Samsung Galaxy A42 5G vs Samsung Galaxy S21 Ultra 5G - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date November 11, 2020 January 29, 2021
Release Year 2020 2021

Physical

Volume 107.31 cm³ 111.09 cm³
Screen Size to Weight Ratio 3.42 "/g 3 "/g
Weight 193 g 227 g
Height 164.4 mm 165.1 mm
Width 75.9 mm 75.6 mm
Thickness 8.6 mm 8.9 mm
Foldable Design No No
Available Colors
  • Prism Dot Black
  • Prism Dot White
  • Prism Dot Gray
  • Phantom Black
  • Phantom Silver
  • Phantom Titanium
  • Phantom Navy
  • Phantom Brown
  • Navy

Display

Screen Size 6.6 " 6.8 "
Resolution 720 x 1600 1440 x 3200
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 84.3 % 89.4 %
Pixel Density 266 PPI 515 PPI
Refresh Rate N/A 120 Hz
Typical Brightness N/A N/A
HBM Brightness N/A N/A
Peak Brightness N/A 1500 nits

Hardware

Battery Capacity per Screen Area 114.78 mAh/in² 108.13 mAh/in²
Battery Density 46.59 mAh/cm³ 45.01 mAh/cm³
Battery Capacity 5000 mAh 5000 mAh
NFC Support Yes Yes
Chipset Qualcomm SM7225 Snapdragon 750 5G (8 nm) Exynos 2100 (5 nm) - International
CPU Octa-core (2x2.2 GHz Kryo 570 & 6x1.8 GHz Kryo 570) Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International
GPU Adreno 619 Mali-G78 MP14 - International

Connectivity

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

Software

Operating System Android Android
Initial OS Version 10 11
Maximum OS Version 13 15

Comparison Summary

1. Specifications Comparison

FeatureSamsung Galaxy A42 5GSamsung Galaxy S21 Ultra 5GPractical Impact
Design
Dimensions164.4 × 75.9 × 8.6 mm, 193g165.1 × 75.6 × 8.9 mm, 227gA42 5G is lighter and slightly thinner, making it more comfortable for extended use. S21 Ultra is heavier, which may feel more premium to some.
Display
Size6.6"6.8"S21 Ultra offers a slightly larger viewing area, better for media consumption and multitasking.
Resolution720x16001440x3200S21 Ultra has a significantly sharper and more detailed display, making images and text appear clearer.
PPI266515S21 Ultra's higher pixel density results in a noticeably crisper image quality.
Refresh Rate60Hz120HzS21 Ultra offers smoother scrolling, animations, and gaming experiences.
Brightness0 nits (Spec missing)1500 nitsS21 Ultra is much better for outdoor visibility in bright sunlight (assuming the A42 is significantly lower).
ProtectionUnknownCorning Gorilla Glass VictusS21 Ultra is more resistant to scratches and drops.
Performance
ChipsetSnapdragon 750 5G (8 nm)Exynos 2100 (5 nm)S21 Ultra provides significantly faster processing speeds, better app loading, and smoother multitasking.
AnTuTu Score392,400749,000S21 Ultra offers superior performance for demanding tasks like gaming and video editing.
RAM4/6/8 GB12/16 GBS21 Ultra allows for smoother multitasking and running more apps in the background without slowdowns.
Camera
Main Camera48MP108MPS21 Ultra captures more detailed photos, especially in good lighting conditions.
Telephoto LensNoneTwo 10.8MP LensesS21 Ultra offers optical zoom capabilities for capturing distant subjects with better clarity.
Ultrawide Lens5MP12.2MPS21 Ultra captures wider and more detailed photos in ultra-wide mode.
Selfie Camera20MP44MPS21 Ultra takes higher-resolution and more detailed selfies.
Video Recording4K@30fps8K@24fps, 4K@60fpsS21 Ultra allows for higher-resolution video recording and smoother frame rates.
Battery
Capacity5000mAh5000mAhBoth phones should offer similar battery life under moderate usage.
Charging15W25WS21 Ultra charges faster, reducing downtime.
Wireless ChargingNo15WS21 Ultra offers convenient wireless charging capabilities.
Storage
Internal Storage128GB128/256/512GBS21 Ultra offers more storage options for users with large media libraries or app collections.
Expandable StorageNoNoNeither phone allows for expanding storage via microSD card.
Audio
Audio QualityBasicDolby Atmos, Stereo SpeakersS21 Ultra offers more immersive and higher quality audio experience

2. Key Differences Analysis

Samsung Galaxy A42 5G Advantages:

  • Lighter Weight: More comfortable for prolonged use.
  • Potentially Lower Price: Offers a more budget-friendly option.
  • Headphone Jack (Assumption): While not explicitly stated, many mid-range phones still include a headphone jack which is a significant advantage for users who prefer wired headphones.

Practical Implications: The A42 5G is better suited for users prioritizing comfort, affordability, and potentially wired audio.

Samsung Galaxy S21 Ultra 5G Advantages:

  • Superior Display: Higher resolution, refresh rate, and brightness provide a significantly better viewing experience.
  • Faster Performance: The more powerful chipset and greater RAM enable smoother multitasking, gaming, and overall responsiveness.
  • Better Camera System: Offers more versatile and higher-quality photo and video capabilities with telephoto lenses, higher resolution sensors, and advanced features.
  • Faster Charging and Wireless Charging: Provides more convenient and efficient charging options.
  • Better Audio Quality: Features like Dolby Atmos and stereo speakers deliver a more immersive audio experience.
  • Newer Software: Comes with a newer version of Android and has a longer software support lifespan.

Practical Implications: The S21 Ultra 5G is ideal for users who demand the best possible display, performance, camera, and overall experience.

Trade-offs:

  • The S21 Ultra 5G is heavier and more expensive.
  • Neither phone offers expandable storage.

3. User Profiles & Recommendations

Samsung Galaxy A42 5G:

  • Ideal User: Budget-conscious users who need 5G connectivity and a decent display for everyday tasks.
  • Use Cases:
    • Casual social media browsing
    • Basic photography and video recording
    • Streaming videos and music
    • Everyday communication
    • Users who prioritize a lighter phone

Samsung Galaxy S21 Ultra 5G:

  • Ideal User: Power users who demand the best possible performance, camera, and display quality.
  • Use Cases:
    • Professional photography and videography
    • Demanding mobile gaming
    • Video editing and content creation
    • Multitasking with multiple apps
    • Users who value premium features and build quality

Price-to-Value Ratio:

The A42 5G offers a better price-to-value ratio for users with basic needs, while the S21 Ultra 5G justifies its higher price with its superior performance and features for demanding users.

4. Decision Framework

Key Questions for Buyers:

  1. What is your budget? The price difference between these phones is significant.
  2. How important is camera quality to you? The S21 Ultra 5G's camera system is far superior.
  3. What are your performance needs? If you're a heavy gamer or multitasker, the S21 Ultra 5G is the better choice.

Scenario-Based Recommendations:

  • Scenario 1: Tight Budget, Basic Needs: If you're on a tight budget and primarily use your phone for basic communication and social media, the Galaxy A42 5G is a suitable option.
  • Scenario 2: Photography Enthusiast: If you love taking photos and videos and want the best possible mobile camera experience, the Galaxy S21 Ultra 5G is the clear winner.
  • Scenario 3: Mobile Gamer/Power User: If you play demanding games or use your phone for resource-intensive tasks, the Galaxy S21 Ultra 5G will provide a smoother and more enjoyable experience.

Personal Choice

If I were to choose between these two phones, I would pick the Samsung Galaxy S21 Ultra 5G. While the A42 5G is a decent budget option, the S21 Ultra 5G's superior display, performance, and camera system make it a much better choice for my needs. I often use my phone for photography, video recording, and playing graphically demanding games. The S21 Ultra 5G would provide a much better experience in all of these areas. While the price is higher, the overall value and user experience justify the cost for me.

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.