Samsung Galaxy S21 5G vs Oppo Reno8 Pro - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 July 19, 2022
Release Year 2021 2022

Physical

Volume 85.33 cm³ 87.32 cm³
Screen Size to Weight Ratio 3.67 "/g 3.66 "/g
Weight 169 g 183 g
Height 151.7 mm 161.2 mm
Width 71.2 mm 74.2 mm
Thickness 7.9 mm 7.3 mm
Foldable Design No No
Available Colors
  • Phantom White
  • Phantom Gray
  • Phantom Violet
  • Phantom Pink
  • Glazed Green
  • Glazed Black
  • House of the Dragon

Display

Screen Size 6.2 " 6.7 "
Resolution 1080 x 2400 1080 x 2412
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 85.9 % 90.3 %
Pixel Density 421 PPI 394 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness N/A 500 nits
HBM Brightness N/A 800 nits
Peak Brightness 1300 nits 950 nits

Hardware

Battery Capacity per Screen Area 104.06 mAh/in² 100.25 mAh/in²
Battery Density 46.88 mAh/cm³ 51.54 mAh/cm³
Battery Capacity 4000 mAh 4500 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Mediatek Dimensity 8100 Max (5 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (4x2.85 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
GPU Mali-G78 MP14 - International Mali-G610 MC6

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 14

Comparison Summary

Smartphone Comparison: Samsung Galaxy S21 5G vs. Oppo Reno8 Pro

1. Specifications Comparison

Here's a detailed comparison of the key specifications for the Samsung Galaxy S21 5G and the Oppo Reno8 Pro, along with an analysis of their practical implications:

Design

FeatureSamsung Galaxy S21 5GOppo Reno8 ProPractical Impact
Dimensions151.7 × 71.2 × 7.9 mm161.2 × 74.2 × 7.3 mmThe Reno8 Pro is noticeably taller and wider but thinner, which may affect single-handed use and pocket comfort.
Weight169g183gS21 5G is lighter, making it more comfortable for prolonged use. Reno8 Pro has a bit more heft, potentially feeling more premium.

Display

FeatureSamsung Galaxy S21 5GOppo Reno8 ProPractical Impact
Size6.2"6.7"The Reno8 Pro offers a larger screen for a more immersive experience, better for media consumption and gaming. The S21 is more pocketable.
Resolution1080x24001080x2412Both have very similar FHD+ resolutions; differences are negligibly small.
PPI421394The S21 5G has a slightly sharper display, with a higher pixel density, although the difference is unlikely to be noticeable to the naked eye for most users.
TechnologyAMOLEDAMOLEDBoth offer vibrant colors, deep blacks, and excellent contrast ratio.
Refresh Rate120Hz120HzBoth offer smooth scrolling and animations.
Brightness1300 nits900 nitsThe S21 5G is significantly brighter, offering better visibility in direct sunlight.

Performance

FeatureSamsung Galaxy S21 5GOppo Reno8 ProPractical Impact
ChipsetExynos 2100 (5 nm) - InternationalMediatek Dimensity 8100 Max (5 nm)Both are on a 5 nm process; Dimensity 8100 Max in Reno8 Pro generally performs better in benchmarks and in some real-world tasks.
AnTuTu Score749,100837,000Reno8 Pro generally has a slightly better performance for gaming and resource intensive apps.
GPUMali-G78 MP14 - InternationalMali-G610 MC6The GPU differences suggest that the Reno8 Pro may have a slight edge in graphics-heavy tasks such as gaming.

Battery

FeatureSamsung Galaxy S21 5GOppo Reno8 ProPractical Impact
Capacity4000mAh4500mAhThe Reno8 Pro will likely offer longer battery life, lasting more hours on a single charge.
Charging25W fast charging80W fast chargingReno8 Pro charges much faster, enabling quicker top-ups.
FeaturesReverse Charging, Wireless 15WNoneS21 5G offers versatile charging options; wireless charging and reverse charging increase flexibility. Reno8 Pro focuses on rapid wired charging.

Camera

FeatureSamsung Galaxy S21 5GOppo Reno8 ProPractical Impact
Main Camera12MP, f/1.8, 1/1.76", 1.8µm pixel size (Sony IMX555)50MP, f/1.8, 1/1.56", 1.0µm pixel size (Sony IMX766)The Reno8 Pro's main camera has higher resolution and a slightly larger sensor, suggesting better detail and low light performance, however the pixel size is smaller
Telephoto + portrait64MP, f/2.0, 1/1.72", 0.8µm pixel size (Samsung Bright S5KGW2)Not AvailableThe S21 5G has dedicated telephoto for better zoom and portrait shots.
Selfie Camera10MP, f/2.2, 1/3.2", 1.22µm pixel size (Sony IMX374)32MP, f/2.4, 1/2.74", 0.8µm pixel size (Sony IMX709)The Reno8 Pro's front camera has a much higher resolution and slightly larger sensor for better selfies, albeit with a smaller pixel size.
Wide Angle Lens12.2MP, f/2.2, 1/2.55", 1.4µm pixel size (Sony IMX563)5MP, f/2.2The S21 has a better wide angle lens on paper. The Reno8 Pro's wide angle lens is not that impressive on its own.
Macro LensNot available2MP, f/2.4, 1/5", 1.75µm pixel size (Omnivision OV02B10)The Reno8 Pro offers macro capabilities for close-up shots.
VideoUp to 8K@24fps, 4K@60fps, with HDR, EIS, Stereo Sound; slow-mo: 960fpsUp to 4K@30fps, 1080@240fps, EIS; slow-mo: 240fpsS21 5G offers higher resolutions and frame rates for video recording. Both have EIS.
DXOMark Mobile Score111 Mobile; 132 Selfie114 MobileOppo Reno8 Pro has a slightly better camera quality, especially in video performance, although S21 Selfie score is much better.
Camera Features4K/8K Video, Digital zoom, Optical zoom, OIS, RAW and many more.4K Video, Digital zoom and many more.S21 has more advanced camera features, like optical zoom and RAW for more manual control and post-processing.

2. Key Differences Analysis

Samsung Galaxy S21 5G Advantages

  • Superior Display Brightness: Significantly brighter screen for better outdoor visibility.
  • Advanced Camera Features: Offers telephoto lens, optical zoom, OIS, RAW capture and 8K video, providing greater creative control and better image quality in various scenarios.
  • Versatile Battery Features: Supports wireless charging and reverse wireless charging for added convenience.
  • Smaller and Lighter: More comfortable to hold and carry for extended periods.
  • Better Screen Protection: Utilizes the more durable Gorilla Glass Victus.
  • Better front facing camera and video recording experience

Oppo Reno8 Pro Advantages

  • Larger Display: More immersive experience for media consumption and gaming.
  • Faster Charging: Significantly quicker charging times.
  • Larger Battery: Longer battery life on a single charge.
  • Better Main Camera (on paper): Higher resolution main sensor for potentially more detailed images.
  • Better benchmark scores
  • Newer Bluetooth Version: Bluetooth 5.3 support for improved connectivity.
  • Has a Macro lens: Macro lens for taking close-up shots.

Trade-offs

  • S21 5G: While it has an amazing feature set, it has a smaller battery and slower charging speeds, and it is older (though still getting updates).
  • Reno8 Pro: Lacks some advanced camera features such as optical zoom, OIS and 8K recording and wireless charging options.

3. User Profiles & Recommendations

Samsung Galaxy S21 5G Ideal User

  • Photography Enthusiasts: Users who value versatile camera features including optical zoom and RAW image capture.
  • Outdoor Users: Those who need a bright screen for easy viewing in direct sunlight.
  • Tech Savvy: Users who appreciate cutting-edge features like wireless charging, reverse charging and the more powerful processor and better screen protection.
  • Users looking for high video quality: Users who are keen on high quality video recording will find S21 to be superior in this regard.
  • Users who like smaller devices: Those who prefer pocketable and lightweight designs.

Specific Use Cases:

  • Professional photography
  • Outdoor activities in bright sunlight
  • Fast paced gaming
  • Frequent travelling and those who rely on wireless charging
  • Those who require an excellent front facing camera.

Oppo Reno8 Pro Ideal User

  • Media Consumers: Users who prioritize a larger display for movies, videos, and gaming.
  • Power Users: Those who need a long-lasting battery and fast charging.
  • Social Media Users: Those who prioritize taking selfies.
  • Budget Conscious: User looking for slightly better specs, at a potentially lower price.

Specific Use Cases:

  • Mobile gaming, video watching, general browsing.
  • Long days away from a charger.
  • Users who want a modern looking phone.

4. Decision Framework

Key Questions for Buyers

  1. How important is camera versatility, optical zoom, and 8K video? If these are critical, the S21 5G is the better choice. If you mainly use basic camera features, the Reno8 Pro would be more than sufficient.
  2. Do you prioritize battery life and fast charging, or wireless charging and convenience? The Reno8 Pro offers better battery life and much faster charging, whereas the S21 5G has wireless and reverse wireless charging options.
  3. How important is outdoor screen visibility? The S21 5G is much better for outdoor viewing in bright conditions.

Scenario-Based Recommendations

  • Scenario 1: Professional Photographer: Choose the Samsung Galaxy S21 5G for its advanced camera features like telephoto lens, optical zoom, and RAW capture.
  • Scenario 2: Heavy Mobile Gamer: Choose the Oppo Reno8 Pro for its larger display, longer battery life and faster charging, and overall higher benchmark scores.
  • Scenario 3: Everyday User Needing Portability and Bright Screen: Choose the Samsung Galaxy S21 5G for its smaller size, brighter display and wireless charging.
  • Scenario 4: Everyday User Who Needs Great Battery Life & Fast Charging Choose the Oppo Reno8 Pro for its better battery life and charging speeds.

My Choice

If I were choosing between these two phones, I would choose the Samsung Galaxy S21 5G. Despite being an older model, its superior display brightness, and advanced camera features including optical zoom, OIS, and the ability to capture RAW images align better with my personal priorities. The versatile wireless charging capabilities are also a big plus for me. While the Oppo Reno8 Pro offers a larger battery and faster charging, the S21 5G's overall balance of features and capabilities makes it the better option. The S21 5G also provides a better front facing camera, making it more convenient for video calling.

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.