Samsung Galaxy S21 Ultra 5G vs OnePlus 10T - Detailed Phone Comparison

Detailed Comparison

Specification
OnePlus 10T
OnePlus 10T
Oneplus

General

Launch Date January 29, 2021 August 6, 2022
Release Year 2021 2022

Physical

Volume 111.09 cm³ 108.15 cm³
Screen Size to Weight Ratio 3 "/g 3.28 "/g
Weight 227 g 204 g
Height 165.1 mm 163 mm
Width 75.6 mm 75.4 mm
Thickness 8.9 mm 8.8 mm
Foldable Design No No
Available Colors
  • Phantom Black
  • Phantom Silver
  • Phantom Titanium
  • Phantom Navy
  • Phantom Brown
  • Navy
  • Moonstone Black
  • Jade Green

Display

Screen Size 6.8 " 6.7 "
Resolution 1440 x 3200 1080 x 2412
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 89.4 % 87.9 %
Pixel Density 515 PPI 394 PPI
Refresh Rate 120 Hz 120 Hz
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 106.93 mAh/in²
Battery Density 45.01 mAh/cm³ 44.38 mAh/cm³
Battery Capacity 5000 mAh 4800 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510)
GPU Mali-G78 MP14 - International Adreno 730

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 12
Maximum OS Version 15

Comparison Summary

1. Specifications Comparison

Design

FeatureSamsung Galaxy S21 Ultra 5GOnePlus 10TPractical Impact
Dimensions165.1 × 75.6 × 8.9 mm163 × 75.4 × 8.8 mmThe S21 Ultra is slightly taller, but both phones are similar in width and thickness; the difference is not noticeable in daily use.
Weight227g204gThe OnePlus 10T is significantly lighter, making it more comfortable for extended single-handed use and long periods of holding the device.

Display

FeatureSamsung Galaxy S21 Ultra 5GOnePlus 10TPractical Impact
Size6.8"6.7"Minimal difference in size; both offer a large, immersive viewing experience.
Resolution1440 x 32001080 x 2412The S21 Ultra has a significantly sharper display, which is especially noticeable when viewing high-resolution photos, videos, or reading small text.
PPI515394S21 Ultra offers visibly crisper text and images due to higher pixel density.
TechnologyAMOLEDAMOLEDBoth phones offer vibrant colors, deep blacks, and excellent contrast.
Refresh Rate120Hz120HzBoth provide smooth scrolling and animations, making the user interface and compatible content feel fluid.
Brightness1500 nits0 nitsThe S21 Ultra's higher peak brightness significantly improves outdoor visibility in bright sunlight, making the screen much more readable.

Performance

FeatureSamsung Galaxy S21 Ultra 5GOnePlus 10TPractical Impact
ChipsetExynos 2100 (5 nm)Qualcomm Snapdragon 8+ Gen 1 (4 nm)The OnePlus 10T's newer chipset offers a substantial performance boost, resulting in faster app loading times, smoother multitasking, and better gaming experiences.
AnTuTu Score749,0001,165,433The OnePlus 10T has significantly higher performance in benchmarks, which indicates a better overall and faster user experience.
GPUMali-G78 MP14Adreno 730The Adreno 730 in the OnePlus 10T provides better graphics performance, beneficial for gaming and demanding graphic intensive tasks.

Battery

FeatureSamsung Galaxy S21 Ultra 5GOnePlus 10TPractical Impact
Capacity5000mAh4800mAhThe S21 Ultra has a marginally larger battery that could lead to slightly longer usage.
Charging25W Fast Charging150W Fast ChargingOnePlus 10T charges much faster, offering a full charge in a fraction of the time compared to the S21 Ultra, significantly improving the user experience.
FeaturesReverse charging, Wireless charging 15W, Reverse wireless charging 9W2*2350mAh dual-cellS21 Ultra offers more flexible charging options including wireless charging and reverse wireless charging for other devices; OnePlus 10T uses a dual-cell design for faster charging but lacks wireless capabilities.

Camera

FeatureSamsung Galaxy S21 Ultra 5GOnePlus 10TPractical Impact
Standard Camera108MP, f/1.8, 1/1.33" sensor, 0.80µm pixels50MP, f/1.8, 1/1.56" sensor, 1.00µm pixelsS21 Ultra offers higher resolution photos and a slightly larger sensor, potentially providing more detail and better low-light performance. The larger pixel size of the 10T can compensate for the smaller sensor size.
Telephoto + Portrait Camera10.8MP, f/2.4, 1/2.65" sensor, 1.22µm pixelsNot availableS21 Ultra offers dedicated zoom capabilities and portrait mode features; the OnePlus 10T relies on digital zoom.
Selfie Camera44MP, f/2.2, 1/2.65" sensor, 0.70µm pixels16MP, f/2.46, 1/3.1" sensor, 1.00µm pixelsS21 Ultra provides higher resolution selfies with a wider aperture and larger sensor size, leading to potentially better detail and low-light performance.
Telephoto Lens10.8MP, f/4.9, 1/2.65" sensor, 1.22µm pixelsNot availableS21 Ultra provides additional optical zoom capabilities not present in the OnePlus 10T.
Wide Angle LensNot available8MP, f/2.2, 1/4" sensor, 1.12µm pixelsThe OnePlus 10T provides a wide-angle perspective, while the S21 Ultra relies on its primary lens for wide shots.
Macro LensNot available2MP, f/2.4, 1/5" sensor, 1.75µm pixelsOnePlus 10T offers a dedicated macro lens for close-up shots, a feature the S21 Ultra lacks.
Wide Angle + Macro12.2MP, f/2.2, 1/2.55" sensor, 1.40µm pixelsNot availableS21 Ultra offers this additional feature.
Video RecordingUp to 8K@24fps with HDR, EIS, Stereo SoundUp to 4K@60fps with EISS21 Ultra offers higher resolution video recording capabilities, suitable for professional-grade video content.
Slow Motion960 fps480 fpsS21 Ultra offers significantly higher slow motion recording capabilities.
DXOMarkMobile: 115, Photo: 121, Video: 100; Selfie: 135, Photo: 133, Video: 140Not availableS21 Ultra has been rigorously tested by DXOMark, indicating reliable overall photo and video quality.

2. Key Differences Analysis

Samsung Galaxy S21 Ultra 5G Advantages:

  • Superior Display: Higher resolution and brightness result in sharper visuals, improved readability, and better outdoor performance.
  • More Versatile Camera System: Offers a dedicated telephoto lens, an additional telephoto+portrait lens and a wide angle + macro lens, providing more zoom versatility and capabilities. Also, significantly higher-resolution selfie camera.
  • Wireless Charging and Reverse Charging: Offers the convenience of wireless charging and reverse wireless charging.
  • Comprehensive DXOMark Rating: Provides tested and reliable camera performance metrics.
  • Better build quality: Corning Gorilla Glass Victus on the display is more scratch resistant.
  • Advanced Audio Features: Dolby Atmos and Hi-Res Audio offer an improved audio experience.

OnePlus 10T Advantages:

  • Significantly Faster Performance: The Snapdragon 8+ Gen 1 chipset results in much better performance, more suitable for heavy multitasking and gaming.
  • Ultra-Fast Charging: 150W charging is exceptionally fast, substantially reducing downtime.
  • Lighter Build: More comfortable for prolonged use.
  • Dedicated Wide Angle and Macro Lenses: Adds versatility to photography, which the S21 Ultra lacks.
  • Newer Software: Ships with a newer Android version.

Trade-offs:

  • Samsung Galaxy S21 Ultra 5G: Sacrifices raw performance and charging speed for a superior display, more versatile camera system, and better build quality.
  • OnePlus 10T: Trades camera versatility and display quality for higher performance, faster charging, and a lighter design.

3. User Profiles & Recommendations

Ideal User for Samsung Galaxy S21 Ultra 5G:

  • Photography Enthusiasts: Users who prioritize camera versatility, zoom capabilities, and high-quality images, especially those interested in 8K video.
  • Media Consumers: Users who value a top-tier display experience for watching videos and browsing, both indoors and out.
  • Power Users Seeking Premium Features: Individuals who appreciate wireless charging, reverse charging, and advanced audio features like Dolby Atmos.

Use Cases:

  • Professional Photography & Videography: High-resolution images and 8K video recording are ideal for content creation.
  • Outdoor Usage: The brighter display excels in sunny conditions, ensuring excellent readability.
  • Long-term Reliability: High build quality and premium materials mean that the device will last longer.

Ideal User for OnePlus 10T:

  • Gamers: Users who prioritize raw performance and smooth gaming experiences.
  • Users on the Go: Those who need quick charging and a lighter device for ease of use and portability.
  • Price-Conscious Performance Seekers: Users who want top-tier performance at a more competitive price point.

Use Cases:

  • Mobile Gaming: The powerful chipset and fast refresh rate are well-suited for gaming.
  • Heavy Multitasking: The device handles numerous apps and demanding tasks without slowdown.
  • Quick Top-ups: The 150W fast charging is ideal for busy individuals.

4. Decision Framework

Here are three key questions to consider:

  1. What's more important: screen quality or performance?

    • If screen quality is paramount, choose the S21 Ultra.
    • If performance is critical, choose the OnePlus 10T.
  2. Do you need advanced camera features or fast charging?

    • If versatility with zoom lenses is essential, choose the S21 Ultra.
    • If ultra-fast charging is a priority, choose the OnePlus 10T.
  3. Are wireless charging and reverse charging important to you?

    • If wireless charging is desired, choose the S21 Ultra.
    • If you can live without wireless charging, the OnePlus 10T's fast charging can compensate.

Scenario-Based Recommendations:

  • Scenario 1: Frequent Traveler / Outdoor Photographer - If you will be taking many pictures outdoors in bright light and need a reliable camera to capture details with zoom, the Samsung Galaxy S21 Ultra is a better choice for its superior display, versatile camera, and reliable performance.
  • Scenario 2: Avid Mobile Gamer - If you will be gaming frequently, the OnePlus 10T is a clear winner due to its superior performance.
  • Scenario 3: Daily Use / Fast Top-ups Needed - If you use your device heavily for tasks and require frequent quick charges, the OnePlus 10T's 150W fast charging is a major advantage.

My Choice

Given my personal priorities, I would choose the Samsung Galaxy S21 Ultra 5G. While the OnePlus 10T offers a compelling combination of price and performance, the S21 Ultra provides a more complete, premium experience that aligns with my needs.

Here's why:

  1. Display Quality: I value a great display for media consumption, reading, and overall enjoyment. The S21 Ultra's higher resolution and peak brightness make a tangible difference, particularly outdoors.
  2. Camera Versatility: I enjoy mobile photography and having a wide array of lenses is crucial. The S21 Ultra's telephoto capabilities and superior selfie camera offer a lot more flexibility. The better rated video recording and quality, especially in slow motion and higher resolutions are also preferred.
  3. Premium Features: Wireless charging, reverse charging and the premium build quality are features I utilize and appreciate.
  4. Long-term Usage: The higher build quality, premium materials, and better protection will mean that the device will be usable for longer, before it needs to be replaced.

Although the OnePlus 10T's blazing-fast charging and performance are highly attractive, the S21 Ultra’s superior display and versatile camera system with more options and a better rated performance are more important to 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.

Key Strengths:

  • Mobile technology analysis
  • Digital media communication
  • Technical storytelling
  • User-centric technology insights

Bridging technical complexity with engaging, accessible narratives.