Galaxy S10 Vs Galaxy S21 5G

Galaxy S10
Galaxy S10
Starting at

£112.00

£639.00 new

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Galaxy S21 5G
Galaxy S21 5G
Starting at

£122.00

£859.00 new

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Ratings

The Samsung Galaxy S10, released in 2019, and the Galaxy S21 5G, launched in 2021, represent two distinct eras of Samsung’s flagship smartphone development. While the Galaxy S10 was a milestone for its high-resolution display and versatile hardware features, the Galaxy S21 5G focuses on modern connectivity and smoother visual performance. Both devices run on the Android operating system, though they differ significantly in their software version compatibility and long-term support. Choosing between them involves weighing the benefits of classic hardware features against the advantages of contemporary processing power and network speeds.

Scores

Durability

The two-year gap between these models significantly impacts their expected lifespan and software relevance in the current mobile landscape.

  • Software Longevity: The Galaxy S21 5G benefits from a much longer update cycle, receiving several more years of Android version upgrades and security patches compared to the Galaxy S10. While the S10 has reached the end of its major software update path, the S21 5G remains compatible with the latest features and security protocols.
  • Physical Resilience: The Galaxy S10 features a glass front and back, whereas the Galaxy S21 5G introduces a reinforced polycarbonate back designed to resist cracks from accidental drops. Both devices offer high levels of water and dust resistance, but the S21 5G’s newer internal seals may provide more reliable protection over time.
  • Repairability: Both smartphones are designed with integrated components that require professional attention for battery or screen replacements, though the S21 5G’s flatter display design can sometimes simplify the screen repair process compared to the S10’s curved edges.

Year of Release

2019

2021

Compatible with latest Update

No

Yes

OS

Android

Android

Foldable

No

No

Performance

Daily tasks and demanding applications reveal a clear distinction in how these devices handle modern software requirements and power management.

  • System Responsiveness: The Galaxy S21 5G handles multitasking and resource-heavy apps with greater ease, providing a fluid experience when switching between tools or playing modern games. The Galaxy S10 remains capable for standard browsing and social media, but users may notice slight pauses when loading larger files or the latest software updates.
  • Battery Efficiency: With a larger internal battery and more efficient power management, the Galaxy S21 5G typically lasts longer through a full day of varied use. Choosing a quality-assured refurbished option for either model ensures the battery has been tested to meet high functional standards, providing reliable daily performance.
  • Storage Flexibility: The Galaxy S10 includes a physical slot for memory expansion, allowing users to increase storage capacity as needed. In contrast, the Galaxy S21 5G relies on fixed internal storage, requiring users to select their needed capacity at the point of acquisition.

Memory

8 GB

8 GB

Screen quality

While both devices utilise high-quality display technology, they prioritise different aspects of the visual experience, from sharpness to motion smoothness.

  • Motion Smoothness: The Galaxy S21 5G features a high refresh rate that makes scrolling through menus and animations appear significantly smoother and more responsive to touch. The Galaxy S10 uses a standard refresh rate, which is functional but lacks the fluid visual transition found on the newer model.
  • Clarity and Resolution: Interestingly, the Galaxy S10 offers a higher maximum resolution, providing exceptional sharpness for viewing high-definition photos and text. The Galaxy S21 5G opts for a slightly lower resolution to balance battery life and performance, though it remains highly legible for all standard viewing distances.
  • Outdoor Visibility: The display on the Galaxy S21 5G is capable of reaching higher brightness levels, making it easier to read maps or messages under direct sunlight compared to the Galaxy S10.

Resolution

1440 x 3040

1080 x 2400

Screen type

Dynamic AMOLED

Dynamic AMOLED 2X

Audiovisual

The camera systems on both devices are designed for versatility, but the newer hardware in the S21 5G offers specific advantages for zoom and video.

  • Zoom and Detail: The Galaxy S21 5G features a high-resolution secondary sensor that allows for much clearer zoomed-in photos, capturing distant details with more precision than the Galaxy S10. This makes it better suited for wildlife photography or capturing details at a distance during events.
  • Low-Light Performance: Improvements in image processing allow the Galaxy S21 5G to produce clearer, brighter photos in dim environments with less visual noise. The Galaxy S10 performs well in daylight but may struggle to maintain the same level of detail when the lights go down.
  • Video Capabilities: Users who record a lot of video will find the S21 5G offers more advanced stabilisation and higher resolution recording options, resulting in smoother footage that looks professional even when captured while walking.

Main camera

12 megapixels

12 megapixels

Front camera

10 megapixels

10 megapixels

Miscellaneous

Practical hardware differences, such as connectivity and physical ports, play a major role in how these devices fit into a user's existing ecosystem.

  • Network Connectivity: The Galaxy S21 5G is compatible with the latest high-speed mobile networks, offering faster download speeds and better connection stability in crowded areas. The Galaxy S10 is limited to previous-generation networks, which are still widely available but do not offer the same future-proofing.
  • Physical Connections: A notable feature of the Galaxy S10 is the inclusion of a traditional headphone jack, allowing for the use of wired audio equipment without adapters. The Galaxy S21 5G has removed this port, requiring the use of wireless headphones or a connector for the charging port.
  • Security and Handling: The Galaxy S21 5G features a more advanced fingerprint sensor located under the screen that is faster and more reliable than the version found in the S10. Additionally, the S21 5G is slightly larger, which may influence how comfortable it feels for users with smaller hands.

Weight

175 g

169 g

Screen size (in)

6.1

6.2

Network

4G

5G

SIM card

Physical SIM

Dual Physical SIM + eSIM

Carrier compatibility

Unlocked

Unlocked

Connector

USB-C + Jack 3.5mm

USB-C

User consensus from various tech communities highlights that the Galaxy S10 is still remembered fondly for its versatile approach to hardware, particularly the inclusion of the headphone jack and expandable storage. Many users appreciate its compact feel and high-resolution screen. However, common criticisms of the S10 today focus on its declining battery health and the lack of modern software updates. On the other hand, the Galaxy S21 5G receives praise for its smooth 120Hz display and its reliable 5G connectivity, which users find essential for modern commuting and travel. Some users do express disappointment over the removal of the microSD slot and the shift to a plastic-based back material.

Users who prioritise legacy features like wired audio and expandable storage, or those who prefer a very high-resolution display in a compact form, will find the Galaxy S10 to be a practical choice. Conversely, users who require a device that will remain secure and updated for several years, or those who value smooth screen animations and fast mobile data, will be better served by the Galaxy S21 5G. Opting for a sustainable choice like a refurbished model allows users to access these technologies while reducing electronic waste. Ultimately, the decision rests on whether you value the versatile hardware of the past or the refined speed and longevity of the present.

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