Content Creation: Editing photos and videos on the go
  • Mobile Working: Smooth multitasking for office and creative tasks

Samsung Galaxy A05 Ideal Users:

  • Budget-Conscious Buyers: Those who want an affordable smartphone with basic functionality.
  • Casual Users: Individuals who primarily use their phone for calls, texts, and light browsing.
  • Battery-Life Focused: Users who prioritize long battery life and don’t want to charge their phone often.

Use Cases:

  • Basic Communication: Calling, texting, and social media browsing
  • Casual Media Consumption: Watching videos and listening to music occasionally
  • Light Gaming: Simple and less demanding mobile games

Price-to-Value Ratio: The S21 5G offers a much higher performance and feature set for its price. However, the A05 is significantly cheaper, making it an attractive option for users on a tight budget. It really depends on what the user requires from a phone.

4. Decision Framework

Key Questions for Buyers:

  1. Budget: What is your budget? This will be the most important factor as one phone is significantly more affordable than the other.
  2. Primary Use: What do you use your phone for most often? Gaming/Photography/Content Creation (S21) vs Calling/Social Media (A05)
  3. Feature Priorities: How important is performance, display quality, camera capabilities, and battery life to you?

Scenario-Based Recommendations:

  • Scenario 1: High-Performance/Flagship User If you want the best performance, display, and camera and are willing to pay a premium, the Samsung Galaxy S21 5G is the better choice.
  • Scenario 2: Budget User: If you are looking for an affordable device with basic functionality and a large battery, the Samsung Galaxy A05 is a more suitable option.
  • Scenario 3: Prioritizing Battery Life: If you value battery life over everything else, then the Samsung Galaxy A05 is the more suitable phone as it has a much larger battery than the S21 5G

Personal Choice

If I were choosing between these two phones, I would choose the Samsung Galaxy S21 5G.

Here's why: While I acknowledge the A05 offers a larger battery and lower price, I value the superior performance, display quality, and camera capabilities of the S21 5G. As someone who uses my phone for more than just basic tasks, the S21 5G's flagship-level features would significantly enhance my overall user experience. The S21 5G is better for gaming, photography, and content consumption, which are things that I often do with my phone. Although battery life is always a priority, I am willing to compromise on the larger battery as the S21 5G offers a very good battery life with the optimized software and the other features that come with the S21 5G are worth the trade-off. Furthermore, the quality of the screen and the higher refresh rate will also give me a much better overall experience. The S21 5G also has a better build quality with superior screen protection. I also do not like the larger size and thickness of the A05.

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.