Samsung Galaxy S21 Ultra 5G vs Samsung Galaxy Z Fold5 - Detailed Phone Comparison

Detailed Comparison

Specification

General

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

Physical

Volume 111.09 cm³ 122.74 cm³
Screen Size to Weight Ratio 3 "/g 3 "/g
Weight 227 g 253 g
Height 165.1 mm 154.9 mm
Width 75.6 mm 129.9 mm
Thickness 8.9 mm 6.1 mm
Foldable Design No Yes
Available Colors
  • Phantom Black
  • Phantom Silver
  • Phantom Titanium
  • Phantom Navy
  • Phantom Brown
  • Navy
  • Blue
  • Phantom Black
  • Gray
  • Cream
  • Icy Blue

Display

Screen Size 6.8 " 7.6 "
Resolution 1440 x 3200 1812 x 2176
Aspect Ratio 20:9 16:9
Screen-to-Body Ratio 89.4 % 91.1 %
Pixel Density 515 PPI 373 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness N/A N/A
HBM Brightness N/A N/A
Peak Brightness 1500 nits N/A

Hardware

Battery Capacity per Screen Area 108.13 mAh/in² 76.18 mAh/in²
Battery Density 45.01 mAh/cm³ 35.85 mAh/cm³
Battery Capacity 5000 mAh 4400 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 17

Comparison Summary

1. Specifications Comparison

Here's a detailed comparison of the Samsung Galaxy S21 Ultra 5G and Samsung Galaxy Z Fold5, highlighting the practical implications of their specifications:

Design

FeatureSamsung Galaxy S21 Ultra 5GSamsung Galaxy Z Fold5Practical Impact
Form FactorStandardFoldableZ Fold5 offers a larger screen that folds for portability, S21 Ultra has a traditional, non-folding design
Dimensions165.1 × 75.6 × 8.9 mm154.9 × 129.9 × 6.1 mmS21 Ultra is taller and thicker, while Z Fold5 is significantly wider when unfolded, more compact when folded.
Weight227g253gS21 Ultra is noticeably lighter, making it more comfortable for one-handed use and extended periods.

Display

FeatureSamsung Galaxy S21 Ultra 5GSamsung Galaxy Z Fold5Practical Impact
Size6.8"7.6"Z Fold5 has a significantly larger screen, providing a more immersive experience for media consumption and multitasking.
Resolution1440x32001812x2176S21 Ultra has a higher pixel count, resulting in sharper text and images on its smaller display.
PPI515373S21 Ultra offers a noticeably sharper and clearer image due to its higher pixel density.
TechnologyAMOLEDUnspecifiedS21 Ultra's AMOLED provides superior blacks, contrast, color accuracy, and power efficiency for dark mode. Z Fold 5's display technology is not specified.
Refresh Rate120Hz120HzBoth offer smooth scrolling and animations.
Brightness1500 nits0 nitsS21 Ultra has significantly better screen visibility in bright, outdoor conditions. Z Fold 5's brightness is not specified.

Performance

FeatureSamsung Galaxy S21 Ultra 5GSamsung Galaxy Z Fold5Practical Impact
ChipsetExynos 2100 (5 nm)Qualcomm Snapdragon 8 Gen 2 (4 nm)Z Fold5 offers a newer and more powerful chipset, resulting in better overall performance and power efficiency.
Antutu Score749,0001,538,914Z Fold5 demonstrates significantly higher performance in benchmarks, translating to faster app loading and smoother multitasking.
GPUMali-G78 MP14Adreno 740Z Fold5's GPU has better graphics rendering capability, offering an enhanced gaming and graphical experience.

Battery

FeatureSamsung Galaxy S21 Ultra 5GSamsung Galaxy Z Fold5Practical Impact
Capacity5000mAh4400mAhS21 Ultra's larger battery likely provides longer battery life.
Charging25W Fast Charging25W Fast ChargingBoth phones support the same fast charging speed.
FeaturesReverse charging, Wireless charging 15W, Reverse wireless charging 9WBypass Charging, Reverse charging, Wireless charging 15W, Reverse wireless charging 4.5WS21 Ultra offers higher reverse wireless charging speed while Z Fold5 offers bypass charging when using the phone while plugged in to reduce battery heat.

Camera

FeatureSamsung Galaxy S21 Ultra 5GSamsung Galaxy Z Fold5Practical Impact
Main Camera108MP, f/1.8, 1/1.33", 0.80µm50MP, f/1.8, 1/1.57", 1.00µmS21 Ultra has a higher resolution sensor, while Z Fold5 has larger pixels, potentially better low-light performance.
Telephoto + Portrait10.8MP, f/2.4, 1/2.65", 1.22µmNoneS21 Ultra features dedicated telephoto and portrait lenses offering more zoom capability and portrait shooting versatility.
Selfie Camera44MP, f/2.2, 1/2.65", 0.70µm10MP, f/2.2, 1/3.2", 1.22µmS21 Ultra has significantly higher selfie camera resolution, the Z Fold5 features larger pixel size in the selfie sensor.
Telephoto Lens10.8MP, f/4.9, 1/2.65", 1.22µm10MP, f/2.4, Unspecified, 1.00µmZ Fold5's telephoto lens has a wider aperture allowing for better low light shooting.
Wide Angle LensNone12MP, f/2.2, Unspecified, 1.12µmZ Fold5 has a dedicated wide-angle camera for expansive shots.
Wide Angle + Macro12.2MP, f/2.2, 1/2.55", 1.40µmNoneS21 Ultra has a dedicated macro camera for detailed close-up shots.
VideoUp to 8K@24fps, multiple 4K optionsUp to 8K@30fps, multiple 4K optionsBoth capable of high-quality video recording, Z Fold5 has higher 8K FPS.
DxOMark Mobile Score115128Z Fold5's camera is rated higher overall for mobile photography and videography
DxOMark Selfie Score135Not AvailableS21 Ultra's selfie camera scored highly on DxOMark.

2. Key Differences Analysis

Samsung Galaxy S21 Ultra 5G Advantages:

  • Sharper Display: Higher pixel density (515 PPI vs. 373 PPI) leads to a significantly sharper display, especially for text and detailed images.
  • Superior Display Visibility: Higher brightness (1500 nits vs Unspecified ) makes it much better for outdoor use in bright sunlight.
  • Potentially Longer Battery Life: Larger battery capacity (5000mAh vs 4400mAh) may provide better endurance.
  • More Versatile Camera System: Includes dedicated Telephoto + Portrait and Wide Angle + Macro lens options offering more shooting flexibility.
  • High-Quality Selfie Camera: 44MP front-facing camera.
  • Hi-Res Audio, Noise cancellation microphone Superior audio recording features.
  • Lighter Weight: More comfortable for prolonged use and one-handed operation.
  • Higher Reverse Wireless Charging Allows for faster charging of accessories.

Samsung Galaxy Z Fold5 Advantages:

  • Larger Foldable Display: Offers a significantly larger screen when unfolded, ideal for multitasking, media consumption, and immersive experiences.
  • More Powerful Performance: Newer Snapdragon 8 Gen 2 chipset leads to faster app loading, better multitasking, and improved gaming performance.
  • Improved Main Camera DxOMark Score: Higher score suggests better overall camera performance.
  • Newer Wi-Fi Standard: Faster speeds and improved connectivity.
  • eSIM Support: Offers additional connectivity options for digital carrier switching
  • Bypass Charging: Reduced heat when charging and using phone.
  • Wide Angle Lens: Provides options for wider shots.

Trade-offs:

  • The Z Fold5 trades portability for a larger screen and cutting-edge performance, with a higher weight and price.
  • The S21 Ultra offers a sharper and brighter screen in a more traditional form factor at the expense of the foldable's unique display and processing capabilities.
  • The Z Fold5 does not have a dedicated Telephoto + Portrait and Wide Angle + Macro lens.
  • The S21 Ultra has superior battery capacity for longer usage without charging.
  • The Z Fold5 has superior Wi-Fi connectivity.

3. User Profiles & Recommendations

Ideal Users for Samsung Galaxy S21 Ultra 5G:

  • Photography Enthusiasts: Users who value a versatile camera system with dedicated telephoto, portrait, macro, and high-resolution selfie capabilities.
  • Outdoor Users: Those who need a bright screen that is easily visible in sunlight.
  • One-Handed Use Preference: Individuals who prefer a more traditional smartphone design and comfortable single-hand use.
  • Audio Recording Enthusiasts Users that need quality audio from the microphone.
  • Price Conscious Users Users that want high level features but are more conscious of price.

Specific Use Cases for S21 Ultra 5G:

  • Professional photography and videography.
  • Outdoor activities such as hiking, where visibility is key.
  • Everyday communication and social media usage.
  • Users who need advanced audio recording capabilities.

Ideal Users for Samsung Galaxy Z Fold5:

  • Power Users: Users who frequently multitask, consume media, or use productivity apps on their mobile device.
  • Tech Enthusiasts: Early adopters who want the latest technology and unique form factors.
  • Gaming Enthusiasts: Those looking for the best mobile gaming experience.
  • Business Professionals: Those who need a larger screen for presentations, spreadsheets, or document editing.
  • eSIM Users Those that need to switch between digital carriers.

Specific Use Cases for Z Fold5:

  • Multitasking with multiple apps running side-by-side.
  • Watching videos and movies on a larger display.
  • Mobile gaming with superior graphical performance.
  • Reading and editing documents on a tablet-sized screen.
  • Traveling in areas where digital carrier switching is beneficial.

Price-to-Value Ratio:

  • The S21 Ultra is a more budget friendly option, still offering high level features and a great overall experience. The Z Fold 5 is much more expensive and may not be in the budget of many users.

4. Decision Framework

Key Questions for Buyers:

  1. Do you need a foldable phone with a large display or prefer a traditional form factor? This is the fundamental difference.
  2. Is camera versatility and selfie quality a higher priority than mobile gaming or multitasking performance? Consider what features are most important.
  3. Is a larger price point something you are ok with for a foldable or are you looking for a high performance phone that is more budget friendly? Consider your budget and how that aligns with features.

Scenario-Based Recommendations:

  • Scenario 1: Photography on a Budget: Choose the Samsung Galaxy S21 Ultra 5G. It offers an excellent camera system, great display, and is more budget friendly than the Z Fold5.
  • Scenario 2: Maximum Productivity: Choose the Samsung Galaxy Z Fold5. The large foldable screen allows for optimal multitasking and enhanced productivity.
  • Scenario 3: Tech Enthusiast: Choose the Samsung Galaxy Z Fold5. It offers the newest technology, unique foldable form factor, and best performance.
  • Scenario 4: Outdoor Usage: Choose the Samsung Galaxy S21 Ultra 5G for its superior screen brightness.

My Choice

If I were to choose between these two phones, I would pick the Samsung Galaxy Z Fold5. While the S21 Ultra has a better display sharpness and more comprehensive camera system, the Z Fold5's large foldable screen, superior performance, and modern features like Wi-Fi 7 and bypass charging outweigh those advantages for my use case. I do not require the level of zoom and macro capabilities of the S21 Ultra and prefer the large screen and enhanced productivity the Z Fold5 offers. The higher price is a trade-off I am willing to make for the improved overall performance, unique form factor, and features.

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
  • Technical storytelling
  • User-centric technology insights

Bridging technical complexity with engaging, accessible narratives.