Samsung Galaxy S21 5G vs Google Pixel 9 Pro - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 September 9, 2024
Release Year 2021 2024

Physical

Volume 85.33 cm³ 93.51 cm³
Screen Size to Weight Ratio 3.67 "/g 3.17 "/g
Weight 169 g 199 g
Height 151.7 mm 152.8 mm
Width 71.2 mm 72 mm
Thickness 7.9 mm 8.5 mm
Foldable Design No No
Available Colors
  • Phantom White
  • Phantom Gray
  • Phantom Violet
  • Phantom Pink
  • Obsidian
  • Hazel
  • Porcelain
  • Rose Quartz

Display

Screen Size 6.2 " 6.3 "
Resolution 1080 x 2400 1280 x 2856
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 85.9 % 86.9 %
Pixel Density 421 PPI 495 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness N/A N/A
HBM Brightness N/A 2000 nits
Peak Brightness 1300 nits 3000 nits

Hardware

Battery Capacity per Screen Area 104.06 mAh/in² 118.42 mAh/in²
Battery Density 46.88 mAh/cm³ 50.26 mAh/cm³
Battery Capacity 4000 mAh 4700 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Google Tensor G4 (4 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (1x3.1 GHz Cortex-X4 & 3x2.6 GHz Cortex-A720 & 4x1.92 GHz Cortex-A520)
GPU Mali-G78 MP14 - International Mali-G715 MC7

Connectivity

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

Software

Operating System Android Android
Initial OS Version 11 14
Maximum OS Version 15 21

Comparison Summary

1. Specifications Comparison

Here's a detailed comparison of the Samsung Galaxy S21 5G and Google Pixel 9 Pro, focusing on the practical implications of their specifications:

FeatureSamsung Galaxy S21 5GGoogle Pixel 9 ProPractical Impact
Design
Dimensions151.7 × 71.2 × 7.9 mm152.8 × 72 × 8.5 mmPixel 9 Pro is slightly taller and thicker; S21 5G may feel more comfortable in smaller hands; Pixel 9 Pro has a marginally larger volume.
Weight169g199gS21 5G is significantly lighter, making it more comfortable for extended use and one-handed operation.
Display
Size6.2"6.3"Very similar size; negligible difference in viewing area.
Resolution1080x24001280x2856Pixel 9 Pro has a higher resolution, resulting in sharper and clearer images and text.
PPI421495Pixel 9 Pro has a noticeably sharper display with higher pixel density.
TechnologyAMOLEDOLEDBoth offer vibrant colors and deep blacks; negligible difference in viewing experience.
Refresh Rate120Hz120HzBoth offer smooth scrolling and animations.
Brightness1300 nits3000 nitsPixel 9 Pro display is much brighter, greatly improving outdoor visibility in direct sunlight.
Performance
ChipsetExynos 2100 (5 nm)Google Tensor G4 (4 nm)Pixel 9 Pro's chipset is newer and likely more efficient; translates to better overall performance, app loading and multitasking.
AnTuTu Score749,1001,148,512Pixel 9 Pro has a substantially higher benchmark score indicating significantly faster performance in everyday use and gaming.
GPUMali-G78 MP14Mali-G715 MC7Different GPU architectures; Pixel 9 Pro's GPU is designed for AI, machine learning and is more powerful and likely offers better gaming performance.
Battery
Capacity4000mAh4700mAhPixel 9 Pro's larger battery should provide longer battery life on a single charge, especially with demanding tasks.
Charging25W fast charging27W fast chargingBoth offer fast charging; Pixel 9 Pro has a slightly faster charging speed.
FeaturesWireless 15W, Reverse Wireless 4.5WWireless 21WPixel 9 Pro has faster wireless charging; S21 5G has reverse wireless charging.
Camera
Standard Lens12MP f/1.8 (1/1.76")50MP f/1.69 (1/1.3")Pixel 9 Pro captures more detailed images, performs better in low light due to larger sensor and wider aperture.
Telephoto Lens64MP f/2.0 (1/1.72")48MP f/2.8Pixel 9 Pro provides a dedicated telephoto lens for better zoomed images; S21 5G uses a high resolution sensor for telephoto, but is not a dedicated telephoto lens.
Selfie Lens10MP f/2.2 (1/3.2")42MP f/2.2Pixel 9 Pro's selfie camera captures more detailed and higher quality self-portraits.
Wide/Macro lens12.2MP f/2.2 (1/2.55")48MP f/1.7Pixel 9 Pro takes higher resolution wide/macro photos, offers better low light performance.
VideoUp to 8K@24fpsUp to 8K@30fpsBoth offer high-resolution video recording; Pixel 9 Pro offers smoother 8K recording due to higher frame rate and has more stabilization options
DXOMarkMobile: 111, Selfie: 132Not AvailableS21 5G camera performance is rated at a high level on DxoMark but Pixel 9 Pro doesn't have any rating.
Camera FeaturesMultipleMultiple + AI FeaturesPixel 9 Pro provides a more comprehensive suite of features, including AI enhancements. S21 5G has good standard features.
Software
OSAndroid 11 (up to 15)Android 14 (up to 21)Pixel 9 Pro has a newer OS with more up-to-date features, security updates, and longer support.
Connectivity
Wi-FiWi-Fi 6Wi-Fi 7Pixel 9 Pro has newer WiFi, offering faster speeds and improved network performance.
Bluetooth5.0 LE5.3 LEPixel 9 Pro's newer Bluetooth version supports more advanced features and better connection stability.
GPSMultipleMultiplePixel 9 Pro supports more satellite systems for better accuracy.
SIMDual Nano SIMNano SIM + eSIMPixel 9 Pro's eSIM option allows for greater flexibility in carrier switching, while S21 5G offers two physical SIMs.
Storage
Internal128/256 GB128/256/512/1024 GBPixel 9 Pro offers much greater storage options and capacity.
RAM8 GB16 GBPixel 9 Pro has more RAM, enabling smoother multitasking and better performance with demanding apps.
ExpandableNoNoNeither phone supports expandable storage.
Audio
QualityDolby Atmos, Stereo SpeakersStereo Speakers, 3 microphonesBoth offer good sound quality; S21 5G has Dolby Atmos, Pixel 9 Pro has 3 microphones.
Security
FeaturesBasic FingerprintBasic FingerprintBoth offer basic biometric security via fingerprint sensors.
Build
ProtectionGorilla Glass VictusGorilla Glass Victus 2Both offer good screen protection; Pixel 9 Pro uses a newer version of Gorilla Glass.
Sensors
SensorsMultipleMultiple + ThermometerBoth offer a comprehensive sensor suite; Pixel 9 Pro offers a thermometer, S21 5G includes a Compass.

2. Key Differences Analysis

Samsung Galaxy S21 5G Advantages:

  • Lighter Design: At 169g, it's significantly lighter than the Pixel 9 Pro, making it more comfortable for prolonged use and one-handed operation.
  • Reverse Wireless Charging: Can wirelessly charge other devices, which is helpful in a pinch for accessories like smartwatches and earbuds.
  • Good Camera Performance: The S21 5G camera has been tested by DxOMark and it has good results.

Google Pixel 9 Pro Advantages:

  • Significantly Superior Performance: The Tensor G4 chipset and higher RAM result in much faster app loading, smoother multitasking, and superior gaming capabilities.
  • Brighter and Sharper Display: Higher resolution, pixel density, and brightness result in a more vibrant and visible display, especially in bright sunlight.
  • Superior Camera System: The Pixel 9 Pro boasts higher-resolution sensors, wider apertures, and advanced AI processing for better image quality, especially in low light, along with enhanced video recording capabilities.
  • Larger Battery: Offers longer battery life, important for users who are often away from power sources.
  • Newer Software: Comes with a more recent Android OS and longer update support.
  • More Storage Options: Offers up to 1TB of storage.
  • Better Connectivity: More advanced WiFi and Bluetooth options.

Trade-offs:

  • The Pixel 9 Pro is heavier and slightly bulkier, which might be less comfortable for some users.
  • The Samsung Galaxy S21 5G is a previous-generation phone, and may not have software and feature updates for long.
  • The Samsung Galaxy S21 5G does not have a dedicated telephoto lens, instead uses a high-resolution sensor for telephoto photos.

3. User Profiles & Recommendations

Samsung Galaxy S21 5G Ideal User:

  • Users who prioritize a lightweight and compact design.
  • Users who want reverse wireless charging capabilities.
  • Users who are on a tighter budget and seek good value on an older model.
  • Users who need a capable camera system and value the DxOMark tested results.

Use Cases for Samsung Galaxy S21 5G:

  • Everyday use for calls, messaging, and social media browsing.
  • Users who do not require demanding gaming or performance.
  • Users who need a reliable camera for casual photography and social media.
  • Lightweight and comfortable enough for extended reading or media consumption on the go.

Google Pixel 9 Pro Ideal User:

  • Users who demand top-tier performance for gaming and multitasking.
  • Users who prioritize superior camera quality, especially in low light.
  • Users who need the best possible display quality.
  • Users who prefer the latest Android software and long-term support.
  • Users who want the most storage possible.

Use Cases for Google Pixel 9 Pro:

  • Professional photographers or enthusiasts seeking high-quality images and video.
  • Gamers who require smooth and responsive performance.
  • Heavy multitasking users who frequently switch between apps.
  • Users who need long battery life and fast charging.
  • Users who value having the latest software features and security updates.

4. Decision Framework

Key Questions for Buyers:

  1. Performance Needs: How important is raw processing power for your daily tasks? Do you prioritize gaming and heavy multitasking?
  2. Camera Quality: How much do you value top-tier photography and video capabilities, particularly in low light?
  3. Size and Weight: Do you prefer a lighter, more compact phone or a larger one with a bigger screen and battery?

Scenario-Based Recommendations:

  • Budget-Conscious User: If you are on a budget but still need a capable phone the Samsung Galaxy S21 5G offers a balance of features at a lower price.

  • Performance Enthusiast: The Google Pixel 9 Pro is the clear winner, offering much faster performance for demanding tasks and gaming.

  • Photography Lover: The Pixel 9 Pro excels in camera performance, making it the better choice for photography enthusiasts.

  • On-the-Go User: The Google Pixel 9 Pro has a larger battery and the brighter screen which will be better for outdoor use and long lasting battery.

  • Software preference: The Google Pixel 9 Pro has a more updated OS and will provide future updates.

Personal Choice

I would choose the Google Pixel 9 Pro.

While I appreciate the lighter form factor and the inclusion of reverse wireless charging in the Samsung Galaxy S21 5G, my priority is performance, camera quality, and having the latest software with continued support. The Google Pixel 9 Pro provides a superior experience in all three aspects: the Tensor G4 chipset delivers substantially better performance, the camera system is more versatile and captures better quality images, and the latest Android version with future updates is a must for me. Additionally, the superior display, larger battery, more storage options, and advanced connectivity options make it a better all-round device despite the added weight. The Google Pixel 9 Pro is just a more advanced device in almost every category. The trade-off in weight is worth the performance increase and overall better user experience.

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.