Samsung Galaxy S21 5G vs Realme 9 Pro+ - Detailed Phone Comparison

Detailed Comparison

Specification
Realme 9 Pro+
Realme 9 Pro+
Realme

General

Launch Date January 29, 2021 February 21, 2022
Release Year 2021 2022

Physical

Volume 85.33 cm³ 93.94 cm³
Screen Size to Weight Ratio 3.67 "/g 3.52 "/g
Weight 169 g 182 g
Height 151.7 mm 160.2 mm
Width 71.2 mm 73.3 mm
Thickness 7.9 mm 8 mm
Foldable Design No No
Available Colors
  • Phantom White
  • Phantom Gray
  • Phantom Violet
  • Phantom Pink
  • Midnight Black
  • Aurora Green
  • Sunrise Blue
  • Free Fire Limited Edition

Display

Screen Size 6.2 " 6.4 "
Resolution 1080 x 2400 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 85.9 % 84.2 %
Pixel Density 421 PPI 411 PPI
Refresh Rate 120 Hz 90 Hz
Typical Brightness N/A 430 nits
HBM Brightness N/A 600 nits
Peak Brightness 1300 nits N/A

Hardware

Battery Capacity per Screen Area 104.06 mAh/in² 109.86 mAh/in²
Battery Density 46.88 mAh/cm³ 47.9 mAh/cm³
Battery Capacity 4000 mAh 4500 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Mediatek Dimensity 920 (6 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (2x2.5 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55)
GPU Mali-G78 MP14 - International Mali-G68 MC4

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 13

Comparison Summary

Smartphone Comparison: Samsung Galaxy S21 5G vs. Realme 9 Pro+

1. Specifications Comparison

FeatureSamsung Galaxy S21 5GRealme 9 Pro+Practical Impact
Design
Dimensions151.7 x 71.2 x 7.9 mm160.2 x 73.3 x 8 mmRealme 9 Pro+ is larger and might feel bulkier; S21 is more compact and easier to handle one-handed.
Weight169g182gS21 is lighter and more comfortable for prolonged use; 13g difference noticeable for some users.
Display
Size6.2"6.4"Realme 9 Pro+ has a slightly larger display, better for media consumption and multi-tasking.
Resolution1080x24001080x2400Both have the same level of sharpness; text and images will be equally clear on both displays.
PPI421411Virtually identical sharpness, differences are unlikely to be noticeable by the human eye.
TechnologyAMOLEDAMOLEDBoth offer vibrant colors, deep blacks, and good contrast.
Refresh Rate120Hz90HzS21 has smoother scrolling and animations, better for gaming and overall fluidity.
Brightness1300 nits0 nits (Data Missing)S21 is significantly brighter and better for outdoor visibility in bright sunlight.
Performance
ChipsetExynos 2100 (5 nm) - InternationalMediatek Dimensity 920 (6 nm)S21's chip is more powerful, offering faster performance for demanding apps and games.
AnTuTu Score749,100496,970S21 is significantly faster, better for gaming and resource-intensive tasks.
GPUMali-G78 MP14 (International)Mali-G68 MC4S21 has a more powerful GPU, offering superior graphics performance, beneficial for gaming and video editing.
Battery
Capacity4000mAh4500mAhRealme 9 Pro+ has a larger battery, likely offering longer battery life.
Charging25W Fast Charging60W Fast ChargingRealme 9 Pro+ charges much faster, reducing downtime.
FeaturesWireless, Reverse, No ChargerNoneS21 offers wireless charging and reverse wireless charging.
Camera
Main Camera12MP, f/1.8, 1/1.76", IMX55550MP, f/1.8, 1/1.56", IMX766Realme 9 Pro+ captures more detailed photos due to higher resolution and larger sensor size.
Telephoto Camera64MP, f/2.0, 1/1.72", S5KGW2NoneS21 has a dedicated telephoto lens for better zoom capabilities.
Wide Angle Camera12.2MP, f/2.2, 1/2.55", IMX5638MP, f/2.2, 1/2.8", IMX355S21 has better image quality for wide-angle shots, but the Realme 9 Pro+ has an additional wide angle lens.
Selfie Camera10MP, f/2.2, 1/3.2", IMX37416MP, f/2.4, 1/3.13", IMX471Realme 9 Pro+ has a higher resolution front camera for more detailed selfies.
Macro CameraNone2MP, f/2.4, 1/5", GC02M1Realme 9 Pro+ has a dedicated macro lens for close-up shots.
VideoUp to 8KUp to 4KS21 records videos in higher resolution and with more features.
DXOMARKMobile: 111, Selfie: 132No DataS21 has scored very well in camera tests on DXOMark.
Software
OSAndroid 11 (Upgradable to 15)Android 12 (Upgradable to 13)Realme 9 Pro+ ships with a newer Android version, though the S21 has a higher version upgrade cap.
Connectivity
Wi-FiWi-Fi 6Wi-Fi 6, MIMOBoth support the latest WiFi standards; Realme 9 Pro+ supports MIMO for potentially improved signal stability and speed
Bluetooth5.05.2Realme 9 Pro+ has a newer Bluetooth version, potentially offering better efficiency and performance.
GPSGPS, Galileo, L1+L5GPS, QZSSS21 supports more GPS bands, potentially offering better location accuracy.
Storage
Internal Storage128 GB or 256 GB128 GB or 256 GBBoth offer the same storage capacity options.
RAM8 GB6 GB or 8 GBBoth offer sufficient RAM for smooth multitasking, although the S21 offers the better base configuration.
Expandable StorageNoNoNeither device has expandable storage.
Audio
QualityDolby Atmos, Stereo SpeakersDolby Atmos, Hi-Res, Stereo Speakers, 2 microphonesRealme 9 Pro+ offers a better audio experience with Hi-Res audio and dual microphones for better clarity.
Security
FeaturesFingerprintFingerprintBoth offer standard fingerprint sensor technology.
Build Quality
Screen ProtectionGorilla Glass VictusGorilla Glass 5S21 has better screen protection.
Sensors
SensorsFingerprint, Proximity, Accelerometer, Compass, Gyroscope, BarometerFingerprint, Heart Rate, Proximity, Accelerometer, GyroscopeS21 has more sensors, specifically a barometer, which provides altitude information, while the Realme 9 Pro+ has a heart rate monitor.

2. Key Differences Analysis

Samsung Galaxy S21 5G Advantages:

  • Superior Performance: Significantly faster processor and GPU, leading to better overall performance, smoother multitasking, and better gaming capabilities.
  • Brighter Display: Significantly brighter screen, much better visibility in outdoor sunlight conditions.
  • Advanced Camera Features: Dedicated telephoto lens for zoom, better video recording capabilities (8K), and overall higher DXOMark scores for better image quality and videography.
  • Wireless Charging: Includes wireless charging, making it more convenient to charge the phone.
  • Better Build Quality: Features Corning Gorilla Glass Victus for better screen protection.
  • Wider range of sensors: Includes a Barometer and compass.
  • Software Support: S21 has a higher max version upgrade cap.

Realme 9 Pro+ Advantages:

  • Larger Battery: Longer battery life, ideal for users who need their phones to last all day.
  • Faster Charging: Significantly faster charging, minimizing downtime.
  • Better Audio: Hi-Res audio and dual microphones for clearer audio capture and playback.
  • Higher Resolution Main Camera: 50MP main sensor for more detailed pictures.
  • Macro and Wide-angle Camera: Additional cameras offer more versatility.
  • Newer Bluetooth version: Better efficiency and performance.

Trade-offs:

  • S21: Loses out on battery and charging speed but gains overall performance and camera superiority.
  • Realme 9 Pro+: Loses out on overall performance and display brightness but gains better battery life, charging speed, and better audio capabilities.

3. User Profiles & Recommendations

Samsung Galaxy S21 5G Ideal User:

  • Power Users: Those who require top-tier performance for gaming, video editing, and resource-intensive applications.
  • Photography Enthusiasts: Users who want the best camera performance and features, especially for zoom and video recording.
  • Outdoor Users: Users who need a bright display for outdoor visibility.
  • Users who appreciate wireless charging: Those who want the convenience of wireless charging and reverse wireless charging.
  • Users that want longer software support: Those that intend to keep their phone for many years and want future upgrades.

Use Cases:

  • Playing graphically intensive games.
  • Shooting high-quality videos in diverse lighting conditions.
  • Multitasking between demanding apps.
  • Using the phone outdoors under bright sunlight.

Realme 9 Pro+ Ideal User:

  • Budget-Conscious Users: Those who want a phone with great battery life and fast charging without breaking the bank.
  • Multimedia Consumers: Users who prioritize good audio and a decent screen for enjoying music and videos.
  • Social Media Enthusiasts: Users who need a decent camera for social sharing and value a high-resolution front camera.
  • Users that want a versatile camera setup: Those that need a macro and wide-angle lens.
  • Users that want best in class charging speeds: Those that need a phone that can be charged quickly.

Use Cases:

  • Watching movies or listening to music for extended periods.
  • Taking selfies and posting on social media.
  • Everyday use where battery life is a major concern.
  • Casual mobile gaming.

4. Decision Framework

Key Questions to Consider:

  1. What is your priority: Performance or Battery Life? If gaming and high-performance tasks are your focus, the S21 is the way to go. If battery life and fast charging are more important, consider the Realme 9 Pro+.
  2. How often do you take photos and videos? If you are a keen photographer the S21 is the better choice. If you just want a decent camera, the Realme is sufficient.
  3. How important is outdoor screen visibility? If you often use your phone in bright sunlight, the significantly brighter display of the S21 will be worth considering.

Scenario-Based Recommendations:

  • For the Gamer: Choose the Samsung Galaxy S21 5G for its superior performance and smoother display.
  • For the Social Media Creator: Consider the Realme 9 Pro+ with its higher resolution front camera and faster charging.
  • For the Everyday User who wants a Reliable Phone: Choose the Realme 9 Pro+ for its longer battery life and fast charging.
  • For the Power User: Choose the Samsung Galaxy S21 5G for its superior processor and advanced camera features.

My Choice

If I were choosing between these two phones, I would pick the Samsung Galaxy S21 5G.

Here's why:

  1. Performance is a priority for me: I frequently use my phone for demanding applications, including photo and video editing. The significantly more powerful processor and GPU of the S21 will provide a smoother and more responsive experience, making it worth the compromise in battery life.

  2. Superior Camera: I like to experiment with my phone camera and take lots of pictures and videos. The quality of photos and videos as well as the additional features such as the telephoto lens, 8K video recording, and the high DXOMARK scores on the S21 would be more valuable to me. The extra macro and ultrawide lens on the Realme is nice to have but not crucial for my main uses.

  3. Brightness: I often use my phone outdoors, and therefore a brighter screen that is readable in sunlight is essential. The significantly brighter display of the S21 is a clear win for me.

  4. Software Updates: The fact that the S21 is planned to receive a higher number of OS upgrades in the future is also a positive for me.

While the Realme 9 Pro+ has advantages such as faster charging and longer battery life, my main focus is performance, and the camera, and therefore the S21 fits my needs and priorities better.

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.