Samsung Galaxy S21 Ultra 5G vs Xiaomi Redmi Note 11 Pro - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 February 18, 2022
Release Year 2021 2022

Physical

Volume 111.09 cm³ 101.21 cm³
Screen Size to Weight Ratio 3 "/g 3.3 "/g
Weight 227 g 202 g
Height 165.1 mm 164.2 mm
Width 75.6 mm 76.1 mm
Thickness 8.9 mm 8.1 mm
Foldable Design No No
Available Colors
  • Phantom Black
  • Phantom Silver
  • Phantom Titanium
  • Phantom Navy
  • Phantom Brown
  • Navy
  • Star Blue
  • Graphite Gray (Stealth Black)
  • Polar White (Phantom White)

Display

Screen Size 6.8 " 6.67 "
Resolution 1440 x 3200 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 89.4 % 86 %
Pixel Density 515 PPI 395 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness N/A 700 nits
HBM Brightness N/A N/A
Peak Brightness 1500 nits 1200 nits

Hardware

Battery Capacity per Screen Area 108.13 mAh/in² 112.39 mAh/in²
Battery Density 45.01 mAh/cm³ 49.4 mAh/cm³
Battery Capacity 5000 mAh 5000 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Mediatek MT6781 Helio G96 (12 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (2x2.05 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU Mali-G78 MP14 - International Mali-G57 MC2

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 11
Maximum OS Version 15

Comparison Summary

1. Specifications Comparison

Design

FeatureSamsung Galaxy S21 Ultra 5GXiaomi Redmi Note 11 ProPractical Impact
Dimensions165.1 × 75.6 × 8.9 mm164.2 × 76.1 × 8.1 mmS21 Ultra is slightly thicker, while both phones have similar height and width.
Weight227g202gRedmi Note 11 Pro is noticeably lighter, making it more comfortable for extended use.
Build Quality (Screen Protection)Corning Gorilla Glass VictusCorning Gorilla Glass 5S21 Ultra offers more robust screen protection against scratches and drops.

Display

FeatureSamsung Galaxy S21 Ultra 5GXiaomi Redmi Note 11 ProPractical Impact
Size6.8"6.67"S21 Ultra offers a slightly larger viewing area, better for media consumption and multitasking.
Resolution1440x32001080x2400S21 Ultra has a significantly sharper display with finer details, enhancing visual clarity.
Pixel Density (PPI)515395S21 Ultra display will look sharper than Redmi Note 11 Pro display.
TechnologyAMOLEDAMOLEDBoth offer vibrant colors and deep blacks, characteristic of AMOLED displays.
Refresh Rate120Hz120HzBoth provide smooth scrolling and animations, ideal for gaming and general usage.
Brightness1500 nits1200 nitsS21 Ultra is more easily readable in bright sunlight due to higher peak brightness.

Performance

FeatureSamsung Galaxy S21 Ultra 5GXiaomi Redmi Note 11 ProPractical Impact
ChipsetExynos 2100 (5 nm)Mediatek Helio G96 (12 nm)S21 Ultra chipset is significantly more powerful, resulting in faster performance, smoother multitasking, and better gaming.
AnTuTu Score749,000405,259S21 Ultra offers much faster app loading, smoother UI and gaming performance.
GPUMali-G78 MP14Mali-G57 MC2S21 Ultra's GPU provides superior graphics processing for gaming and demanding apps.
RAM12 GB or 16 GB6 GB or 8 GBS21 Ultra can handle more apps and processes simultaneously without slowdowns.

Camera

FeatureSamsung Galaxy S21 Ultra 5GXiaomi Redmi Note 11 ProPractical Impact
Main Camera Resolution108MP108MPBoth produce high-resolution images, but S21 Ultra likely captures more detail due to its larger sensor.
Main Camera Aperturef/1.8f/1.9S21 Ultra allows more light to reach the sensor, potentially better in low light.
Main Camera Sensor Size1/1.33"1/1.52"S21 Ultra's larger sensor generally captures more light, which leads to better image quality.
Telephoto Lens10.8MP (x2)NoneS21 Ultra provides optical zoom capabilities for closer shots without loss in quality.
Wide Angle + Macro Lens12.2MPNoneS21 Ultra offers wide angle and macro capabilities for versatile photo taking
Wide Angle LensNone8MPRedmi Note 11 Pro captures wide angle shots.
Macro LensNone2MPRedmi Note 11 Pro offers macro photography for close up shots.
Selfie Camera Resolution44MP16MPS21 Ultra captures higher-resolution selfies with more detail.
Selfie Camera Aperturef/2.2f/2.4S21 Ultra's wider aperture on selfie camera allows more light, resulting in brighter selfies.
Selfie Camera Sensor Size1/2.65"1/3.06"S21 Ultra's larger sensor will capture more light for brighter selfies.
Video RecordingUp to 8K@24fpsUp to 1080p@30fpsS21 Ultra supports professional-grade video capture with much higher resolution and advanced features.
Slow-motion Video960 fps120 fpsS21 Ultra allows capturing slow-motion footage at a much higher frame rate.
DXOMARK Score (Mobile)11578S21 Ultra demonstrates significantly better overall camera performance.
DXOMARK Score (Selfie)135N/AS21 Ultra shows superior selfie camera quality.

Battery

FeatureSamsung Galaxy S21 Ultra 5GXiaomi Redmi Note 11 ProPractical Impact
Capacity5000mAh5000mAhBoth offer similar battery life for typical daily use.
Charging Speed25W67WRedmi Note 11 Pro charges much faster, reducing downtime.
Wireless Charging15WNoS21 Ultra offers convenient wireless charging capabilities.
Reverse Wireless Charging9WNoS21 Ultra can charge other devices wirelessly, like headphones or smartwatches.

2. Key Differences Analysis

Samsung Galaxy S21 Ultra 5G Advantages:

  • Superior Display: Higher resolution and brightness lead to a much better visual experience, especially in bright sunlight.
  • Significantly Faster Performance: The Exynos 2100 chipset provides noticeably faster performance in all tasks, from launching apps to playing demanding games.
  • More Versatile Camera System: Offers telephoto zoom, a higher-resolution front camera, and superior overall image and video quality, and 8k video recording.
  • Wireless Charging and Reverse Wireless Charging: Adds convenience and utility, particularly for charging accessories on the go.
  • More Feature Rich Software: Offers support for up to Android 15.
  • More comprehensive sensor suite: Includes extra sensors such as a barometer.

Xiaomi Redmi Note 11 Pro Advantages:

  • Lighter and Thinner: More comfortable to hold for long periods, and easier to carry.
  • Faster Charging: The 67W charging significantly reduces charging time.
  • Macro Lens and Wide Angle: Offers additional lenses for more creative photography.
  • Lower Price: It will likely cost less than the S21 Ultra.
  • Side-mounted fingerprint sensor: Allows for faster access to the device.

Trade-offs:

  • S21 Ultra: Heavier and more expensive with slower charging speeds, it's a clear upgrade in camera, display, and performance.
  • Redmi Note 11 Pro: While lighter, it sacrifices camera capabilities, performance, and display quality to achieve a lower price point, while also featuring an additional lens.

3. User Profiles & Recommendations

Samsung Galaxy S21 Ultra 5G is ideal for:

  • Power Users: Individuals who demand top-tier performance for demanding apps, multitasking, and gaming.
  • Photography Enthusiasts: Users who prioritize image and video quality, and require versatile zoom and creative controls.
  • Media Consumers: Those who appreciate a high-resolution, bright, and vibrant display for immersive media consumption.
  • Tech Enthusiasts: Users who want a device with all the latest features and technology.

Specific Use Cases:

  • Professional photography and videography, content creation, mobile gaming, running multiple apps simultaneously, extended use in bright conditions.

Xiaomi Redmi Note 11 Pro is ideal for:

  • Budget-conscious users: Individuals seeking a capable phone with a good display and battery at an affordable price.
  • Casual Photographers: Those who primarily use their phone for snapshots, but want additional lenses for creative photos, such as wide-angle.
  • Everyday Users: People who need a reliable device for social media, browsing, and light gaming with fast charging capabilities.
  • Users who value comfort: People who want a lighter phone that is easy to carry and use for longer periods of time.

Specific Use Cases:

  • Daily social media use, web browsing, basic photography, media consumption, and users who need a device that charges quickly.

Price-to-Value Ratio:

  • S21 Ultra: Higher price, but justifies the cost for users who need a top-tier phone with advanced features.
  • Redmi Note 11 Pro: Provides a good balance of features and performance for its price point, appealing to budget-conscious users.

4. Decision Framework

Key Questions to Consider:

  1. What is your budget? The S21 Ultra is a flagship device and will cost significantly more than the Redmi Note 11 Pro.
  2. How important is camera quality and versatility? If you prioritize high quality images, optical zoom and other versatile camera features, the S21 Ultra is the better choice.
  3. What kind of performance do you need? If you are doing heavy gaming or running multiple apps, you would want to prioritize the S21 Ultra, but if you are a casual user, the Redmi Note 11 Pro should be enough.

Scenario-Based Recommendations:

  • Scenario 1 (Professional Photographer/Videographer): If you need the best mobile camera, 8k video, and advanced photography features, the Samsung Galaxy S21 Ultra 5G is the only viable choice.
  • Scenario 2 (Heavy Gamer): The Samsung Galaxy S21 Ultra 5G offers superior performance and graphics capabilities, resulting in a much better gaming experience.
  • Scenario 3 (Budget-Conscious Casual User): For a reliable device with a fast-charging battery and good display for daily use, the Xiaomi Redmi Note 11 Pro offers a very good balance between price and performance.
  • Scenario 4 (User who values lightweight phones): The Xiaomi Redmi Note 11 Pro is the obvious choice as it is significantly lighter and thinner.

My Choice:

If I were choosing between these two phones, I would personally pick the Samsung Galaxy S21 Ultra 5G. While it is more expensive, my primary use cases are mobile gaming, occasional photography, and extended periods of use.

Here's why:

  • Performance: The Exynos 2100 chipset and significantly more RAM would provide a much smoother experience for gaming and multitasking, making it the more powerful device.
  • Camera Versatility: I value the superior camera system offered by the S21 Ultra. The optical zoom, 8k video, and superior image quality are critical for my needs.
  • Display Quality: I would be much happier with the higher resolution and brightness of the S21 Ultra's screen. I would really value the extra brightness for better visibility outdoors.
  • Feature Set: I would also benefit from the wireless and reverse wireless charging features.

The only thing that the Xiaomi has going for it that is better than the S21 Ultra is the fast charging, however, I value the performance, display and camera more than fast charging, which is why the S21 Ultra would be my choice.

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.