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

Detailed Comparison

Specification

General

Launch Date October 13, 2020 January 29, 2021
Release Year 2020 2021

Physical

Volume 117.31 cm³ 111.09 cm³
Screen Size to Weight Ratio 3.09 "/g 3 "/g
Weight 216 g 227 g
Height 165.1 mm 165.1 mm
Width 76.4 mm 75.6 mm
Thickness 9.3 mm 8.9 mm
Foldable Design No No
Available Colors
  • Cosmic Black
  • Lunar Silver
  • Phantom Black
  • Phantom Silver
  • Phantom Titanium
  • Phantom Navy
  • Phantom Brown
  • Navy

Display

Screen Size 6.67 " 6.8 "
Resolution 1080 x 2400 1440 x 3200
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 85.2 % 89.4 %
Pixel Density 395 PPI 515 PPI
Refresh Rate 144 Hz 120 Hz
Typical Brightness 500 nits N/A
HBM Brightness N/A N/A
Peak Brightness 650 nits 1500 nits

Hardware

Battery Capacity per Screen Area 112.39 mAh/in² 108.13 mAh/in²
Battery Density 42.62 mAh/cm³ 45.01 mAh/cm³
Battery Capacity 5000 mAh 5000 mAh
NFC Support Yes Yes
Chipset Qualcomm SM8250 Snapdragon 865 5G (7 nm+) Exynos 2100 (5 nm) - International
CPU Octa-core (1x2.84 GHz Cortex-A77 & 3x2.42 GHz Cortex-A77 & 4x1.80 GHz Cortex-A55) Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International
GPU Adreno 650 Mali-G78 MP14 - International

Connectivity

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

Software

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

Comparison Summary

1. Specifications Comparison

Design

FeatureXiaomi Mi 10T 5GSamsung Galaxy S21 Ultra 5GPractical Impact
Dimensions165.1 × 76.4 × 9.3 mm165.1 × 75.6 × 8.9 mmS21 Ultra is slightly thinner, potentially making it marginally more comfortable to hold. The difference in thickness is unlikely to be noticeable in most use cases.
Weight216g227gMi 10T 5G is slightly lighter, which could be a minor advantage for extended use, but the difference is not significant.
Build Quality (Screen)Corning Gorilla Glass 5Corning Gorilla Glass VictusS21 Ultra has superior scratch and shatter resistance, offering better long-term durability.

Display

FeatureXiaomi Mi 10T 5GSamsung Galaxy S21 Ultra 5GPractical Impact
Size6.67"6.8"S21 Ultra offers a slightly larger viewing area, which can enhance immersion for media consumption and gaming.
Resolution1080x24001440x3200S21 Ultra has significantly sharper and more detailed visuals, especially noticeable when viewing high-resolution content or using VR.
Pixel Density395 PPI515 PPIText and images on the S21 Ultra will appear noticeably crisper and clearer.
TechnologyIPS LCDAMOLEDS21 Ultra's AMOLED display provides deeper blacks, better contrast, more vibrant colors, and better power efficiency, especially with dark mode enabled.
Refresh Rate144Hz120HzMi 10T 5G offers slightly smoother scrolling and animations, but the difference is subtle and may not be perceptible to all users.
Brightness0 nits1500 nitsS21 Ultra is significantly brighter and more usable in direct sunlight.

Performance

FeatureXiaomi Mi 10T 5GSamsung Galaxy S21 Ultra 5GPractical Impact
ChipsetSnapdragon 865 (7 nm+)Exynos 2100 (5 nm) - InternationalBoth are high-end chips, but the Exynos 2100 in the S21 Ultra (International version) is built on a more efficient process, potentially leading to slightly better power efficiency.
Antutu Score742,400749,000Performance is comparable for most tasks; both phones can handle demanding games and applications smoothly.
GPUAdreno 650Mali-G78 MP14 - InternationalBoth GPUs are powerful and capable of running graphically intensive games smoothly. Differences are more nuanced and might be noticeable only in specific optimized games.
RAM6 GB or 8 GB12 GB or 16 GBS21 Ultra offers significantly more RAM, leading to better multitasking and smoother performance when running multiple apps simultaneously.

Camera

FeatureXiaomi Mi 10T 5GSamsung Galaxy S21 Ultra 5GPractical Impact
Main Camera64MP, f/1.89108MP, f/1.8S21 Ultra's higher resolution sensor captures more detail and allows for better digital zoom capabilities.
Telephoto LensNone2 x 10.8MPS21 Ultra offers significantly better zoom capabilities, allowing for high-quality photos at a distance.
Ultrawide Lens13MP, f/2.412.2MP, f/2.2 (Wide Angle + Macro)Both have ultrawide, the S21 Ultra combines Ultrawide with macro.
Selfie Camera20MP, f/2.444MP, f/2.2S21 Ultra captures more detailed selfies, especially in good lighting conditions.
Video RecordingUp to 8K@60fpsUp to 8K@24fpsBoth phones offer excellent video recording capabilities, although the S21 Ultra has HDR for 4K and 8K.
Camera FeaturesTriple CameraQuad Camera, OIS, PDAFS21 Ultra provides more versatile shooting options with optical image stabilization (OIS) for sharper photos and smoother videos.

Battery

FeatureXiaomi Mi 10T 5GSamsung Galaxy S21 Ultra 5GPractical Impact
Capacity5000mAh5000mAhSimilar battery life under comparable usage scenarios.
Charging33W Fast Charging25W Fast ChargingMi 10T 5G charges faster.
Wireless ChargingNo15WS21 Ultra can be charged wirelessly.
Reverse Wireless ChargingNo9WS21 Ultra can charge other devices wirelessly.

2. Key Differences Analysis

Xiaomi Mi 10T 5G Advantages:

  • Faster Wired Charging: 33W charging is noticeably quicker than the S21 Ultra's 25W.
  • Slightly Lighter: A minor difference in weight might be preferable for some users.
  • Potentially Lower Price: Older model, likely available at a lower price point.

Samsung Galaxy S21 Ultra 5G Advantages:

  • Superior Display: Higher resolution, AMOLED technology, and higher brightness provide a significantly better viewing experience.
  • More Versatile Camera System: Dedicated telephoto lenses, OIS, and a higher-resolution main sensor offer greater flexibility and image quality.
  • More RAM: 12GB or 16GB of RAM provides smoother multitasking and better performance with demanding apps.
  • Wireless Charging & Reverse Wireless Charging: Added convenience for charging and powering other devices.
  • Better Build Quality: Gorilla Glass Victus offers superior screen protection.
  • Newer Bluetooth Version: Bluetooth 5.2 offers potential improvements in connection stability and efficiency.
  • Dolby Atmos and Hi-Res Audio: Enhances the audio experience for music and videos.
  • Software Support: Newer device gets more android updates.

Significant Trade-offs:

  • Xiaomi Mi 10T 5G: Sacrifices display quality, camera versatility, and some premium features for a potentially lower price.
  • Samsung Galaxy S21 Ultra 5G: Higher price point.

3. User Profiles & Recommendations

Xiaomi Mi 10T 5G - Ideal Users:

  • Budget-conscious users: Those seeking a powerful phone at a lower price point.
  • Users prioritizing fast charging: Those who want to quickly top up their battery.
  • Users who value high refresh rate: Gamers who want the highest possible refresh rate for smoother graphics.

Use Cases:

  • Everyday tasks, social media, and web browsing.
  • Gaming at high refresh rates (where supported).
  • Users comfortable with a good but not exceptional camera system.

Samsung Galaxy S21 Ultra 5G - Ideal Users:

  • Photography enthusiasts: Those who prioritize a versatile and high-quality camera system.
  • Multimedia consumers: Those who value a vibrant and sharp display for watching videos and playing games.
  • Power users: Those who need ample RAM for multitasking and running demanding apps.
  • Users who value wireless charging and premium features: Those who want the convenience of wireless charging and appreciate higher build quality.

Use Cases:

  • Professional photography and videography.
  • Immersive multimedia consumption.
  • Demanding gaming and productivity tasks.
  • Users who need a reliable and high-performing device for all scenarios.

4. Decision Framework

Consider these questions:

  1. What is your budget? The Mi 10T 5G is likely to be significantly more affordable, especially if bought used or refurbished.
  2. How important is camera quality to you? The S21 Ultra offers a vastly superior and more versatile camera system.
  3. How much do you value display quality and premium features? The S21 Ultra's AMOLED display and features like wireless charging elevate the user experience significantly.

Scenario-Based Recommendations:

  • Scenario 1: Tight Budget, Good Performance Needed: Choose the Xiaomi Mi 10T 5G. It offers good performance at a lower price.
  • Scenario 2: Photography is a Priority: Choose the Samsung Galaxy S21 Ultra 5G. Its camera system is significantly better.
  • Scenario 3: Premium Experience and Multimedia Consumption: Choose the Samsung Galaxy S21 Ultra 5G. Its display and premium features provide a better overall experience.

My Choice

I would choose the Samsung Galaxy S21 Ultra 5G. While the Xiaomi Mi 10T 5G offers excellent value, the S21 Ultra's superior display, significantly better camera system, larger RAM, and premium features like wireless charging outweigh the price difference for my use case. I prioritize a high-quality display for multimedia consumption, and the versatile camera system would be invaluable for capturing photos and videos in various situations. The additional RAM ensures smoother multitasking and a longer lifespan for the device.

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.