Samsung Galaxy S21 5G vs Realme 11 - Detailed Phone Comparison

Detailed Comparison

Specification
Realme 11
Realme 11
Realme

General

Launch Date January 29, 2021 July 31, 2023
Release Year 2021 2023

Physical

Volume 85.33 cm³ 102 cm³
Screen Size to Weight Ratio 3.67 "/g 3.54 "/g
Weight 169 g 190 g
Height 151.7 mm 165.7 mm
Width 71.2 mm 76 mm
Thickness 7.9 mm 8.1 mm
Foldable Design No No
Available Colors
  • Phantom White
  • Phantom Gray
  • Phantom Violet
  • Phantom Pink
  • Midnight Black (Glory Black)
  • Sunrise Gold (Glory Gold)

Display

Screen Size 6.2 " 6.72 "
Resolution 1080 x 2400 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 85.9 % 86.6 %
Pixel Density 421 PPI 392 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness N/A 550 nits
HBM Brightness N/A 680 nits
Peak Brightness 1300 nits N/A

Hardware

Battery Capacity per Screen Area 104.06 mAh/in² 110.72 mAh/in²
Battery Density 46.88 mAh/cm³ 49.02 mAh/cm³
Battery Capacity 4000 mAh 5000 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Mediatek Dimensity 6100+ (6 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (2x2.2 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU Mali-G78 MP14 - International Mali-G57 MC2

Connectivity

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

Software

Operating System Android Android
Initial OS Version 11 13
Maximum OS Version 15

Comparison Summary

Smartphone Comparison: Samsung Galaxy S21 5G vs. Realme 11

1. Specifications Comparison

FeatureSamsung Galaxy S21 5GRealme 11Practical Impact
Design
Launch Date2021-01-292023-07-31Realme 11 is significantly newer, meaning potentially longer software support
Dimensions151.7 × 71.2 × 7.9 mm165.7 × 76 × 8.1 mmS21 is noticeably smaller and more compact, better for one-handed use. Realme 11 is larger and may be less pocketable.
Weight169g190gS21 is lighter, making it more comfortable for extended periods. Realme 11 may feel heavier in hand.
Display
Size6.2"6.72"Realme 11 has a larger screen, better for media consumption and multitasking. S21 is more compact.
Resolution1080x24001080x2400Both have the same resolution, meaning similar sharpness
PPI421392S21 has slightly higher pixel density, resulting in a sharper image.
TechnologyAMOLEDIPS LCDS21's AMOLED offers richer colors, deeper blacks and better contrast; Realme 11's LCD may have washed-out colours in comparison.
Refresh Rate120Hz120HzBoth have smooth scrolling, animations and gaming.
Brightness1300 nits1000 nitsS21 is significantly brighter, with better screen visibility under direct sunlight.
Performance
ChipsetExynos 2100 (5 nm)Mediatek Dimensity 6100+ (6 nm)S21's chipset is much more powerful for demanding tasks and gaming. Realme 11 is adequate for daily tasks.
AnTuTu Score749,100389,600S21 performs significantly faster in benchmarks, translates to better app loading, gaming and multitasking.
GPUMali-G78 MP14Mali-G57 MC2S21 offers superior graphics performance, especially for gaming.
Battery
Capacity4000mAh5000mAhRealme 11's larger battery provides potentially longer battery life, depending on usage patterns.
Charging25W fast charging33W fast chargingRealme 11 charges slightly faster.
FeaturesReverse, Wireless chargingNoneS21 supports wireless and reverse wireless charging, offering more flexibility.
Camera
Standard Camera Resolution12MP64MPRealme 11 captures higher-resolution images in ideal lighting conditions.
Standard Camera Sensor Size1/1.76"1/2"S21's larger sensor captures more light, better in low light situations.
Telephoto/PortraitYesNoS21 offers telephoto zoom, Realme 11 has no telephoto or portrait lens
Wide Angle + MacroYesNoS21 captures wide-angle and macro photos, Realme 11 does not have this function.
Selfie Camera Resolution10MP8MPS21 takes slightly higher resolution selfies
Selfie Camera Aperturef/2.2f/2.0Realme 11's wider aperture takes better selfies in low light situations.
Portrait (depth) cameraNoYesRealme 11 captures depth information for portrait mode, while S21 does not have a separate depth sensor.
Video RecordingUp to 8K@24fpsUp to 1080p@30fpsS21 captures significantly higher quality videos, including 4k and 8k recordings, while Realme 11 is limited to 1080p.
OIS (Optical Image Stabilization)YesNoS21 offers optical stabilization for clearer images and stable videos, especially in shaky conditions.
DxOMark (Mobile)111Not TestedS21's camera has been officially rated, with a decent performance for photos and videos. Realme 11 does not have this rating.
DxOMark (Selfie)132Not TestedS21's selfie camera has a better DxOMark rating. Realme 11 does not have this rating.
Software
Operating SystemAndroid 11 (upgradable to 15)Android 13Realme 11 comes with a more up-to-date software. S21, can be upgraded to a newer version.
Connectivity
Wi-FiWi-Fi 6 (802.11ax)Wi-Fi 5 (802.11ac)S21 supports faster Wi-Fi, ideal for high-speed downloads.
Bluetooth5.05.1Realme 11 has a slightly more recent bluetooth version.
GPSGPS (L1+L5), Galileo (E1+E5a)GPS, GLONASS, Beidou, QZSS, GalileoBoth offer similar location features, with extra accuracy in the Samsung
Storage
Internal Storage128/256 GB128/256 GBBoth offer the same maximum storage configuration.
RAM8 GB8/12 GBRealme 11 offers a 12GB RAM variant, ideal for multitasking.
Expandable StorageNoNoNeither device offers expandable storage
Audio
Audio QualityDolby Atmos, Stereo SpeakersBasicS21 offers superior audio, including spatial sound and clearer calls.
Security
Fingerprint Sensorbasic fingerprint sensorSide-mounted fingerprint sensorRealme 11 has a more convenient side-mounted fingerprint reader.
Build Quality
Screen ProtectionCorning Gorilla Glass VictusCorning Gorilla Glass 5S21 has more durable screen protection, less prone to scratches.
Sensors
SensorsBarometer, CompassHeart RateS21 features barometer and compass, useful for specific applications, while Realme 11 has heart rate sensor.

2. Key Differences Analysis

Samsung Galaxy S21 5G Advantages:

  • Superior Display: AMOLED screen with higher brightness, offering better contrast, colour accuracy and outdoor visibility.
  • Higher Performance: Significantly more powerful chipset and GPU, leading to faster app loading, better multitasking, and smoother gaming experience.
  • Advanced Camera System: Includes telephoto lens, wider angle lens, OIS, and higher quality video recording (up to 8K) making it more versatile for photos and videos.
  • Better Audio: Includes Dolby Atmos, stereo speakers, and a noise cancellation microphone, offering enhanced audio experience.
  • Wireless Charging: Supports both wireless charging and reverse wireless charging, offering convenient charging options.
  • Better build quality: With more durable Gorilla Glass Victus.
  • More comprehensive sensors: Includes Barometer and Compass for more advanced applications.

Realme 11 Advantages:

  • Newer Device: Launched later, potentially longer software support.
  • Larger Battery: 5000mAh battery potentially offers longer battery life.
  • Faster Charging: 33W fast charging, slightly quicker than the S21's 25W.
  • Larger Display: 6.72" screen, which can be preferable for media consumption.
  • More RAM option: Offers 12GB RAM configuration for heavy multitasking.
  • Up-to-date Android version: Comes with Android 13 out of the box.
  • Side-mounted fingerprint sensor: Provides a more convenient unlock.
  • Heart rate sensor: Includes a heart rate sensor, beneficial for health tracking.

Trade-offs:

  • Samsung Galaxy S21 5G: Smaller display, lower battery capacity, and higher price point.
  • Realme 11: Inferior display quality, lower performance, basic audio, and limited camera capabilities.

3. User Profiles & Recommendations

Samsung Galaxy S21 5G Ideal Users:

  • Power Users: Users who prioritize high performance, gaming, and smooth multitasking.
  • Photography Enthusiasts: Users who want a versatile camera system with excellent image and video quality.
  • Media Consumers: Users who value display quality and audio experience.
  • Professionals: Who would appreciate the wireless charging options and advanced features

Realme 11 Ideal Users:

  • Budget-Conscious Buyers: Users looking for a good-value phone with essential features.
  • Casual Users: Users who primarily use their phone for social media, browsing, and basic apps.
  • Battery Life Seekers: Users who prioritize longer battery life over other advanced features.
  • Those who want a new device with an updated Android version.

Specific Use Cases:

  • Samsung Galaxy S21 5G: Gaming, professional photography/videography, media consumption, productivity tasks, content creation.
  • Realme 11: Social media browsing, casual gaming, daily tasks, media viewing, general communications.

4. Decision Framework

Key Questions for Buyers:

  1. Performance Needs: Do you need a phone for demanding tasks like gaming and video editing, or is casual use sufficient?
  2. Display Priorities: Do you value a superior AMOLED display with high brightness, or is a larger IPS LCD screen adequate?
  3. Camera Requirements: Do you require a versatile camera system with multiple lenses and advanced features, or is a basic camera sufficient?

Scenario-Based Recommendations:

  • Scenario 1: Heavy User with a focus on Performance, camera and display: Choose the Samsung Galaxy S21 5G. It offers superior performance, a better display and more advanced camera features.
  • Scenario 2: Budget-Conscious user who wants better battery life and a bigger screen: Choose the Realme 11. It provides good value with a larger battery, decent display, and fast charging.
  • Scenario 3: Casual user looking for a balanced experience: The choice depends. If you value a better camera, audio and display, choose the Samsung Galaxy S21 5G. If your priority is a larger screen and a newer device, choose the Realme 11.

Final Decision

If I had to choose, I would pick the Samsung Galaxy S21 5G. While it's an older device, its performance advantages, far superior display quality, and advanced camera capabilities outweigh the benefits of the newer, budget-focused Realme 11. The ability to shoot 4K/8K video and its bright AMOLED screen make it much more appealing for a wide range of use cases, from media consumption to photography. The S21's better audio and build quality are also important factors. Although the Realme 11 has a larger battery, the S21's performance efficiency is good enough for a full day of usage. The superior processor and GPU on the S21 are critical for my use cases, which involve some gaming, multitasking and occasional photo/video editing. The overall user experience of the S21 is simply a class above.

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
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  • User-centric technology insights

Bridging technical complexity with engaging, accessible narratives.