Samsung Galaxy S21 5G vs Apple iPhone 16 Pro - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 September 20, 2024
Release Year 2021 2024

Physical

Volume 85.33 cm³ 88.78 cm³
Screen Size to Weight Ratio 3.67 "/g 3.17 "/g
Weight 169 g 199 g
Height 151.7 mm 149.6 mm
Width 71.2 mm 71.5 mm
Thickness 7.9 mm 8.3 mm
Foldable Design No No
Available Colors
  • Phantom White
  • Phantom Gray
  • Phantom Violet
  • Phantom Pink
  • Black Titanium
  • White Titanium
  • Natural Titanium
  • Desert Titanium

Display

Screen Size 6.2 " 6.3 "
Resolution 1080 x 2400 1206 x 2622
Aspect Ratio 20:9 19.5:9
Screen-to-Body Ratio 85.9 % 90.9 %
Pixel Density 421 PPI 460 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness N/A 1000 nits
HBM Brightness N/A 2000 nits
Peak Brightness 1300 nits N/A

Hardware

Battery Capacity per Screen Area 104.06 mAh/in² 90.25 mAh/in²
Battery Density 46.88 mAh/cm³ 40.35 mAh/cm³
Battery Capacity 4000 mAh 3582 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Apple A18 Pro (3 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Hexa-core (2x4.05 GHz + 4x2.42 GHz)
GPU Mali-G78 MP14 - International Apple GPU (6-core graphics)

Connectivity

USB Version 3.2 3.2
OTG Support 1
DisplayPort 1
DisplayPort Version N/A N/A
USB Features USB Type-C 3.2, OTG USB Type-C 3.2, Gen 2, DisplayPort

Software

Operating System Android iOS
Initial OS Version 11 18
Maximum OS Version 15

Comparison Summary

1. Specifications Comparison

Design

FeatureSamsung Galaxy S21 5GApple iPhone 16 ProPractical Impact
Dimensions151.7 × 71.2 × 7.9 mm149.6 × 71.5 × 8.3 mmS21 is slightly taller, iPhone 16 Pro is slightly thicker; Minimal difference in hand feel.
Weight169g199gS21 is noticeably lighter; More comfortable for long periods.

Display

FeatureSamsung Galaxy S21 5GApple iPhone 16 ProPractical Impact
Size6.2"6.3"Almost identical screen size, negligible difference.
Resolution1080x24001206x2622iPhone 16 Pro is noticeably sharper, resulting in clearer text and images.
PPI421460iPhone 16 Pro has a slightly sharper display.
TechnologyAMOLEDOLEDBoth offer vibrant colors and deep blacks.
Refresh Rate120Hz120HzBoth provide smooth scrolling and animations.
Brightness1300 nits2000 nitsiPhone 16 Pro is much more visible in direct sunlight.

Performance

FeatureSamsung Galaxy S21 5GApple iPhone 16 ProPractical Impact
ChipsetExynos 2100 (5 nm)Apple A18 Pro (3 nm)Apple A18 Pro is significantly faster and more efficient; Faster app loading, smoother multitasking and gaming on iPhone.
AnTuTu Score749,1001,947,255iPhone 16 Pro delivers much higher performance for demanding tasks.
GPUMali-G78 MP14Apple GPU (6-core)iPhone 16 Pro has a superior GPU.

Camera

FeatureSamsung Galaxy S21 5GApple iPhone 16 ProPractical Impact
Main Camera12MP, f/1.8, 1/1.76"48MP, f/1.78, 1/1.3"iPhone 16 Pro captures much more detailed images with better low-light performance.
Telephoto + Portrait64MP, f/2.0, 1/1.72"N/AS21 has a dedicated telephoto/portrait lens.
Selfie Camera10MP, f/2.2, 1/3.2"12MP, f/1.9iPhone 16 Pro captures slightly better selfies.
Telephoto LensN/A12MP, f/2.8iPhone 16 Pro offers more versatile zoom capabilities.
ToF 3D sensorN/A0.8MPiPhone 16 Pro has better depth sensing.
Wide Angle + Macro12.2MP, f/2.2, 1/2.55"48MP, f/2.2, 1/2.55"iPhone 16 Pro captures higher resolution ultra-wide images.
VideoUp to 8K@24fpsUp to 4K@120fpsS21 offers 8K video but iPhone 16 Pro has a wider range of frame rates and features in 4K.
DXOMarkMobile: 111, Selfie: 132N/AS21's camera performance has been rated while iPhone 16 Pro's is not available.

Battery

FeatureSamsung Galaxy S21 5GApple iPhone 16 ProPractical Impact
Capacity4000mAh3582mAhS21 has a slightly larger battery.
Charging25W Fast Charging25W Fast ChargingSimilar charging speeds
Features15W Wireless, Reverse Charging25W WirelessS21 offers more versatile charging options; iPhone has slightly faster wireless charging.

2. Key Differences Analysis

Samsung Galaxy S21 5G Advantages

  • Lighter Weight: More comfortable to hold for extended periods.
  • Telephoto + Portrait Camera: Dedicated sensor for zoom/portrait shots.
  • Reverse Wireless Charging: Can charge other devices wirelessly.
  • Slightly Larger Battery: Could offer slightly better battery life.
  • Lower cost compared to newer iPhones.

Apple iPhone 16 Pro Advantages

  • Significantly Faster Chipset: Much better performance for all tasks, especially gaming and demanding apps.
  • Higher Resolution Display: Sharper and more detailed visuals.
  • Much Higher Brightness: Significantly better screen visibility in bright sunlight.
  • Superior Main Camera: Better low-light performance, more detail, and advanced features.
  • Telephoto Lens: Greater zoom capabilities.
  • ToF 3D sensor: Better depth sensing.
  • Newer Bluetooth & WiFi: Offers better connectivity, speeds, and reliability.
  • eSIM Support: Offers digital SIM convenience.
  • Significantly More Internal Storage Options: Up to 1TB of internal storage.
  • More advanced video recording: Higher 4K framerates and newer recording options.
  • Better build quality
  • More advanced software: Updated iOS features and future support.

Trade-offs

  • S21: Offers more versatile charging, but with older chipset and weaker camera.
  • iPhone 16 Pro: Significantly more expensive, heavier, and slightly smaller battery.

3. User Profiles & Recommendations

Samsung Galaxy S21 5G Ideal Users

  • Budget-Conscious Users: Those who want a good phone without the highest price tag.
  • Users Who Value Lightness: Those who prioritize comfort during prolonged use.
  • Users who like to capture portrait shots
  • Users who value versatile charging: Wireless charging or reverse wireless charging.

Specific Use Cases:

  • Everyday use for browsing, social media, and basic photography.
  • Occasional gaming or moderate app usage.
  • Users who prioritize a comfortable and lightweight feel.

Apple iPhone 16 Pro Ideal Users

  • Performance Enthusiasts: Gamers, professionals, or anyone needing high performance.
  • Photography and Videography Buffs: Those who want the best possible image and video quality.
  • Users who prioritize display quality: Enjoying bright, sharp screens.
  • Tech Enthusiasts: Who value the latest technology and features.
  • Users in the Apple Ecosystem: Those who use other Apple products.
  • Users who want better connectivity and reliability.
  • Users who need lots of storage: Up to 1TB of internal storage is available.

Specific Use Cases:

  • Gaming and graphic-intensive tasks.
  • Professional-level photography and videography.
  • Outdoor use in bright sunlight where screen brightness is critical.
  • Users who want the best possible performance for all apps and tasks.

Price-to-Value Ratio

  • Samsung Galaxy S21 5G: Offers good value for the price, suitable for users with basic needs.
  • Apple iPhone 16 Pro: Higher price tag but provides premium features and performance, justifying the cost for its target audience.

4. Decision Framework

Key Questions to Consider

  1. What is your budget? The iPhone 16 Pro is likely significantly more expensive than the S21.
  2. How important is performance for your use case? If gaming or demanding apps are frequent, the iPhone is a better choice.
  3. Do you prioritize portability, camera quality or connectivity? The S21 is lighter, but the iPhone has a superior camera and superior connectivity (WIFI & Bluetooth).

Scenario-Based Recommendations

  • Scenario 1: Casual User on a Budget: The Samsung Galaxy S21 5G provides a good overall experience at a lower cost.
  • Scenario 2: Mobile Gamer/Heavy User: The Apple iPhone 16 Pro offers a much faster experience that would make gaming smoother and more reliable.
  • Scenario 3: Photography Enthusiast: The Apple iPhone 16 Pro with its superior camera sensors, software, and video recording features should be the top choice.
  • Scenario 4: Outdoor Enthusiast: The Apple iPhone 16 Pro would be a better choice as its screen is significantly brighter in outdoor use.

My Choice and Why

Personally, I would choose the Apple iPhone 16 Pro. While the Samsung Galaxy S21 5G is a capable device, the iPhone 16 Pro offers significant advantages that align with my priorities, including a substantial boost in processing power, an improved display, significantly superior camera capabilities, better connectivity, higher storage options and a more modern software experience. The higher performance and better camera are major selling points for me, even if it means sacrificing a bit of battery capacity and paying a premium price. The enhanced screen brightness, and advanced features such as the 3D ToF sensor, also contribute to a superior user experience. The slight weight increase and slightly smaller battery capacity is acceptable considering the major overall benefits.

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.