Samsung Galaxy S21 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 85.33 cm³ 122.74 cm³
Screen Size to Weight Ratio 3.67 "/g 3 "/g
Weight 169 g 253 g
Height 151.7 mm 154.9 mm
Width 71.2 mm 129.9 mm
Thickness 7.9 mm 6.1 mm
Foldable Design No Yes
Available Colors
  • Phantom White
  • Phantom Gray
  • Phantom Violet
  • Phantom Pink
  • Blue
  • Phantom Black
  • Gray
  • Cream
  • Icy Blue

Display

Screen Size 6.2 " 7.6 "
Resolution 1080 x 2400 1812 x 2176
Aspect Ratio 20:9 16:9
Screen-to-Body Ratio 85.9 % 91.1 %
Pixel Density 421 PPI 373 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness N/A N/A
HBM Brightness N/A N/A
Peak Brightness 1300 nits N/A

Hardware

Battery Capacity per Screen Area 104.06 mAh/in² 76.18 mAh/in²
Battery Density 46.88 mAh/cm³ 35.85 mAh/cm³
Battery Capacity 4000 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

Smartphone Comparison: Samsung Galaxy S21 5G vs. Samsung Galaxy Z Fold5

1. Specifications Comparison

FeatureSamsung Galaxy S21 5GSamsung Galaxy Z Fold5Practical Impact
Design
Form FactorStandardFoldableZ Fold5 offers a larger screen when unfolded, but is bulkier when folded. S21 is more pocketable.
Dimensions151.7 × 71.2 × 7.9 mm154.9 × 129.9 × 6.1 mm (unfolded)S21 is more compact and easier to handle with one hand. Z Fold5 is significantly wider unfolded, a mini-tablet experience.
Weight169g253gS21 is much lighter, more comfortable for prolonged use. Z Fold5 is heavier, less convenient for carrying in pocket.
Display
Size6.2"7.6" (unfolded)Z Fold5 provides a significantly larger display area for media consumption, multitasking and gaming. S21 is better for single-handed use.
Resolution1080x24001812x2176Z Fold5 has a much sharper display and more screen real estate. S21 has lower resolution but still offers a clear picture.
Pixel Density (PPI)421373S21 has slightly sharper text and images due to the higher pixel density. Z Fold5 is less sharp, but has more screen area.
TechnologyAMOLEDNot specifiedS21 has deeper blacks and vibrant colors due to AMOLED tech. Z Fold5 display technology is unknown but likely AMOLED based on Samsung's foldable line.
Refresh Rate120Hz120HzBoth offer smooth scrolling and animations.
Brightness1300 nits0 nitsS21 is significantly better for outdoor use in bright sunlight. Z Fold5 brightness is missing but likely lower.
Performance
ChipsetExynos 2100 (5nm)Snapdragon 8 Gen 2 (4nm)Z Fold5 has a much newer and more powerful chip, resulting in faster app loading, smoother multitasking, and better gaming performance.
AnTuTu Score749,1001,538,914Z Fold5 has significantly higher benchmark scores, better performance overall.
GPUMali-G78 MP14Adreno 740Z Fold5 has a much more capable GPU for graphically intensive tasks.
Battery
Capacity4000 mAh4400 mAhZ Fold5 should provide slightly better battery life due to the higher capacity.
Charging25W Fast Charging25W Fast ChargingBoth have the same 25W fast charging, moderate charging speeds.
FeaturesWireless 15W, Reverse Wireless 4.5WWireless 15W, Reverse Wireless 4.5W, Bypass ChargingBoth have similar battery features with Z Fold5 having an additional Bypass Charging feature, useful when plugged in for long periods.
Camera
Standard12MP, f/1.8, 1/1.76", 1.8µm50MP, f/1.8, 1/1.57", 1.0µmZ Fold5 takes higher resolution pictures with a larger sensor, better low light results but smaller pixel size.
Telephoto + Portrait64MP, f/2.0, 1/1.72", 0.8µmNot AvailableS21 has a dedicated telephoto camera for zoom shots and portrait photos.
Selfie10MP, f/2.2, 1/3.2", 1.22µm10MP, f/2.2, 1/3.2", 1.22µmBoth have similar selfie cameras.
Telephoto LensNot Available10MP, f/2.4, 1.0µmZ Fold5 offers a dedicated telephoto lens.
Wide Angle LensNot Available12MP, f/2.2, 1.12µmZ Fold5 offers an ultrawide lens for capturing expansive scenes.
Wide Angle + Macro12.2MP, f/2.2, 1/2.55", 1.4µmNot AvailableS21 offers a macro lens for close-up shots.
VideoUp to 8K@24fpsUp to 8K@30fpsBoth record high-quality videos with EIS, but Z Fold5 has a higher 8K framerate.
DxOMark Mobile111 Main, 118 Photo, 90 Video128 Main, 127 Photo, 123 VideoZ Fold5 scores higher in all mobile camera categories.
DxOMark Selfie132 Main, 125 Photo, 145 VideoNot AvailableS21 has been rated for selfie performance on DxOMark.
Camera FeaturesMultiple modesMultiple modes including AI features, noise reductionZ Fold5 has some additional AI features for better photos and videos.
Software
OSAndroid 11 (upgradable to 15)Android 13 (upgradable to 17)Z Fold5 runs a newer Android version and will receive longer software support.
Connectivity
Wi-FiWi-Fi 6Wi-Fi 7Z Fold5 has faster Wi-Fi speeds and better connection stability.
BluetoothBluetooth 5.0Bluetooth 5.2Z Fold5 has a more modern Bluetooth version with improved range and power efficiency.
GPSMultipleMultiple + GLONASS (L1), BeiDou (B1)Z Fold5 has better location accuracy due to more satellite systems.
SIMDual SIM (Nano + Nano)Dual SIM (Nano + eSIM)Z Fold5 supports eSIM, offering greater flexibility.
Storage
Internal Storage128GB/256GB256GB/512GB/1024GBZ Fold5 offers much more storage capacity options.
RAM8GB12GBZ Fold5 has more RAM for better performance in multitasking.
Expandable StorageNoNoNeither phone supports expandable storage.
Audio
QualityDolby Atmos, Noise cancellation microphone, Stereo SpeakersDolby Atmos, Stereo SpeakersS21 has a noise cancellation microphone. Both have stereo speakers.
Security
FeaturesBasic fingerprintSide-mounted fingerprintZ Fold5 has a more modern fingerprint scanner.
Build Quality
ProtectionGorilla Glass VictusGorilla Glass Victus 2Both phones have similar screen protection tech.
Sensors
MultipleMultiple + GravityZ Fold5 has a gravity sensor.

2. Key Differences Analysis

Samsung Galaxy S21 5G Advantages:

  • More Compact and Lighter: Easier to handle and carry around.
  • Higher Pixel Density: Slightly sharper text and images.
  • Significantly Brighter Display: Better visibility in sunlight.
  • Telephoto + Portrait and Wide Angle + Macro Camera Lenses: More camera flexibility.
  • Noise Cancellation Microphone: Better call quality and recording.
  • Lower Weight: More convenient for prolonged use.
  • Lower Cost: More affordable for budget-conscious consumers.

Samsung Galaxy Z Fold5 Advantages:

  • Large Foldable Display: Offers a tablet-like experience, excellent for media consumption and multitasking.
  • Much More Powerful Chipset: Significantly better performance in benchmarks, gaming and demanding tasks.
  • Higher Resolution Main Camera: Better image quality, especially in good lighting.
  • Telephoto and Wide Angle Lens: More versatile in shooting different perspectives.
  • More RAM and Storage Options: Better performance in heavy multitasking.
  • Newer Android OS: Longer software support.
  • eSIM Support: More flexible carrier options.
  • Advanced Fingerprint Sensor: Convenient side-mounted reader.
  • Bypass Charging: Useful for long gaming sessions while plugged in.
  • Latest Connectivity Features: Faster Wi-Fi, Bluetooth and more GPS satellites.

Trade-offs:

  • Z Fold5: Higher price, heavier and bulkier, unknown brightness, less versatile camera setup without macro.
  • S21: Older chipset, smaller display, less storage and RAM, older OS and less software support.

3. User Profiles & Recommendations

Ideal User for Samsung Galaxy S21 5G:

  • Users who prioritize portability and one-handed use.
  • Those who need a reliable phone for daily tasks, social media, and photography.
  • Budget-conscious users seeking a high-quality phone without the premium price tag of foldables.
  • Users who value a brighter screen for outdoor visibility.
  • Users who want an all around camera experience including macro lens functionality.

Use Cases:

  • Everyday phone usage, social media browsing, casual gaming, and photography.
  • Outdoor enthusiasts who need a bright screen and a robust design.
  • Users who prefer a pocketable and lightweight phone.

Ideal User for Samsung Galaxy Z Fold5:

  • Users who want a large, immersive display for media consumption and multitasking.
  • Those who need a powerful device for gaming, productivity, and creative tasks.
  • Tech enthusiasts seeking the latest innovative technology and high-end performance.
  • Users that prioritize flexibility, a big screen and modern features.

Use Cases:

  • Professional users needing a larger display for documents, spreadsheets, and video editing.
  • Gamers wanting a powerful device for high-performance gaming.
  • Users who often multitask and appreciate the ability to view multiple apps at once.
  • People who want to use the phone as both a smartphone and a tablet.

4. Decision Framework

Key Questions for Buyers:

  1. What is my priority: Portability and one-handed use, or a large, immersive display?
  2. Do I need the latest performance, or is a slightly older, but capable chipset sufficient?
  3. What is my budget and value preference?

Scenario-Based Recommendations:

  • Scenario 1: Budget-Conscious & Practical User - If your primary needs are everyday use, portability, and a lower price, the Samsung Galaxy S21 5G is more suitable.
  • Scenario 2: Multitasking & Media Enthusiast - If you value a large display, cutting-edge performance, and are willing to pay a premium price, the Samsung Galaxy Z Fold5 is the better choice.
  • Scenario 3: Outdoor & Camera Focused User - If you need the best outdoor visibility and camera flexibility, the Samsung Galaxy S21 5G would be a great choice.
  • Scenario 4: Gaming and Heavy Task User - If you are a gamer or a heavy user the Samsung Galaxy Z Fold5 is the better choice.

My Choice

If I were to choose, I would pick the Samsung Galaxy Z Fold5. While the S21 5G has its merits, particularly its lighter weight, brighter display, and lower price point, the Z Fold5's significantly superior performance, versatile large display, and modern features align better with my typical use cases. The ability to use it as a tablet for media consumption and productivity, coupled with the powerful chipset for demanding applications, makes the Z Fold5 a more compelling device despite the compromises in portability and price. I acknowledge that the S21 is more practical for some users, especially those needing a bright display and macro camera but my workflow and needs are better suited to the Z Fold5.

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.