Samsung Galaxy S21 Ultra 5G vs vivo V21 5G - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 May 6, 2021
Release Year 2021 2021

Physical

Volume 111.09 cm³ 86.15 cm³
Screen Size to Weight Ratio 3 "/g 3.66 "/g
Weight 227 g 176 g
Height 165.1 mm 159.7 mm
Width 75.6 mm 73.9 mm
Thickness 8.9 mm 7.3 mm
Foldable Design No No
Available Colors
  • Phantom Black
  • Phantom Silver
  • Phantom Titanium
  • Phantom Navy
  • Phantom Brown
  • Navy
  • Arctic White
  • Dusk Blue
  • Sunset Dazzle

Display

Screen Size 6.8 " 6.44 "
Resolution 1440 x 3200 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 89.4 % 84.8 %
Pixel Density 515 PPI 409 PPI
Refresh Rate 120 Hz 90 Hz
Typical Brightness N/A 500 nits
HBM Brightness N/A N/A
Peak Brightness 1500 nits N/A

Hardware

Battery Capacity per Screen Area 108.13 mAh/in² 96.45 mAh/in²
Battery Density 45.01 mAh/cm³ 46.43 mAh/cm³
Battery Capacity 5000 mAh 4000 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Mediatek Dimensity 800U (7 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU Mali-G78 MP14 - International Mali-G57 MC3

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

Here's a detailed comparison of the Samsung Galaxy S21 Ultra 5G and the vivo V21 5G, focusing on the practical implications of their specifications:

Design

FeatureSamsung Galaxy S21 Ultra 5Gvivo V21 5GPractical Impact
Dimensions165.1 × 75.6 × 8.9 mm159.7 × 73.9 × 7.3 mmS21 Ultra is larger, bulkier, less pocketable. V21 is more compact, easier to handle.
Weight227g176gS21 Ultra is significantly heavier; V21 is more comfortable for long usage.
BuildCorning Gorilla Glass Victus screen, material unknownScreen protection is unknownS21 Ultra has superior screen scratch resistance, potentially more durable; V21 screen protection is unspecified.

Display

FeatureSamsung Galaxy S21 Ultra 5Gvivo V21 5GPractical Impact
Size6.8"6.44"S21 Ultra has a larger screen for immersive media & gaming. V21 is slightly more compact.
Resolution1440x32001080x2400S21 Ultra offers much sharper, more detailed visuals. V21 is less sharp.
Pixel Density515 ppi409 ppiS21 Ultra provides a crisper, clearer display experience.
TechnologyAMOLEDAMOLEDBoth have vibrant colors and deep blacks.
Refresh Rate120Hz90HzS21 Ultra has smoother scrolling and animations.
Brightness1500 nits0 nitsS21 Ultra is significantly brighter, excellent for outdoor visibility. V21 brightness data is missing.

Performance

FeatureSamsung Galaxy S21 Ultra 5Gvivo V21 5GPractical Impact
ChipsetExynos 2100 (5 nm)Mediatek Dimensity 800U (7 nm)S21 Ultra has a much more powerful, faster chipset. V21 is less powerful, but still adequate for everyday tasks.
AnTuTu Score749,000343,150S21 Ultra offers much faster app loading, better multitasking, and better gaming performance.
GPUMali-G78 MP14Mali-G57 MC3S21 Ultra's GPU is substantially more capable for graphics-intensive tasks.

Camera

FeatureSamsung Galaxy S21 Ultra 5Gvivo V21 5GPractical Impact
Main Camera108MP f/1.864MP f/1.79S21 Ultra captures higher detail photos. V21 has slightly wider aperture for better low-light.
Telephoto + Portrait10.8MP f/2.4NoneS21 Ultra has dedicated telephoto zoom capabilities. V21 lacks this.
Selfie Camera44MP f/2.244MP f/2.0V21 has slightly wider aperture for better selfies in low light. Both have high-res sensors.
Telephoto Lens10.8MP f/4.9NoneS21 Ultra has dedicated telephoto zoom capabilities. V21 lacks this.
Wide Angle LensNone8MP f/2.2V21 allows you to capture wide-angle shots. S21 Ultra lacks this.
Macro LensNone2MP f/2.4V21 allows you to capture close-up macro shots. S21 Ultra lacks this.
Wide Angle + Macro12.2MP f/2.2NoneS21 Ultra offers wide-angle and macro in one sensor.
Video8K@24fps, 4K@60fps4K@30fpsS21 Ultra records videos at much higher quality and frames per second, better for pro video and slow motion
DXOMark (Mobile)115Not testedS21 Ultra has been tested and its image quality is quantified. No data on V21.
DXOMark (Selfie)135Not testedS21 Ultra selfie quality is better than most on the market. No data on V21.
Features8K, optical zoom, quad camera, laser AF, RAWUltra stable video, Front flashS21 Ultra has features more for demanding professional photography; V21 is more for easy, casual photography

Battery

FeatureSamsung Galaxy S21 Ultra 5Gvivo V21 5GPractical Impact
Capacity5000mAh4000mAhS21 Ultra will likely have longer battery life.
Charging25W33WV21 charges faster.
FeaturesWireless & Reverse ChargingNoneS21 Ultra provides more versatility with wireless & reverse charging. V21 lacks these features.

Other

FeatureSamsung Galaxy S21 Ultra 5Gvivo V21 5GPractical Impact
Operating SystemAndroid 11 (Upgradable to 15)Android 11S21 Ultra has guaranteed OS update to Android 15, V21 update support is unknown
Wi-FiWi-Fi 6 (802.11ax) + MiMO802.11acS21 Ultra supports faster Wi-Fi, better performance in crowded environments
Bluetooth5.25.1S21 Ultra has slightly newer Bluetooth with more features.
GPSL1+L5 Dual-BandL1S21 Ultra has better location accuracy in built-up areas and challenging environments.
Internal Storage128/256/512GB128/256GBS21 Ultra has more storage options for media-heavy users
RAM12GB/16GB8GBS21 Ultra is better for heavy multitasking.
AudioDolby Atmos, Hi-Res, Stereo SpeakersBasicS21 Ultra has better audio quality with a more immersive experience
SensorsBarometer, Hall, GeomagneticAccelerometer, Compass, GyroscopeS21 Ultra has a more complete sensor package, useful for advanced features, gaming, and environmental data.

2. Key Differences Analysis

Samsung Galaxy S21 Ultra 5G Advantages:

  • Superior Display: Larger, higher resolution, significantly brighter, and 120Hz refresh rate screen provides a far better visual experience.
  • Far Superior Performance: The Exynos 2100 chipset offers significantly higher processing power and GPU performance, leading to smoother and faster app usage, multitasking and gaming.
  • More Versatile Cameras: Offers optical zoom capabilities, higher-resolution main sensor, and 8K video recording, suitable for more serious photography and videography. Also has a wider angle + macro lens.
  • Larger Battery: The 5000mAh battery is likely to offer better battery life and longevity.
  • Premium Audio: Includes Dolby Atmos and stereo speakers, providing a better audio experience.
  • Advanced Features: Wireless & reverse charging, better screen protection, more versatile connectivity, a better sensor package, and a more mature OS with guaranteed updates.

    Practical Implications: The S21 Ultra excels in almost all aspects, offering a superior user experience for power users who value a top-tier display, performance, camera versatility, and advanced features.

vivo V21 5G Advantages:

  • Lighter and More Compact: More pocketable and comfortable to handle for extended periods.
  • Faster Charging: The 33W charging is slightly faster than the S21 Ultra's 25W.
  • Wider Aperture Front Camera: Slightly better low light selfies
  • Dedicated Wide-Angle and Macro Lens: Offers more versatility with its dedicated wide-angle and macro lenses.
  • Front Flash: For better lit selfies in low light

    Practical Implications: The V21 5G excels as a lightweight, comfortable, and more affordable phone for users who prioritize portability, decent performance, casual photography, and faster charging.

Trade-offs:

  • S21 Ultra: Larger and heavier; less portable than the V21. Lacks dedicated wide-angle and macro lens.
  • vivo V21: Significantly less powerful, lower resolution, dimmer display. Less versatile camera system and fewer advanced features.

3. User Profiles & Recommendations

Samsung Galaxy S21 Ultra 5G:

  • Ideal User: Power users, mobile photographers, gamers, and anyone who values a premium experience with a top-tier display, performance, and versatile camera features.
  • Use Cases:
    • High-end mobile gaming with demanding graphics.
    • Professional photo and video creation with 8K recording.
    • Heavy multitasking with numerous apps.
    • Immersive media consumption (movies, TV shows) with the large, high-resolution display.
    • Users who need their phone for work and need the best performance and features available.
  • Price-to-Value: While expensive, the S21 Ultra offers a premium experience that can justify the cost for the right user.

vivo V21 5G:

  • Ideal User: Casual users, those who prioritize comfort, portability, and everyday photography with a good front camera.
  • Use Cases:
    • Daily social media usage, browsing, and communication.
    • Taking casual photos and selfies.
    • Users who value comfortable, easy handling.
    • Media consumption by users who want a reasonable screen in a lightweight and thin phone
  • Price-to-Value: It offers a decent set of features for its more budget-friendly price point.

4. Decision Framework

Here are three key questions buyers should consider:

  1. Performance Requirements:
    • Do you need the most powerful phone for gaming, professional work, or intensive tasks, or just something that works well for daily use?
    • Recommendation: If you need top performance choose Samsung; if not, Vivo will suffice.
  2. Camera Priorities:
    • Do you need versatile camera options with optical zoom, high-resolution video, or are casual snapshots enough?
    • Recommendation: If you need more versatility and pro-grade features choose Samsung; if not, Vivo will be fine.
  3. Size and Portability:
    • Do you prefer a larger screen for immersive media or a more compact phone that's easier to carry and handle?
    • Recommendation: If you prioritize screen size and immersion, choose the Samsung. If you want a small, lightweight, comfortable phone, choose Vivo.

Scenario-Based Recommendations:

  • Scenario 1 (Power User): If you need the best performance and a pro camera setup, the Samsung Galaxy S21 Ultra 5G is the clear choice.
  • Scenario 2 (Casual User): If you value portability, comfort, and decent daily performance with a better front camera, the vivo V21 5G is a good option.
  • Scenario 3 (Value Conscious): If you're on a tighter budget, the vivo V21 5G provides decent value for the price, while acknowledging the performance compromises.

My Choice

If I were choosing between these two phones, I would choose the Samsung Galaxy S21 Ultra 5G. While the vivo V21 5G has the advantage of being more compact and lighter, I prioritize the superior display, significantly higher performance, and much more versatile camera system of the S21 Ultra. The additional features such as wireless charging, a better audio experience, and a more robust build make it worth the trade-off in size and weight for my usage patterns. As a user who values performance and a top-tier user experience, the S21 Ultra is the better option despite its higher price.

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
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Bridging technical complexity with engaging, accessible narratives.