Samsung Galaxy S21 5G vs Samsung Galaxy A34 - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 March 24, 2023
Release Year 2021 2023

Physical

Volume 85.33 cm³ 103.3 cm³
Screen Size to Weight Ratio 3.67 "/g 3.32 "/g
Weight 169 g 199 g
Height 151.7 mm 161.3 mm
Width 71.2 mm 78.1 mm
Thickness 7.9 mm 8.2 mm
Foldable Design No No
Available Colors
  • Phantom White
  • Phantom Gray
  • Phantom Violet
  • Phantom Pink
  • Silver
  • Violet
  • Graphite
  • Lime

Display

Screen Size 6.2 " 6.6 "
Resolution 1080 x 2400 1080 x 2340
Aspect Ratio 20:9 19.5:9
Screen-to-Body Ratio 85.9 % 84.9 %
Pixel Density 421 PPI 390 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness N/A N/A
HBM Brightness N/A 1000 nits
Peak Brightness 1300 nits N/A

Hardware

Battery Capacity per Screen Area 104.06 mAh/in² 114.78 mAh/in²
Battery Density 46.88 mAh/cm³ 48.4 mAh/cm³
Battery Capacity 4000 mAh 5000 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Mediatek Dimensity 1080 (6 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (2x2.6 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55)
GPU Mali-G78 MP14 - International Mali-G68 MC4

Connectivity

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

Software

Operating System Android Android
Initial OS Version 11 13
Maximum OS Version 15 17

Comparison Summary

1. Specifications Comparison

FeatureSamsung Galaxy S21 5GSamsung Galaxy A34Practical Impact
Design
Launch Date2021-01-292023-03-24The A34 is a newer model, potentially offering longer software support.
Dimensions151.7 × 71.2 × 7.9 mm161.3 × 78.1 × 8.2 mmS21 is more compact and easier to handle with one hand, while the A34 is larger and may be less pocketable.
Weight169g199gThe S21 is significantly lighter, more comfortable for extended use.
Display
Size6.2"6.6"A34 provides a larger viewing area, better for media consumption and gaming.
Resolution1080x24001080x2340Both are similar, providing sharp visuals. Negligible difference in daily use.
PPI421390The S21 has slightly sharper text and images due to higher pixel density.
TechnologyAMOLEDAMOLEDBoth offer vibrant colors and deep blacks.
Refresh Rate120Hz120HzBoth offer smooth scrolling and animations.
Brightness1300 nits0 nitsThe S21's display is much brighter, providing better outdoor visibility in sunlight (The A34 is missing brightness spec)
Performance
ChipsetExynos 2100 (5 nm)Mediatek Dimensity 1080 (6 nm)The S21's chipset has a better architecture offering faster app loading and smoother multitasking.
Antutu Score749,100532,300S21 offers superior performance, noticeably faster in demanding tasks and gaming.
GPUMali-G78 MP14Mali-G68 MC4S21 has a more powerful GPU, better for gaming and graphics-intensive apps.
Camera
Standard Camera12MP (1/1.76", 1.8µm)48MP (1/2", 0.8µm)A34 captures more detailed images in good lighting, but the S21's larger sensor typically performs better in low light.
Telephoto64MPNot AvailableThe S21 offers optical zoom, providing better quality when zooming in.
Wide Angle12.2MP5MPThe S21 has a higher resolution wide-angle lens with macro functionality. The A34 has a lower resolution, dedicated ultrawide lens, and a separate depth sensor for portrait mode
Selfie10MP (1/3.2", 1.22µm)13MP (1/3.06", 1.12µm)A34 has slightly higher res and a marginally larger sensor, offering slightly better selfies.
Video8K@24fps, 4K@60fps4K@30fpsThe S21 offers higher video resolution, better for professional-grade video capture.
DxOMark (Mobile)11192S21 has better camera quality based on DxOMark scores.
Camera FeaturesOptical zoom, RAW, Phase detection autofocus (PDAF)Ultra stable videoThe S21 offers more advanced camera features, while the A34 has enhanced video stabilization.
Battery
Capacity4000mAh5000mAhA34 has a larger battery, likely to provide longer battery life.
Charging25W fast charging25W fast chargingBoth phones have the same charging speed.
Battery FeaturesWireless charging, reverse wireless chargingNoneS21 offers more versatile charging capabilities.
Software & Connectivity
OSAndroid 11 (Upgradable to 15)Android 13 (Upgradable to 17)A34 ships with a newer OS and longer support, but both have similar software experiences.
Wi-FiWi-Fi 6Wi-Fi 5S21 supports the latest Wi-Fi standard, offering faster data speeds and better stability.
Bluetooth5.05.3A34 has a newer Bluetooth version, offering better connectivity and efficiency.
Other
Internal Storage128/256 GB128/256 GBBoth offer the same storage options.
RAM8 GB6 or 8 GBBoth offer good multitasking performance, but some A34 models may have less.
Expandable StorageNoNoNeither phone supports external storage.
AudioDolby Atmos, Noise cancellation microphone, Stereo SpeakersDolby Atmos, Stereo SpeakersS21 has noise cancellation mic, better for calls and recordings.
SecurityFingerprintFingerprintBoth offer basic fingerprint security.
Screen ProtectionCorning Gorilla Glass VictusUnknownThe S21 offers better screen protection against scratches and impacts.
SensorsProximity, Compass, Barometer, Fingerprint, Accelerometer, GyroscopeUltrasonic proximity virtual, Fingerprint, Accelerometer, GyroscopeS21 includes additional environmental sensors; A34 has a virtual proximity sensor.

2. Key Differences Analysis

Samsung Galaxy S21 5G Advantages:

  • Superior Performance: The Exynos 2100 chipset and Mali-G78 GPU provide faster processing speeds and better gaming capabilities. This translates to snappier app launches and smoother multitasking.
  • Better Camera System: Offers optical zoom, 8K video recording, RAW capture, phase detection autofocus, and higher DxOMark scores, providing better image quality, especially in low light and when zooming.
  • Brighter Display: The 1300 nits display provides significantly better outdoor visibility in bright sunlight, making it easier to use in all conditions.
  • Wireless Charging: Supports convenient 15W wireless charging and reverse wireless charging, enhancing its versatility.
  • Better Build Quality: Includes Corning Gorilla Glass Victus for enhanced screen protection, and has a premium feel.
  • Additional Sensors: Offers an environmental Barometer sensor and a Compass sensor that are valuable for outdoor activities.

Samsung Galaxy A34 Advantages:

  • Newer Model: Being a newer device, it offers a more updated design, along with the potential for longer software and security updates.
  • Larger Battery: The 5000mAh battery provides extended battery life, suitable for users who spend long hours away from a charger.
  • Larger Display: The 6.6" display offers a larger viewing area for consuming content and is more immersive for gamers.
  • Newer Bluetooth: Bluetooth 5.3 offers improved connectivity, and features LDAC support for higher quality audio.
  • Lower Cost: Generally available at a more affordable price point than the S21, offering better value for users on a budget.

Significant Trade-offs:

  • The S21 sacrifices battery life for performance, whereas the A34 prioritizes battery longevity over raw power.
  • The A34’s camera performance lags behind the S21, especially in low-light conditions and video quality.
  • The S21, while smaller, comes with wireless charging, which is missing on the A34.
  • The S21 is more compact and premium, whereas the A34 is larger and has a more budget-oriented design.
  • The display of the A34 has an unknown brightness specification. This is a big unknown when comparing these phones.

3. User Profiles & Recommendations

Samsung Galaxy S21 5G:

  • Ideal User: Power users who prioritize performance and camera quality, and who appreciate a compact design with advanced features like wireless charging.
  • Use Cases:
    • Professional Photography/Videography: Capturing high-resolution images and 8K videos, using optical zoom, and utilizing RAW image support.
    • Gaming Enthusiasts: Playing graphically demanding games with smooth frame rates and no stuttering.
    • Outdoor Use: Viewing the screen clearly in bright sunlight.
    • Multitasking: Running multiple apps simultaneously and switching between them seamlessly.
    • Users who want the extra features: Wireless charging, noise cancellation microphone.
  • Value: Offers better performance, camera, display and additional features for a higher price.

Samsung Galaxy A34:

  • Ideal User: Budget-conscious users who value battery life and screen size, and who are content with good everyday performance.
  • Use Cases:
    • Media Consumption: Watching videos and browsing social media on a large screen with good colors and contrast.
    • Casual Gaming: Playing less demanding games with good battery life.
    • Everyday Tasks: Using apps for messaging, emails, browsing, and other basic tasks.
    • Long Battery Life: Spending extended periods away from a charger without worrying about running out of power.
  • Value: Offers good value for the price with a large display, long battery life, and decent performance for most users.

4. Decision Framework

Key Questions to Consider:

  1. What is your budget? The S21 is often more expensive than the A34.
  2. Do you prioritize camera quality and performance over battery life? The S21 is superior in this aspect.
  3. Do you need a larger screen or wireless charging? The A34 has a larger display, but no wireless charging.

Scenario-Based Recommendations:

  • Scenario 1: Power User/Creator: If you often edit photos and videos, play demanding games, and need a phone with a high-quality camera, the Samsung Galaxy S21 5G is a better choice.
  • Scenario 2: Budget-Conscious/Casual User: If you mainly use your phone for media consumption, basic apps, and want a long-lasting battery, the Samsung Galaxy A34 will save you money and still meet your needs.
  • Scenario 3: Outdoor/Heavy Use: If you frequently use your phone outdoors and require a bright display and reliable performance along with wireless charging, the Samsung Galaxy S21 5G would be better.
  • Scenario 4: Value Focused User: If you want a good, modern smartphone with a focus on price to performance the Samsung Galaxy A34 would be the best choice.

My Choice:

If I were personally choosing, I would lean towards the Samsung Galaxy S21 5G, despite it being the older phone. My reasons are primarily around its superior display brightness (which is critical for outdoor use), superior camera performance and features, and its smaller size. I'm willing to trade battery life for these features. The S21’s higher performance capabilities also make it better for general use. While the A34 is newer and has a larger battery, for me the better display, more powerful chipset, and more feature-rich camera system of the S21 are more important.

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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Bridging technical complexity with engaging, accessible narratives.