Samsung Galaxy S21 Ultra 5G vs Sony Xperia 10 III - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 June 11, 2021
Release Year 2021 2021

Physical

Volume 111.09 cm³ 86.92 cm³
Screen Size to Weight Ratio 3 "/g 3.55 "/g
Weight 227 g 169 g
Height 165.1 mm 154 mm
Width 75.6 mm 68 mm
Thickness 8.9 mm 8.3 mm
Foldable Design No No
Available Colors
  • Phantom Black
  • Phantom Silver
  • Phantom Titanium
  • Phantom Navy
  • Phantom Brown
  • Navy
  • Black
  • Blue
  • White
  • Pink

Display

Screen Size 6.8 " 6 "
Resolution 1440 x 3200 1080 x 2520
Aspect Ratio 20:9 21:9
Screen-to-Body Ratio 89.4 % 80.3 %
Pixel Density 515 PPI 457 PPI
Refresh Rate 120 Hz N/A
Typical Brightness N/A N/A
HBM Brightness N/A N/A
Peak Brightness 1500 nits N/A

Hardware

Battery Capacity per Screen Area 108.13 mAh/in² 125.00 mAh/in²
Battery Density 45.01 mAh/cm³ 51.77 mAh/cm³
Battery Capacity 5000 mAh 4500 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Qualcomm SM6350 Snapdragon 690 5G (8 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 Kryo 560 Gold & 6x1.7 GHz Kryo 560 Silver)
GPU Mali-G78 MP14 - International Adreno 619

Connectivity

USB Version 3.2 3.1
OTG Support 1 1
DisplayPort
DisplayPort Version N/A N/A
USB Features USB Type-C 3.2, OTG USB Type-C 3.1, OTG

Software

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

Comparison Summary

1. Specifications Comparison

FeatureSamsung Galaxy S21 Ultra 5GSony Xperia 10 IIIPractical Impact
Design
Dimensions165.1 x 75.6 x 8.9 mm154 x 68 x 8.3 mmS21 Ultra is significantly larger and bulkier, making the Xperia 10 III more pocketable and comfortable for smaller hands.
Weight227g169gXperia 10 III is noticeably lighter, better for extended use and one-handed operation.
Display
Size6.8"6"S21 Ultra offers a much larger viewing area, ideal for media consumption and multitasking. Xperia 10 III is more compact.
Resolution1440x32001080x2520S21 Ultra provides sharper and more detailed visuals, superior for reading, gaming and detailed image viewing.
Pixel Density515 PPI457 PPIS21 Ultra's higher pixel density results in crisper text and images, less eye strain during prolonged use.
TechnologyAMOLEDOLEDBoth offer vibrant colors and deep blacks, but AMOLED generally performs better under different lighting conditions.
Refresh Rate120Hz60HzS21 Ultra's 120Hz refresh rate provides smoother scrolling and animations, making the user interface feel more responsive.
Brightness1500 nits0 nitsS21 Ultra is significantly brighter, offering vastly superior visibility under direct sunlight. Xperia 10 III brightness is not specified.
Performance
ChipsetExynos 2100 (5 nm)Snapdragon 690 5G (8 nm)S21 Ultra's flagship chipset offers significantly faster performance for demanding tasks, including gaming and video editing.
AnTuTu Score749,000275,000S21 Ultra demonstrates vastly superior performance, ensuring smoother app loading and enhanced multitasking.
GPUMali-G78 MP14Adreno 619S21 Ultra's superior GPU offers better graphics performance, suitable for intensive gaming.
Camera
Main Camera108MP, f/1.812MP, f/1.8S21 Ultra captures much more detailed images with its higher resolution sensor, better for large prints and cropping.
Telephoto Camera10.8MP, f/2.4 & 10.8MP, f/4.98MP f/2.4S21 Ultra offers dual telephoto lenses, resulting in better zoom capabilities and optical image quality.
Selfie Camera44MP, f/2.28MP, f/2.0S21 Ultra captures selfies with greater detail and potentially better dynamic range. Xperia 10 III has slightly wider aperture for better low-light.
Wide Angle Lens12.2MP, f/2.28MP, f/2.2S21 Ultra offers a wide angle lens with macro capabilities. Sony Xperia 10 III does have one.
Video RecordingUp to 8K@24fpsUp to 4K@30fpsS21 Ultra allows recording in much higher 8K resolution, providing a significantly better video recording experience.
DXOMark (Mobile)115 (Overall)Not AvailableS21 Ultra scores highly for its camera performance, which is not tested for Sony Xperia 10 III.
DXOMark (Selfie)135 (Overall)Not AvailableS21 Ultra's selfie camera performs far superior, and is not tested for Sony Xperia 10 III.
Battery
Capacity5000mAh4500mAhS21 Ultra's larger battery offers slightly longer battery life, important for heavy users.
Charging25W18WS21 Ultra charges faster, allowing users to get back to full power more quickly.
FeaturesWireless, ReverseNon-removableS21 Ultra offers wireless charging and reverse charging, providing more convenient power management.
Software
OSAndroid 11 (up to 15)Android 11 (up to 13)S21 Ultra supports more Android updates, offering access to newer features and security patches for a longer period.

2. Key Differences Analysis

Samsung Galaxy S21 Ultra 5G Advantages:

  • Significantly Higher Performance: The Exynos 2100 chipset and higher RAM make it much faster and smoother for demanding applications and multitasking.
  • Superior Display: Higher resolution, pixel density, refresh rate, and brightness offer a vastly better visual experience, especially outdoors.
  • Much More Versatile Camera: Superior image quality, dual telephoto lenses, wider recording capabilities, and more features offer greater flexibility.
  • Larger Battery and Faster Charging: Provides longer usage and faster recharge times.
  • Advanced Features: Wireless charging, reverse wireless charging, and more comprehensive connectivity options.

Sony Xperia 10 III Advantages:

  • More Compact and Lighter Design: Easier to handle, pocketable, and comfortable for prolonged use.
  • Better Battery Life (Potentially): Smaller screen size and lower power processor may result in better battery life in real-world conditions.
  • Lower Price Point: Likely to be more affordable.
  • Side-mounted Fingerprint Sensor: Can be considered more convenient by some users.

Trade-offs:

  • S21 Ultra: Significantly larger and heavier, higher price point, shorter battery life due to higher specs
  • Xperia 10 III: Lower performance, less impressive camera and display, fewer features, slower charging speed.

3. User Profiles & Recommendations

Samsung Galaxy S21 Ultra 5G Ideal Users:

  • Power Users: Those who demand the best performance for gaming, multitasking, and resource-intensive apps.
  • Photography Enthusiasts: Users who prioritize camera quality, zoom capabilities, and creative control.
  • Media Consumers: Individuals who enjoy watching videos, playing games, and browsing content on a large, high-quality display.
  • Professionals: Users who need a reliable and powerful device for work, with features like wireless charging, reverse charging, and top-tier connectivity.

Specific Use Cases for S21 Ultra:

  • High-end mobile gaming: Graphics-intensive games run smoothly with the powerful chipset and high refresh rate display.
  • Professional Photography/Videography: Capturing detailed images and videos with advanced camera features for social media and professional use.
  • Extensive multitasking: Seamless switching between multiple apps with 12GB/16GB of RAM.
  • Outdoor navigation and activities: Bright display remains usable even under direct sunlight.

Sony Xperia 10 III Ideal Users:

  • Budget-Conscious Buyers: Individuals looking for a reliable smartphone without breaking the bank.
  • Users Prioritizing Portability and Comfort: Those who value a compact and lightweight device for comfortable use.
  • Light Smartphone Users: People who primarily use their phone for basic tasks like calls, messaging, and casual browsing.
  • Users who prefer a less bulky device: Those who dislike the feel of large and heavy smartphones.

Specific Use Cases for Xperia 10 III:

  • Everyday communication: Making calls, sending messages, browsing the web, and using social media.
  • E-book reading: The compact form factor and battery life is great for long reading sessions.
  • Basic photo capture: Taking pictures and videos for casual sharing.
  • Travel: Its light weight makes it easy to carry around all day.

Price-to-Value Ratio:

  • S21 Ultra: While expensive, it offers a flagship experience with cutting-edge features and performance. It represents value for power users who demand the best.
  • Xperia 10 III: It's more affordable and represents value for budget-conscious buyers who prioritize the essentials.

4. Decision Framework

Key Questions for Buyers:

  1. What is your budget? The S21 Ultra is significantly more expensive than the Xperia 10 III.
  2. What are your primary use cases? Do you need top-tier performance, or are basic smartphone features sufficient?
  3. How important is portability? Do you prefer a smaller, more comfortable phone or are you fine with a larger, heavier one?

Scenario-Based Recommendations:

  • Scenario 1: Power user needing top performance and camera features. Choose the Samsung Galaxy S21 Ultra 5G.
  • Scenario 2: Budget-conscious user looking for a compact phone for basic tasks. Choose the Sony Xperia 10 III.
  • Scenario 3: User who values portability, a good display and battery life, but isn't a heavy user. Consider the Sony Xperia 10 III if you are comfortable with the lower performance. If performance is important, consider another phone.

My Choice

If I were choosing between these two phones, I would select the Samsung Galaxy S21 Ultra 5G. While the Sony Xperia 10 III is more compact and lighter, my use case requires the high-performance capabilities offered by the S21 Ultra. The superior display quality, significantly better camera system (with its versatile zoom capabilities), faster charging, and overall more feature-rich experience make it the better choice for me. While it comes at a higher cost, the performance, advanced features, and premium quality justify the expense in my usage scenarios. For professional purposes, media consumption and high-end gaming, the S21 Ultra is far more capable and represents the best value for my particular use case.

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.