Samsung Galaxy S21 Ultra 5G vs Xiaomi Redmi Note 12 Pro - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 November 1, 2022
Release Year 2021 2022

Physical

Volume 111.09 cm³ 99.1 cm³
Screen Size to Weight Ratio 3 "/g 3.57 "/g
Weight 227 g 187 g
Height 165.1 mm 163 mm
Width 75.6 mm 76 mm
Thickness 8.9 mm 8 mm
Foldable Design No No
Available Colors
  • Phantom Black
  • Phantom Silver
  • Phantom Titanium
  • Phantom Navy
  • Phantom Brown
  • Navy
  • Polar White
  • Frosted Blue (Sky Blue)
  • Onyx Black (Midnight Black)
  • Stardust Purple

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 % 86.7 %
Pixel Density 515 PPI 395 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness N/A 500 nits
HBM Brightness N/A 900 nits
Peak Brightness 1500 nits N/A

Hardware

Battery Capacity per Screen Area 108.13 mAh/in² 112.39 mAh/in²
Battery Density 45.01 mAh/cm³ 50.45 mAh/cm³
Battery Capacity 5000 mAh 5000 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Mediatek Dimensity 1080 (6 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (2x2.6 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55)
GPU Mali-G78 MP14 - International Mali-G68 MC4

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 12
Maximum OS Version 15

Comparison Summary

1. Specifications Comparison

FeatureSamsung Galaxy S21 Ultra 5GXiaomi Redmi Note 12 ProPractical Impact
Design
Dimensions165.1 × 75.6 × 8.9 mm163 × 76 × 8 mmS21 Ultra is slightly taller and thicker, but similar width. Note 12 Pro is more compact.
Weight227g187gNote 12 Pro is significantly lighter, more comfortable for extended use.
Display
Size6.8"6.67"S21 Ultra has a slightly larger screen for more immersive viewing.
Resolution1440x32001080x2400S21 Ultra has a much sharper display with more detail.
Pixel Density (PPI)515395S21 Ultra offers noticeably crisper visuals.
TechnologyAMOLEDAMOLEDBoth offer vibrant colors and deep blacks.
Refresh Rate120Hz120HzBoth provide smooth scrolling and animations.
Brightness1500 nits900 nitsS21 Ultra is much brighter for excellent outdoor visibility.
Performance
ChipsetExynos 2100 (5 nm)Mediatek Dimensity 1080 (6 nm)S21 Ultra has a more powerful chip, offering faster overall performance.
AnTuTu Score749,000573,200S21 Ultra has higher performance for demanding apps and games.
GPUMali-G78 MP14Mali-G68 MC4S21 Ultra has a more capable GPU, better for graphics-intensive tasks.
Camera
Standard Camera Resolution108MP50MPS21 Ultra captures significantly more detailed photos.
Standard Camera Sensor Size1/1.33"1/1.56"S21 Ultra has a larger sensor for better light capture, especially in low light.
Standard Camera Pixel Size0.80 µm1.00 µmNote 12 Pro has larger individual pixel size, for better light sensitivity in standard use.
Telephoto + Portrait Camera10.8MPN/AS21 Ultra offers dedicated telephoto and portrait capabilities.
Selfie Camera Resolution44MP16MPS21 Ultra captures much higher resolution selfies.
Telephoto Lens10.8MPN/AS21 Ultra has dedicated telephoto lens for long range shots.
Wide Angle LensN/A8MPNote 12 Pro offers ultrawide photography.
Macro LensN/A2MPNote 12 Pro offers dedicated macro photography.
Wide Angle + Macro Lens12.2MPN/AS21 Ultra has ultrawide capability + macro shots.
Video Recording (Max)8K@24fps4K@30fpsS21 Ultra supports higher resolution, professional-grade video recording.
Mobile Camera DXOMark Score115102S21 Ultra has a better overall camera performance.
Selfie Camera DXOMark Score135N/AS21 Ultra has a superior selfie camera.
Battery
Capacity5000mAh5000mAhBoth have similar battery life; expect comparable endurance.
Charging25W67WNote 12 Pro charges significantly faster.
Wireless Charging15WN/AS21 Ultra offers wireless charging, for added convenience.
Reverse ChargingYesN/AS21 Ultra can charge other devices wirelessly.
Software
OSAndroid 11 (upgradable to 15)Android 12Note 12 Pro is slightly newer in terms of base OS, but S21 Ultra is confirmed to have higher Android support.
Connectivity
WiFiWiFi 6WiFi 6Both phones support the latest WiFi standard.
Bluetooth5.2, wide profile support5.2, basic profile supportS21 Ultra has more diverse audio/peripheral support.
GPSDual Band, multiple systemsMultiple systems, dual bandNote 12 Pro has slightly more diverse GPS satellite support.
SIMDual SIM Dual StandbyDual SIM Dual StandbyBoth offer dual SIM support.
Storage
Internal128GB/256GB/512GB128GB/256GBS21 Ultra offers a larger storage option, suitable for vast collections of media.
RAM12GB/16GB6GB/8GB/12GBS21 Ultra offers more RAM for demanding usage and smoother multitasking.
Expandable StorageNoNoNeither phone supports expandable storage.
Audio
FeaturesDolby Atmos, Hi-Res Audio, Noise cancellation mic, Stereo SpeakersDolby Atmos, Stereo SpeakersS21 Ultra offers a more premium audio experience with noise cancellation and Hi-Res audio.
Security
FeaturesBasic Fingerprint SensorSide-mounted Fingerprint SensorNote 12 Pro is more convenient with side mounted sensor.
Build Quality
Screen ProtectionGorilla Glass VictusGorilla Glass 5S21 Ultra offers enhanced screen scratch/shatter protection
Sensors
SensorsFingerprint, Proximity, Accelerometer, Compass, Gyroscope, BarometerFingerprint, Proximity, Accelerometer, Compass, GyroscopeS21 Ultra includes a barometer for environmental sensing.

2. Key Differences Analysis

Samsung Galaxy S21 Ultra 5G Advantages:

  • Superior Display: Higher resolution, pixel density, and brightness provide a much more detailed and vivid viewing experience, especially outdoors.
  • Higher Performance: More powerful chipset and GPU result in faster app loading, smoother multitasking, and better gaming performance.
  • Advanced Camera System: Features significantly higher resolution main and selfie cameras, dedicated telephoto lenses, and more features, leading to superior photo and video quality.
  • Premium Build and Features: Offers wireless charging, reverse wireless charging, enhanced screen protection, and a more robust audio setup.
  • More RAM & Storage: Higher RAM options allow for smoother multitasking. Larger storage options allows to store more files.
  • More versatile connectivity: Wider bluetooth profile support and dual band GPS

  • Trade-offs:

    • Heavier and bulkier design compared to the Note 12 Pro.
    • Slower charging speed despite similar battery capacity.

Xiaomi Redmi Note 12 Pro Advantages:

  • Lighter and More Compact: More comfortable to hold and carry for extended periods due to its lighter build and slim design.
  • Faster Charging: Significantly faster charging allows you to quickly top up your battery.
  • Dedicated Macro and Ultrawide Lens: Offers more versatile photography capabilities with dedicated ultrawide and macro lenses for wide-angle and detailed close-up shots.
  • More convenient fingerprint scanner: side-mounted, for faster unlocks.
  • Newer base OS: Slightly more modern software than the older S21 Ultra.
  • Trade-offs:
    • Lower display resolution, pixel density and brightness.
    • Less powerful processor and GPU.
    • Lower quality main, selfie cameras and less diverse camera system.
    • Lacks wireless charging, reverse charging, and some audio features of the S21 Ultra.
    • Less RAM, less storage capacity.

3. User Profiles & Recommendations

Samsung Galaxy S21 Ultra 5G:

  • Ideal User:

    • Users who prioritize top-tier display quality for media consumption.
    • Professional photographers and videographers needing advanced camera capabilities.
    • Power users who demand high performance for gaming and multitasking.
    • Those who value premium features like wireless charging and robust build quality.
  • Use Cases:

    • Professional photography/videography requiring high-resolution images and videos.
    • Demanding mobile gaming with smooth graphics and high refresh rates.
    • Enjoying high-resolution videos and detailed images with vibrant colors on a sharp display.
    • Productivity tasks requiring smooth multitasking across multiple apps.
    • Outdoor usage in bright sunlight due to high brightness levels.

Xiaomi Redmi Note 12 Pro:

  • Ideal User:

    • Users who prioritize a lightweight and comfortable design for daily use.
    • Value quick charging.
    • Those seeking a more versatile camera setup for everyday snapshots, including macro and ultrawide.
    • Users who desire good value for money, balancing features and price.
    • Users who don't need premium level performance or photography.
  • Use Cases:

    • Everyday photography with the flexibility of ultrawide and macro lenses.
    • Extended use without fatigue due to its lighter weight.
    • Quickly topping up the battery during busy days.
    • General multimedia consumption and social media browsing.
    • Users on a budget who still want a capable device for everyday tasks.

4. Decision Framework

Key Questions to Consider:

  1. What is your budget? The S21 Ultra is generally more expensive due to its premium features and performance.
  2. What are your priorities regarding photography? Do you need professional-grade cameras, or is a versatile everyday setup sufficient?
  3. How important is display quality and performance? Do you need the absolute best visuals and processing power, or is good performance for general use enough?

Scenario-Based Recommendations:

  • Scenario 1: Photography Enthusiast/Professional
    • Recommendation: Samsung Galaxy S21 Ultra 5G.
    • Reasoning: The S21 Ultra provides much more detail, has diverse camera capabilities, and has a higher DxOMark score. It's the clear choice for the best possible image and video quality.
  • Scenario 2: Everyday User Prioritizing Comfort and Charging Speed
    • Recommendation: Xiaomi Redmi Note 12 Pro.
    • Reasoning: The Note 12 Pro is lighter, has a more compact design, and charges significantly faster, making it better for everyday comfort and convenience.
  • Scenario 3: Gaming and Performance Lover:
    • Recommendation: Samsung Galaxy S21 Ultra 5G.
    • Reasoning: The S21 Ultra offers far higher performance in terms of processing power, with a much more powerful GPU. It will be able to handle intensive tasks and games without slowing down.
  • Scenario 4: Best Display
    • Recommendation: Samsung Galaxy S21 Ultra 5G.
    • Reasoning: The S21 Ultra has significantly better display quality, with much higher brightness for excellent outdoor visibility.

My Choice

If I were choosing between these two phones, I would pick the Samsung Galaxy S21 Ultra 5G.

Here's why:

Despite the newer age of the Xiaomi Redmi Note 12 Pro, the S21 Ultra's strengths align more closely with my priorities. I value a high-quality display for immersive viewing, and the S21 Ultra's superior resolution, brightness, and pixel density make a significant difference. Additionally, the S21 Ultra has a much more capable main camera, selfie camera, and additional telephoto capabilities. As someone who does not need to take many macro or wide angle pictures, the tradeoff of better overall picture quality and zoom capability is well worth it.

While the Note 12 Pro's faster charging is appealing, the S21 Ultra's wireless charging offers convenience I find useful. The S21 Ultra also has a much more powerful processor and GPU, which translates to smoother multitasking and a more enjoyable gaming experience. The extra RAM and storage space are also beneficial. The S21 Ultra has a much more extensive bluetooth profile support for added versatility.

Ultimately, while the Xiaomi Redmi Note 12 Pro is an excellent mid-range option, the Samsung Galaxy S21 Ultra 5G provides a more premium experience that justifies the extra cost for my usage needs.

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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