Samsung Galaxy S21 Ultra 5G vs Samsung Galaxy Z Flip5 - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 August 11, 2023
Release Year 2021 2023

Physical

Volume 111.09 cm³ 81.91 cm³
Screen Size to Weight Ratio 3 "/g 3.58 "/g
Weight 227 g 187 g
Height 165.1 mm 165.1 mm
Width 75.6 mm 71.9 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
  • Yellow
  • Blue
  • Green
  • Graphite
  • Gray
  • Mint
  • Lavender
  • Cream

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 % 85.5 %
Pixel Density 515 PPI 425 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness N/A N/A
HBM Brightness N/A N/A
Peak Brightness 1500 nits 1750 nits

Hardware

Battery Capacity per Screen Area 108.13 mAh/in² 82.42 mAh/in²
Battery Density 45.01 mAh/cm³ 45.17 mAh/cm³
Battery Capacity 5000 mAh 3700 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Qualcomm SM8550-AC Snapdragon 8 Gen 2 (4 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (1x3.36 GHz Cortex-X3 & 2x2.8 GHz Cortex-A715 & 2x2.8 GHz Cortex-A710 & 3x2.0 GHz Cortex-A510)
GPU Mali-G78 MP14 - International Adreno 740

Connectivity

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

Software

Operating System Android Android
Initial OS Version 11 13
Maximum OS Version 15 14

Comparison Summary

Smartphone Comparison: Samsung Galaxy S21 Ultra 5G vs. Samsung Galaxy Z Flip5

1. Specifications Comparison

FeatureSamsung Galaxy S21 Ultra 5GSamsung Galaxy Z Flip5Practical Impact
Design
Form FactorStandardFoldableZ Flip5 offers a unique, compact foldable design. S21 Ultra is a traditional slab phone.
Dimensions165.1 x 75.6 x 8.9 mm165.1 x 71.9 x 6.9 mmS21 Ultra is wider and thicker, making Z Flip5 more pocketable when folded. Both are same height.
Weight227g187gZ Flip5 is lighter, enhancing comfort for extended use. S21 Ultra feels more substantial.
Display
Size6.8"6.7"Both offer similar large screen sizes, S21 Ultra is negligibly larger.
Resolution1440x32001080x2640S21 Ultra has noticeably sharper visuals due to higher pixel density.
PPI515425S21 Ultra displays text and images with greater clarity and detail.
TechnologyAMOLEDUnknownS21 Ultra offers deeper blacks, higher contrast, and better power efficiency, but we do not know Z Flip5's tech.
Refresh Rate120Hz120HzBoth offer smooth scrolling and animations.
Brightness1500 nits1750 nitsZ Flip5 is easier to view in bright sunlight.
Performance
ChipsetExynos 2100 (5nm)Snapdragon 8 Gen 2 (4nm)Z Flip5 offers significantly faster performance and better power efficiency.
AnTuTu Score749,0001,531,700Z Flip5 handles demanding apps and games more smoothly.
GPUMali-G78 MP14Adreno 740Z Flip5 has better graphics processing capabilities for gaming and graphics-intensive tasks.
Camera
Main Camera108MP, f/1.812MP, f/1.8S21 Ultra captures higher resolution images with more detail, but Z Flip5 has larger pixels for better low-light.
Telephoto + Portrait10.8MP, f/2.4NoneS21 Ultra has dedicated telephoto camera for portrait and zoom capabilities.
Selfie Camera44MP, f/2.210MP, f/2.4S21 Ultra takes significantly higher-resolution selfies; wider aperture for better low-light performance in selfies.
Telephoto Lens10.8MP, f/4.9NoneS21 Ultra has a dedicated telephoto lens for zoom.
Wide Angle lensNone12MP, f/2.2Z Flip5 has a dedicated ultra-wide lens for expansive shots.
Wide Angle + Macro12.2MP, f/2.2NoneS21 Ultra has a dedicated lens for wide and macro photography.
VideoUp to 8KUp to 4KS21 Ultra captures higher resolution videos. Both have similar stabilization and slow-motion.
DXOMARK Mobile115 (Photo: 121, Video: 100)127 (Photo: 132, Video: 128)Z Flip5 has a significantly better camera performance, especially in video recording.
DXOMARK Selfie135 (Photo: 133, Video: 140)Not TestedS21 Ultra scores great in selfie, but Z Flip5 has not been tested.
Battery
Capacity5000mAh3700mAhS21 Ultra is likely to offer significantly longer battery life.
Charging25W Fast Charging25W Fast ChargingBoth support 25W fast charging, time will vary depending on battery size.
Wireless Charging15W Wireless15W Fast WirelessBoth offer wireless charging, Z Flip5 has fast wireless charging.
Reverse Charging9W Reverse Wireless4.5W Reverse WirelessS21 Ultra can reverse charge other devices faster, even if it has less features.
Software
OSAndroid 11 (up to 15)Android 13 (up to 14)Z Flip5 ships with a newer OS, but S21 Ultra can be updated further.
Connectivity
WiFiWiFi 6WiFi 6Both phones support similar WiFi standards.
Bluetooth5.2 LE5.3 LEZ Flip5 has a newer, more efficient Bluetooth version.
GPSDual bandDual bandZ Flip5 has more satelite systems, it may provide more accurate positioning.
SIMDual Nano SIMNano SIM + eSIMZ Flip5 offers the flexibility of an eSIM, S21 Ultra has dual physical SIMs.
Storage
Internal128/256/512 GB256/512 GBBoth offer ample storage, S21 Ultra offers a cheaper 128 GB option.
RAM12/16 GB8 GBS21 Ultra excels in multitasking and RAM-intensive applications with 16GB option.
ExpandableNoNoNeither phone offers expandable storage.
Audio
QualityDolby Atmos, Hi-Res, Noise CancellationStereo SpeakersS21 Ultra provides a better audio experience with Dolby Atmos and a dedicated noise cancellation microphone for clear calls.
Security
FingerprintBasic in-screenSide-mountedZ Flip5's side-mounted sensor is more convenient for quick unlocks.

2. Key Differences Analysis

Samsung Galaxy S21 Ultra 5G Advantages:

  • Superior Display: Higher resolution and pixel density for a sharper, more detailed viewing experience.
  • Better Camera Versatility: Features a telephoto lens, wide angle + macro, and significantly higher resolution main and selfie cameras. Also features more manual camera controls
  • Larger Battery: Significantly higher battery capacity for extended usage without needing to recharge.
  • More RAM: Available with up to 16GB of RAM, providing smoother multitasking and better performance in demanding applications.
  • Enhanced Audio: Includes Dolby Atmos, Hi-Res Audio, and a noise cancellation microphone for superior audio output and clearer calls.

    Practical Implications: The S21 Ultra is ideal for users who prioritize visual quality, photography versatility, battery life, and audio capabilities.

Samsung Galaxy Z Flip5 Advantages:

  • Unique Foldable Design: Highly pocketable and fashionable form factor with a cover screen for quick interactions.
  • Significantly Better Performance: A newer chipset with a 4nm process for much faster performance in all areas.
  • Higher Display Brightness: Better outdoor visibility with 250 nits more brightness.
  • Newer Bluetooth Version: Supports Bluetooth 5.3 for more efficient and reliable connections.
  • Improved Camera Performance: DXOMARK shows better photo and video scores.
  • eSIM Support: Allows for digital carrier switching without physical SIM cards.

    Practical Implications: The Z Flip5 is tailored for users who prioritize portability, performance, style, and want to have a modern phone.

Significant Trade-offs:

  • S21 Ultra: Bulkier and heavier compared to the Z Flip5. Older chipset and lower benchmark scores.
  • Z Flip5: Smaller battery capacity resulting in shorter battery life. Less camera versatility. Fewer camera modes and less control.

3. User Profiles & Recommendations

Samsung Galaxy S21 Ultra 5G:

  • Ideal User: Power users, photography enthusiasts, media consumers, and those who value long battery life.
  • Use Cases:
    • Professional photography and videography.
    • Long days without needing to charge.
    • Heavy multitasking and demanding gaming.
    • Immersive media consumption.
  • Price-to-Value: Good value for users seeking top-tier camera features, display quality, and battery capacity.

Samsung Galaxy Z Flip5:

  • Ideal User: Style-conscious users, those who value portability, and anyone who wants a unique modern smartphone experience.
  • Use Cases:
    • Fashion-forward individuals who prioritize aesthetics and compactness.
    • Users who appreciate one handed use, even while unfolded.
    • Users looking for better performance for gaming.
    • Users who want a compact phone that still provides flagship-like features.
  • Price-to-Value: A higher price point for the innovative foldable form factor, better performance, and updated modern features.

4. Decision Framework

Here are three key questions buyers should consider:

  1. What is your priority for phone size and design?
    • If a compact, pocketable design is preferred, the Z Flip5 is a clear winner. If a more traditional large slab phone is fine, then the S21 Ultra is better.
  2. How important is camera versatility and performance?
    • For comprehensive camera features (including more lens options and higher resolution capabilities), the S21 Ultra is the better choice. But for overall photo and especially video quality, the Z Flip 5 is superior.
  3. What are your needs regarding battery life, performance and budget?
    • If battery life and large screen for media consumption are crucial, the S21 Ultra is a better option. For better performance and a newer phone, the Z Flip5 is recommended, but users will have to deal with a smaller battery and higher price.

Scenario-Based Recommendations:

  • Scenario 1: Professional Photographer: Choose the Galaxy S21 Ultra 5G for its telephoto lens, wide + macro, higher resolution cameras, more manual camera controls, and video modes.

  • Scenario 2: On-the-Go User: The Galaxy Z Flip5 is the superior choice for its pocketable design, better performance and unique features.

  • Scenario 3: Budget-Conscious Media Consumer: The Galaxy S21 Ultra 5G offers a large screen, great audio, and battery, providing a better all round experience.

Personal Choice and Explanation:

If I had to choose, I would select the Samsung Galaxy Z Flip5. While the S21 Ultra offers a better camera versatility, battery and display resolution, the Z Flip5's performance, modern features and, most importantly, its innovative foldable design makes it more compelling to me. I value the portability and unique functionality of the flip design, especially since I often use my phone one-handed. The significantly better performance provided by the Snapdragon 8 Gen 2, the brighter screen, and the better camera performance is worth the trade-off in battery size and display sharpness for my daily usage patterns. The Z Flip5 feels like a more modern and exciting device, pushing the boundaries of smartphone design.

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.