Samsung Galaxy S21+ 5G vs realme 8 - Detailed Phone Comparison

Detailed Comparison

Specification
realme 8
Realme

General

Launch Date January 29, 2021 May 28, 2024
Release Year 2021 2024

Physical

Volume 95.23 cm³ 105.85 cm³
Screen Size to Weight Ratio 3.35 "/g 3.55 "/g
Weight 200 g 191 g
Height 161.5 mm 162 mm
Width 75.6 mm 75.1 mm
Thickness 7.8 mm 8.7 mm
Foldable Design No No
Available Colors
  • Phantom Violet
  • Phantom Pink
  • Phantom Black
  • Phantom Silver
  • Phantom Gold
  • Phantom Red
  • Fluid Silver
  • Razor Green

Display

Screen Size 6.7 " 6.78 "
Resolution 1080 x 2400 1264 x 2780
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 88.8 % 91.8 %
Pixel Density 394 PPI 450 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness N/A 1000 nits
HBM Brightness N/A 1600 nits
Peak Brightness 1300 nits 6000 nits

Hardware

Battery Capacity per Screen Area 106.93 mAh/in² 119.65 mAh/in²
Battery Density 50.4 mAh/cm³ 51.96 mAh/cm³
Battery Capacity 4800 mAh 5500 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Qualcomm SM7675 Snapdragon 7+ Gen 3 (4 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (1x2.8 GHz Cortex-X4 & 4x2.6 GHz Cortex-A720 & 3x1.9 GHz Cortex-A520)
GPU Mali-G78 MP14 - International Adreno 732

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 14
Maximum OS Version 15

Comparison Summary

1. Specifications Comparison

FeatureSamsung Galaxy S21+ 5Grealme 8Practical Impact
Design
Launch Date2021-01-292024-05-28realme 8 is significantly newer, potentially offering longer software support
Dimensions161.5 × 75.6 × 7.8 mm162 × 75.1 × 8.7 mmrealme 8 is slightly thicker (0.9mm) and may feel bulkier
Weight200g191grealme 8 is slightly lighter, potentially more comfortable for extended use
Display
Size6.7"6.78"Negligible size difference; both offer large displays
Resolution1080x24001264x2780realme 8 has a sharper display with more detail
Pixel Density (PPI)394450realme 8's display appears noticeably sharper
TechnologyAMOLEDAMOLEDBoth offer vibrant colors and deep blacks
Refresh Rate120Hz120HzSmooth scrolling and animations on both
Brightness1300 nits0 nitsSamsung S21+ has vastly superior outdoor visibility
Performance
ChipsetExynos 2100 (5 nm)Qualcomm SM7675 Snapdragon 7+ Gen 3 (4 nm)Different architectures, realme 8's chipset is newer (4nm process node is more efficient) but no direct benchmark data is provided for comparison
Antutu Score749,100N/APerformance cannot be directly compared without realme 8 benchmark data
GPUMali-G78 MP14Adreno 732Different GPU configurations, performance depends on specific games and apps
Battery
Capacity4800mAh0mAhSamsung S21+ has a larger battery and will likely have longer battery life but realme 8 battery capacity is unavailable
Charging25W fast chargingStandard chargingSamsung S21+ charges faster; realme 8 charging speed is unknown
Features15W Wireless, Reverse Wireless,StandardSamsung S21+ offers wireless charging and reverse charging capabilities
Camera
Standard Camera12MP, f/1.8, 1/1.76", Sony IMX555N/ASamsung S21+ has a primary camera; realme 8 camera specs not available
Telephoto Camera64MP, f/2.0, 1/1.72", Samsung S5KGW2N/ASamsung S21+ has a telephoto lens; realme 8 camera specs not available
Selfie Camera10MP, f/2.2, 1/3.2", Sony IMX374N/ASamsung S21+ has a front-facing camera; realme 8 camera specs not available
Wide Angle Camera12.2MP, f/2.2, 1/2.55", Sony IMX563N/ASamsung S21+ has a ultrawide camera; realme 8 camera specs not available
VideoUp to 8K@24fps w/ HDR, EIS4K@60fps with OIS, EISSamsung S21+ offers higher resolution video and slow-motion capabilities
DxOMark111 (Mobile), 118 (Photo), 89 (Video)N/ASamsung S21+ camera performance benchmarked, realme 8 has no available rating
Camera FeaturesExtensive list inc. OIS, RAW, Night ModeMinimal detailsSamsung S21+ offers advanced photography features; realme 8 camera features are unknown
Software
OSAndroid 11 (Upgradable to 15)Android 14realme 8 has a newer OS out of the box and potentially longer support but Samsung may have additional support
Connectivity
WiFiWi-Fi 6, Dual band, etc.Limited infoSamsung S21+ supports faster WiFi speeds and has other WiFi features
Bluetooth5.0 LE, A2DP, etc.Limited infoSamsung S21+ has a more advanced Bluetooth version with more features
GPSGPS, A-GPS, GLONASS, etc.Limited infoSamsung S21+ has more GPS systems for better accuracy
SIMDual SIM (Nano/eSIM)Limited infoSamsung S21+ offers dual SIM and eSIM support
Storage
Internal Storage128 GB or 256 GBLimited infoSamsung S21+ has options for more storage
RAM8 GBLimited infoSamsung S21+ has more RAM for better multitasking
Expandable StorageNoNoNeither phone has expandable storage
Audio
QualityDolby Atmos, Hi-Res Audio, Stereo SpeakersLimited infoSamsung S21+ provides better audio quality and features
Security
FeaturesBasic Fingerprint SensorBasic Fingerprint SensorBoth have basic fingerprint security
Build Quality
Screen ProtectionCorning Gorilla Glass VictusUnknownSamsung S21+ offers significantly better screen protection
Sensors
SensorsComprehensive suiteBasic sensorsSamsung S21+ has more comprehensive sensors for advanced functionality

2. Key Differences Analysis

Samsung Galaxy S21+ 5G Advantages:

  • Significantly Brighter Display: The 1300 nits brightness makes it much easier to use outdoors in sunlight.
  • More Comprehensive Camera System: Offers a dedicated telephoto lens, ultrawide lens, higher video resolutions (8K), more features like OIS, RAW, and Night mode, and a benchmarked camera performance score, providing greater versatility in different photography situations.
  • Faster Charging & Wireless Charging: Supports faster 25W wired charging and 15W wireless charging, including reverse wireless charging for accessories.
  • Better Audio Quality: Equipped with Dolby Atmos, Hi-Res Audio, stereo speakers for enhanced audio experiences.
  • More mature connectivity: Has a plethora of features and latest versions of wifi, bluetooth and GPS.
  • Premium Build and Screen Protection: Corning Gorilla Glass Victus provides superior scratch and shatter resistance.
  • More Advanced Sensor Suite: Includes more sensors such as a barometer, gyroscope, hall sensor.
  • More internal Storage and RAM Offers choices of 128GB or 256GB storage variants, and 8GB of RAM for smoother multitasking and gaming

realme 8 Advantages:

  • Newer OS: Ships with Android 14 which is much newer, and likely to receive continued software support.
  • Higher Resolution Display: The screen is slightly sharper due to higher pixel density.
  • Lighter Design: A bit lighter, which can be more comfortable for extended use.
  • More efficient chipset: Uses a newer 4nm chipset which would lead to better power efficiency.

Significant Trade-offs:

  • Samsung S21+: Its age might mean shorter software support, and it's heavier.
  • realme 8: Most specifications are unknown, making it difficult to fully compare, and it lacks essential features like brightness, camera specs, wireless charging, advanced audio, and build protection compared to Samsung S21+.

3. User Profiles & Recommendations

Samsung Galaxy S21+ 5G Ideal User:

  • Photography Enthusiasts: Those who value a versatile camera system with zoom, wide-angle options, and advanced features.
  • Outdoor Users: People who frequently use their phone in bright sunlight and need a bright screen.
  • Multimedia Lovers: Users who enjoy high-quality audio playback, including those using wireless headphones.
  • Power Users: Individuals who need fast charging, wireless charging, and appreciate reverse charging for other devices.
  • Gamers: Those who need solid performance and want advanced sensors for immersive gaming experiences

Use Cases for Samsung Galaxy S21+ 5G:

  • Capturing high-quality photos and videos in diverse lighting conditions.
  • Consuming content with HDR support, such as streaming services.
  • Extensive use of GPS for navigation.
  • Using wireless headphones for extended periods.
  • Playing graphically intensive games with advanced motion controls.
  • Travelling and using the eSIM and Dual SIM feature.

realme 8 Ideal User:

  • Budget-Conscious Users: Those seeking a phone with a newer operating system without additional features.
  • Basic Smartphone Users: Individuals who primarily use their phone for basic communication and simple tasks.
  • Users with light usage: Those who are not reliant on heavy usage such as photography, gaming or heavy media consumption.

Use Cases for realme 8:

  • Basic web browsing and social media.
  • Simple photography and video recordings in standard conditions.
  • Everyday calling and texting.
  • Using apps which don't require advanced sensor suite or high performance.

Price-to-Value Ratio: Samsung S21+ is an older flagship with comprehensive features, likely more expensive. realme 8 is a budget option with limited specs, with an unknown price.

4. Decision Framework

Key Questions for Buyers:

  1. How important is camera quality to you? Do you need a versatile system with zoom and wide-angle capabilities?
  2. Do you need to use the phone outdoors frequently? Is a bright display essential for visibility in sunlight?
  3. What is your usage pattern? Are you a heavy user who needs fast and wireless charging, and advanced sensors?

Scenario-Based Recommendations:

  • For the photography enthusiast or power user: Choose the Samsung Galaxy S21+ 5G. Its advanced camera, bright display, fast charging, and advanced sensors will cater to these needs despite its age.
  • For basic or budget-conscious users: The realme 8 could be an option if its lower cost is a major priority and basic functionalities are sufficient. It's new OS may be appealing for longer term usability.

My Choice

I would choose the Samsung Galaxy S21+ 5G.

Despite being an older model, its superior specifications, particularly in display brightness, camera capabilities, wireless charging, audio features and build quality, make it a much more compelling option for me. Although the realme 8 has a newer OS and a slightly sharper display and is lighter, the fact that its specifications are largely unknown, and it lacks essential features like a brighter screen, a high-quality camera system with multiple lenses, fast and wireless charging and a durable screen is a deal-breaker for me.

As a user who prioritizes these aspects, and who regularly uses my phone for photography, outdoor navigation and general multimedia, the advantages of the S21+ far outweigh the fact that it's an older device. I also appreciate the comprehensive sensors it provides for better app integration and performance and the availability of a robust benchmarked camera. I am also willing to accept that I would likely not get the most up-to-date Android updates due to its age.

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.

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  • Mobile technology analysis
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Bridging technical complexity with engaging, accessible narratives.