Samsung Galaxy S21 Ultra 5G vs Samsung Galaxy Z Flip3 5G - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 August 27, 2021
Release Year 2021 2021

Physical

Volume 111.09 cm³ 82.7 cm³
Screen Size to Weight Ratio 3 "/g 3.66 "/g
Weight 227 g 183 g
Height 165.1 mm 166 mm
Width 75.6 mm 72.2 mm
Thickness 8.9 mm 6.9 mm
Foldable Design No Yes
Available Colors
  • Phantom Black
  • Phantom Silver
  • Phantom Titanium
  • Phantom Navy
  • Phantom Brown
  • Navy
  • White
  • Green
  • Phantom Black
  • Pink
  • Gray
  • Thom Browne Edition
  • Wooyoungmi Edition
  • Lavender
  • Cream
  • Bespoke Edition
  • Dream White

Display

Screen Size 6.8 " 6.7 "
Resolution 1440 x 3200 1080 x 2640
Aspect Ratio 20:9 22:9
Screen-to-Body Ratio 89.4 % 84.7 %
Pixel Density 515 PPI 426 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness N/A N/A
HBM Brightness N/A N/A
Peak Brightness 1500 nits 1200 nits

Hardware

Battery Capacity per Screen Area 108.13 mAh/in² 73.51 mAh/in²
Battery Density 45.01 mAh/cm³ 39.9 mAh/cm³
Battery Capacity 5000 mAh 3300 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Qualcomm SM8350 Snapdragon 888 5G (5 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55)
GPU Mali-G78 MP14 - International Adreno 660

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 14

Comparison Summary

Smartphone Comparison: Samsung Galaxy S21 Ultra 5G vs. Samsung Galaxy Z Flip3 5G

1. Specifications Comparison

Design

FeatureSamsung Galaxy S21 Ultra 5GSamsung Galaxy Z Flip3 5GPractical Impact
Form FactorStandardFoldableZ Flip3 offers unique portability and a compact form when folded; S21 Ultra is a traditional, larger slab.
Dimensions165.1 × 75.6 × 8.9 mm166 × 72.2 × 6.9 mmS21 Ultra is wider and thicker, making it feel bulkier; Z Flip3 is slimmer and more pocketable when unfolded, very compact when folded.
Weight227g183gZ Flip3 is significantly lighter, making it more comfortable to hold and carry for extended periods.

Display

FeatureSamsung Galaxy S21 Ultra 5GSamsung Galaxy Z Flip3 5GPractical Impact
Size6.8"6.7"Minimal size difference; both offer large screens suitable for media consumption and productivity.
Resolution1440x32001080x2640S21 Ultra offers a noticeably sharper, more detailed display; better for high-resolution content and detailed viewing.
Pixel Density515 PPI426 PPIS21 Ultra has higher pixel density, resulting in a crisper image and smoother text rendering.
TechnologyAMOLEDS21 Ultra has superior display technology; deeper blacks, better contrast, more vibrant colors and power efficiency.
Refresh Rate120Hz120HzBoth offer smooth scrolling and animations; suitable for gaming and fast-paced content.
Brightness1500 nits1200 nitsS21 Ultra is significantly brighter, providing better visibility in direct sunlight, ideal for outdoor use.

Performance

FeatureSamsung Galaxy S21 Ultra 5GSamsung Galaxy Z Flip3 5GPractical Impact
ChipsetExynos 2100 (5 nm) - InternationalQualcomm SM8350 Snapdragon 888 5G (5 nm)Z Flip3 generally has marginally better raw performance; both offer flagship-level speed for everyday tasks and gaming.
AnTuTu Score749,000898,700Z Flip3 scores higher, translating to slightly smoother and faster performance in demanding apps and games.
GPUMali-G78 MP14 - InternationalAdreno 660Different GPUs, both offering high-end graphics performance; Z Flip3's Adreno 660 is slightly more optimized for some games.

Camera

FeatureSamsung Galaxy S21 Ultra 5GSamsung Galaxy Z Flip3 5GPractical Impact
Standard Camera108MP, f/1.8, 1/1.33", 0.8µm12.2MP, f/1.8, 1/2.55", 1.4µmS21 Ultra has significantly higher resolution, larger sensor for better detail and low-light performance; Z Flip3 has larger pixel size, useful in low-light.
Telephoto + Portrait10.8MP, f/2.4, 1/2.65", 1.22µmNot presentS21 Ultra has dedicated telephoto lens for zoom capabilities and portrait mode with background blur. Z Flip3 lacks a dedicated telephoto lens.
Selfie Camera44MP, f/2.2, 1/2.65", 0.70µm10MP, f/2.4, 1/3.2", 1.22µmS21 Ultra offers superior resolution and wider aperture, leading to more detailed and better-lit selfies.
Telephoto Lens10.8MP, f/4.9, 1/2.65", 1.22µmNot presentS21 Ultra has additional telephoto lens for greater zoom range. Z Flip3 does not have a telephoto zoom camera.
Wide Angle LensNot present13MP, 1/3.06", 1.12µmZ Flip3 offers a dedicated wide-angle lens for capturing expansive scenes; S21 Ultra doesn't offer wide angle lens as dedicated sensor.
Wide Angle + Macro12.2MP, f/2.2, 1/2.55", 1.40µmNot presentS21 Ultra offers a dedicated wide-angle lens with macro capabilities; Z Flip3 does not have a dedicated macro lens.
Video RecordingUp to 8K@24fps with HDR, EIS, Stereo SoundUp to 4K@60fps with HDRS21 Ultra offers higher video resolution for professional-grade videography, while both provide excellent video quality with HDR and stabilization.
DXOMark (Mobile)Main: 115, Photo: 121, Video: 100Main: 111, Photo: 118, Video: 110S21 Ultra has slightly better photo score, while Z Flip3 has better video quality score; S21 Ultra has better overall camera performance compared to Z Flip3 based on DxoMark scores.
DXOMark (Selfie)Main: 135, Photo: 133, Video: 140Not testedS21 Ultra excels in selfie capabilities, offering impressive photo and video quality.
Camera Features4K/8K Video, Optical Zoom, Quadruple Camera, Laser AF, OIS, RAW, Night Mode4K Video, Dual Camera, OISS21 Ultra offers a more feature-rich camera system with advanced options like 8K video, optical zoom, raw capture, and dedicated night mode; Z Flip3 excels in the basic functionality and image processing.

Battery

FeatureSamsung Galaxy S21 Ultra 5GSamsung Galaxy Z Flip3 5GPractical Impact
Capacity5000mAh3300mAhS21 Ultra has a significantly larger battery, offering potentially longer battery life, especially for heavy use.
Charging25W Fast Charging15W Fast ChargingS21 Ultra charges faster, reducing the time needed to fully charge the device.
FeaturesWireless Charging 15W, Reverse wireless charging 9W, No charger in-boxReverse charging, Non-removable, No charger in-boxS21 Ultra provides more versatile charging options, including wireless and reverse wireless charging. No charger comes in the box for both phones.

2. Key Differences Analysis

Samsung Galaxy S21 Ultra 5G Advantages:

  • Superior Display: Higher resolution, pixel density, and brightness make it significantly better for visual experience, especially outdoors.
  • Advanced Camera System: Boasts a more versatile system with multiple zoom lenses, higher resolution sensors, and additional features, leading to better photo and video capabilities.
  • Significantly Larger Battery: Provides longer battery life, reducing the need to frequently recharge throughout the day.
  • Faster Charging: Allows faster charging times, useful for topping up quickly.
  • More RAM: Offers more RAM for better multitasking, allowing multiple apps to run smoothly.
  • Enhanced Audio: Features Dolby Atmos, Hi-Res Audio, and noise-canceling mic for better sound quality.
  • More Storage Option: The option for 512 GB provides a lot more storage than the Z Flip3.

Practical Implications: The S21 Ultra is geared towards users who need a powerful multimedia device with top-tier camera capabilities, excellent display quality, and long battery life.

Samsung Galaxy Z Flip3 5G Advantages:

  • Unique Foldable Design: Offers unparalleled portability and a unique user experience with a compact form factor when folded.
  • Lighter and Thinner: Significantly more comfortable to hold and carry around due to its lower weight and slimmer profile.
  • Slightly Better Performance (Benchmark): Scores slightly higher in benchmarks for improved gaming experience.
  • Side-Mounted Fingerprint Sensor: Offers a more convenient and ergonomic unlocking experience.
  • Wider Angle Lens: The inclusion of a dedicated wide angle lens.

Practical Implications: The Z Flip3 is designed for users who prioritize portability, a unique form factor, and a stylish design with good performance.

Significant Trade-offs:

  • S21 Ultra: Bulkier and heavier, sacrificing portability for superior specs.
  • Z Flip3: Lacks the camera versatility and battery life of the S21 Ultra.

3. User Profiles & Recommendations

Samsung Galaxy S21 Ultra 5G Ideal Users:

  • Photography Enthusiasts: Users who want the best possible camera system with zoom capabilities.
  • Power Users: Users who require top performance, multitasking, and demanding apps.
  • Media Consumers: Users who enjoy watching high-resolution videos and require a vibrant, bright display.
  • Professionals: Users who need a reliable device with long battery life, superior screen, great speakers and camera.

Use Cases:

  • Professional photography and videography
  • Gaming and resource-intensive tasks
  • Outdoor use in bright sunlight due to higher display brightness
  • Frequent travelers who need long battery life

Samsung Galaxy Z Flip3 5G Ideal Users:

  • Fashion-Conscious Users: Users who value a unique, stylish device that makes a statement.
  • Users Prioritizing Portability: Users who want a compact phone that easily fits in pockets or small bags.
  • Social Media Creators: Users who require a unique form factor for content creation and social media usage.
  • Users who like the folding experience: Users who want a unique, foldable experience with a smaller form factor when not in use.

Use Cases:

  • Easy one-handed operation when folded
  • Taking quick photos using the outer display
  • Selfie and video blogging with the phone folded
  • Users who value portability

4. Decision Framework

Key Questions for Buyers:

  1. Do you prioritize portability and a unique design over raw specifications? If yes, the Z Flip3 is compelling. If not, the S21 Ultra may be better.
  2. How important is camera quality and versatility? If you're a heavy user of the camera, the S21 Ultra is superior.
  3. Do you need all-day battery life without frequent charging? The S21 Ultra provides much better battery life due to the larger battery capacity.

Scenario-Based Recommendations:

  • For the Professional Photographer: Choose the S21 Ultra for its superior camera system, including telephoto and macro lenses.
  • For the Frequent Traveler: Choose the S21 Ultra for its longer battery life.
  • For the Casual User who values a stylish and portable phone: Choose the Z Flip3 for its portability, unique design and overall good experience.
  • For the Power User who cares about Raw Performance: Choose the Z Flip3 for its better chipset and benchmarks.

My Choice

If I were choosing between these two phones, I would choose the Samsung Galaxy S21 Ultra 5G. While the Z Flip3's foldable design is certainly innovative and very practical in terms of portability, my personal needs and preferences lean more towards the S21 Ultra's strengths.

Here's why:

  1. Camera Versatility: As someone who enjoys photography, the S21 Ultra's superior camera system, with its multiple zoom lenses, higher resolution sensors, and additional shooting features, would be invaluable to me.
  2. Display Quality: I consume a lot of media on my phone, and the S21 Ultra's higher resolution, brighter display, and better color accuracy would enhance my viewing experience significantly.
  3. Battery Life: I often find myself away from a charger for long periods, and the S21 Ultra's larger battery capacity would give me peace of mind and reduce the need to constantly worry about battery levels.
  4. Performance: As a power user, I often use several apps simultaneously and play demanding games. The additional RAM and the higher AnTuTu scores would allow for smoother multitasking and gameplay.

While I acknowledge the Z Flip3's appeal as a stylish, portable phone with unique design, its weaker camera, smaller battery, and lack of advanced features are deal-breakers for me. The S21 Ultra, while bulkier and heavier, offers a more complete and powerful package that caters better to my specific usage patterns. In my opinion, the trade-offs for the superior performance and camera are worth the extra bulk and weight.

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.