Samsung Galaxy S21 5G vs OnePlus Nord N20 SE - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 August 8, 2022
Release Year 2021 2022

Physical

Volume 85.33 cm³ 98.28 cm³
Screen Size to Weight Ratio 3.67 "/g 3.51 "/g
Weight 169 g 187 g
Height 151.7 mm 163.8 mm
Width 71.2 mm 75 mm
Thickness 7.9 mm 8 mm
Foldable Design No No
Available Colors
  • Phantom White
  • Phantom Gray
  • Phantom Violet
  • Phantom Pink
  • Blue Oasis
  • Celestial Black

Display

Screen Size 6.2 " 6.56 "
Resolution 1080 x 2400 720 x 1612
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 85.9 % 84.2 %
Pixel Density 421 PPI 269 PPI
Refresh Rate 120 Hz N/A
Typical Brightness N/A 480 nits
HBM Brightness N/A 600 nits
Peak Brightness 1300 nits N/A

Hardware

Battery Capacity per Screen Area 104.06 mAh/in² 116.19 mAh/in²
Battery Density 46.88 mAh/cm³ 50.88 mAh/cm³
Battery Capacity 4000 mAh 5000 mAh
NFC Support Yes No
Chipset Exynos 2100 (5 nm) - International Mediatek MT6765G Helio G35 (12 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)
GPU Mali-G78 MP14 - International PowerVR GE8320

Connectivity

USB Version 3.2 2.0
OTG Support 1 1
DisplayPort
DisplayPort Version N/A N/A
USB Features USB Type-C 3.2, OTG USB Type-C 2.0, OTG

Software

Operating System Android Android
Initial OS Version 11 12
Maximum OS Version 15

Comparison Summary

1. Specifications Comparison

FeatureSamsung Galaxy S21 5GOnePlus Nord N20 SEPractical Impact
Design
Dimensions151.7 × 71.2 × 7.9 mm163.8 × 75 × 8 mmS21 is more compact and pocketable; N20 SE is larger and may be less comfortable for smaller hands.
Weight169g187gS21 is lighter, making it more comfortable for extended use.
Display
Size6.2"6.56"N20 SE offers more screen real estate for media consumption and multitasking; S21 is more compact.
Resolution1080x2400720x1612S21 has a much sharper display; Text and images will appear significantly clearer.
Pixel Density (PPI)421269S21 has a significantly sharper display; text and images will have more detail.
TechnologyAMOLEDIPS LCDS21 offers deeper blacks, better contrast, more vibrant colors, and better power efficiency with dark themes.
Refresh Rate120Hz60HzS21 has smoother scrolling, animations, and gaming visuals.
Brightness1300 nits0 nitsS21 is much better for use in bright sunlight (N20 SE brightness spec is unavailable).
Performance
ChipsetExynos 2100 (5 nm)Helio G35 (12 nm)S21 provides significantly faster app loading, smoother multitasking, and better gaming performance.
AnTuTu Score749,100221,000S21 offers dramatically better overall performance and is more future-proof.
GPUMali-G78 MP14PowerVR GE8320S21 has a more powerful GPU for demanding graphics tasks and gaming.
Battery
Capacity4000mAh5000mAhN20 SE likely offers longer battery life.
Charging25W Fast Charging33W Fast ChargingN20 SE charges faster.
FeaturesWireless Charging, Reverse ChargingNoneS21 offers more versatile charging options.
Camera
Main Camera Resolution12MP50MPN20 SE captures more detailed images in ideal conditions due to the higher resolution, though sensor size matters for overall quality.
Main Camera Sensor Size1/1.76"1/2.76"S21's larger sensor captures more light, leading to better low-light performance and dynamic range.
Telephoto/Portrait CameraYesNoS21 offers optical zoom and dedicated portrait mode.
Wide-Angle CameraYesNoS21 offers a wider field of view and macro capabilities.
Selfie Camera10MP8MPS21's higher resolution front camera may capture more detail, but the impact depends on the users' use cases.
Portrait (Depth)No2MPN20 SE has a dedicated depth sensor, improving portrait background blur effects.
Video RecordingUp to 8KUp to 1080pS21 can record much higher-resolution video; useful for professional use cases
DxOMarkMobile: 111, Selfie: 132No scoreS21 has superior camera quality, based on DxOMark benchmark scores
Software
OSAndroid 11 (Upgradable to 15)Android 12N20 SE ships with a newer OS but S21 is planned to upgrade further.
Connectivity
Wi-FiWi-Fi 6Wi-Fi 5S21 provides better Wi-Fi performance and is future-proof
Bluetooth5.05.3N20 SE has a newer Bluetooth version for better device connections.
Storage
Internal128/256 GB64/128 GBS21 offers larger internal storage options, useful for large media collections and more applications.
RAM8GB4GBS21 has double the RAM, leading to smoother multitasking and app performance.
ExpandableNoNoNeither phone offers expandable storage.
Audio
Audio FeaturesDolby AtmosNo Dolby AtmosS21 offers a slightly better overall audio experience.
Security
Fingerprint SensorUnder-displaySide-mountedN20 SE has a more convenient fingerprint sensor for some users.
Build Quality
Screen ProtectionGorilla Glass VictusUnknownS21 has superior screen protection against scratches and impacts.
Sensors
SensorsComprehensive sensor suiteLess comprehensive sensor suiteS21 includes additional sensors for advanced functionalities.

2. Key Differences Analysis

Samsung Galaxy S21 5G Advantages:

  • Significantly Superior Display: AMOLED screen with higher resolution, pixel density, refresh rate, and brightness offers a much better viewing experience, especially in bright conditions.
  • Far Superior Performance: The Exynos 2100 chipset provides dramatically better overall performance, making it smoother for multitasking, gaming, and demanding apps.
  • Advanced Camera System: Offers a more versatile camera system with a telephoto lens, ultrawide lens, higher-quality video recording (up to 8K), OIS, and generally better image quality.
  • Additional Features: Wireless charging, reverse wireless charging and a more feature rich camera and audio experience.
  • Better Build Quality: Uses Gorilla Glass Victus for superior screen protection.
  • More RAM & Storage: Offers significantly more RAM for multitasking and larger storage options.

OnePlus Nord N20 SE Advantages:

  • Larger Battery: Potentially offers longer battery life, though real-world endurance depends on usage.
  • Faster Charging: Charges faster with 33W.
  • Newer Bluetooth Standard: Features the latest Bluetooth version (5.3).
  • Side Mounted Fingerprint Sensor: Some users may find the side mounted sensor more intuitive.
  • Lower Price: The Nord N20 SE is likely more affordable than the S21.

Significant Trade-offs:

  • The OnePlus Nord N20 SE sacrifices display quality, performance, and camera capabilities for a larger battery and faster charging speed.
  • The Samsung Galaxy S21 5G, while offering superior performance, has a smaller battery and does not include a charger in the box.

3. User Profiles & Recommendations

Samsung Galaxy S21 5G Ideal Users:

  • Power Users: Individuals who require high performance for gaming, heavy multitasking, or demanding apps.
  • Media Consumers: Users who prioritize a high-quality display for watching videos, browsing, and enjoying other visual content.
  • Photography Enthusiasts: Users who want a versatile camera system with good image quality, zoom capabilities, and high-resolution video recording.
  • Users Needing Extra Features: Those who value extra features like Wireless charging, reverse charging, Dolby Atmos, and a more comprehensive set of sensors.

Use Cases:

  • Mobile gaming at high settings.
  • Editing photos and videos on the go.
  • Watching HDR content on a vibrant and high-resolution display.
  • Using advanced features that are supported by more comprehensive sensors.

OnePlus Nord N20 SE Ideal Users:

  • Budget-Conscious Buyers: Individuals who prioritize affordability.
  • Casual Users: Users with basic smartphone needs like social media, browsing, and messaging.
  • Users Prioritizing Battery Life: Those who value extended battery life.

Use Cases:

  • Everyday tasks like browsing, social media, and texting.
  • Basic mobile gaming.
  • Users who don't require professional grade photography and video.
  • Users who require a long battery life between charges.

Price-to-Value Ratio:

  • The Samsung Galaxy S21 5G commands a higher price but offers a dramatically better experience in terms of display, performance, and camera quality.
  • The OnePlus Nord N20 SE offers a more affordable option but with significant compromises in key areas.

4. Decision Framework

Key Questions for Buyers:

  1. What is my budget? The S21 will likely cost significantly more.
  2. How important is display quality and performance? If you value a sharp, smooth, and responsive experience, the S21 is a clear winner.
  3. Do I need a high-quality camera or prefer to trade off camera capabilities for battery life? The S21 excels in camera versatility and quality while the N20 SE prioritizes battery.

Scenario-Based Recommendations:

  • Scenario 1: High-End Gaming and Media Consumption: Choose the Samsung Galaxy S21 5G. Its superior display, performance, and audio provide an excellent gaming and media experience.
  • Scenario 2: Budget-Conscious Buyer with Basic Needs: Choose the OnePlus Nord N20 SE. It handles basic tasks adequately and provides better battery life at a lower price.
  • Scenario 3: Photography Enthusiast: Choose the Samsung Galaxy S21 5G. Its versatile camera system with telephoto, ultrawide, and 8K video recording is a superior choice.
  • Scenario 4: Long Battery Life is Crucial: Choose the OnePlus Nord N20 SE.

My Choice:

I would choose the Samsung Galaxy S21 5G. While the OnePlus Nord N20 SE has a larger battery and faster charging, the S21 offers a vastly superior user experience in almost every other key area, which is much more important to me. The display quality alone is a game-changer, making media consumption, browsing and even just navigating menus much more enjoyable. The significantly faster performance means the phone will feel responsive and smooth for longer. The better camera system is also a big plus for anyone who wants to take good photos. Although it costs more, the overall experience of the S21 justifies its price. It offers far more value than the Nord N20 SE.

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.