Galaxy A55 Vs Galaxy S21 5G

Galaxy A55
Galaxy A55
Starting at

Refurbished price:£192.21

Versus £479.00 new

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Galaxy S21 5G
Galaxy S21 5G
Starting at

Refurbished price:£128.00

Versus £829.00 new

See options

Ratings

The Samsung Galaxy A55, released in 2024, and the Samsung Galaxy S21 5G, launched in 2021, represent two different approaches to the smartphone experience. While the Galaxy A55 is a modern mid-range device focusing on longevity and a large display, the Galaxy S21 5G was a flagship model designed for high-end performance in a compact form factor. Both run on Samsung's One UI interface over Android, though their release dates mean they sit at very different points in their respective software lifecycles.

Scores

Durability

The Galaxy A55 and Galaxy S21 5G offer different advantages regarding their physical construction and the length of time they will remain compatible with the latest software.

  • Software Longevity: As a much newer release, the Galaxy A55 is scheduled to receive software updates and security patches for several years longer than the Galaxy S21 5G. This makes the A55 a more suitable option for users who plan to keep their device for a long period, whereas the S21 5G is approaching the end of its official manufacturer support cycle.
  • Build Quality and Repair: The Galaxy A55 features a glass back and an aluminium frame, providing a sturdy feel, while the Galaxy S21 5G uses a reinforced polycarbonate back which is highly resistant to cracks from drops. Choosing a quality-assured refurbished option can extend the utility of these well-built devices.

Year of Release

2024

2021

Compatible with latest Update

Yes

Yes

OS

Android

Android

Foldable

No

No

Performance

While the Galaxy S21 5G was engineered for high-end responsiveness, the Galaxy A55 focuses on modern efficiency and long-lasting power for daily use.

  • Multitasking and Speed: The Galaxy S21 5G was built to handle intensive applications and rapid switching between tasks, maintaining a high level of responsiveness even years after its release. In contrast, the Galaxy A55 is designed for consistent, reliable performance in everyday scenarios like social media and streaming, benefiting from more recent internal optimisations.
  • Battery Endurance and Storage: With a significantly larger battery capacity, the Galaxy A55 is better suited for users who need their device to last through a full day of heavy use. Additionally, the A55 supports expandable storage via a microSD card, a feature absent on the S21 5G, which relies solely on its fixed internal capacity.

Memory (GB)

8 GB

8 GB

Screen quality

Both devices feature high-quality AMOLED displays with smooth motion, but they differ significantly in size and outdoor visibility.

  • Display Size and Immersion: The Galaxy A55 features a 6.6-inch screen, providing a more expansive area for watching videos or reading documents. The Galaxy S21 5G offers a more compact 6.2-inch display, which makes the device easier to navigate with one hand while still providing a high-quality visual experience.
  • Visual Fluidity and Brightness: Both smartphones utilise advanced display technology that ensures smooth scrolling and animations through a high refresh rate. The Galaxy A55 benefits from a newer panel that can reach higher peak brightness levels, making it easier to view content clearly when used outdoors in direct sunlight compared to the older Galaxy S21 5G.

Resolution

1080 x 2340

1080 x 2400

Screen type

Super AMOLED

Dynamic AMOLED 2X

Audiovisual

The camera systems on these two phones cater to different photography styles, with one focusing on zoom and the other on modern processing and close-ups.

  • Versatility and Zoom: The Galaxy S21 5G includes a dedicated telephoto lens, allowing users to capture clear photos from a distance without losing detail. The Galaxy A55 lacks a dedicated zoom lens, instead featuring a macro sensor for close-up photography of small objects, which serves a different creative purpose.
  • Image Processing and Video: While the Galaxy A55 uses modern software to produce balanced and clear images in various lighting conditions, the Galaxy S21 5G retains flagship-level video capabilities, such as higher resolution recording options and advanced stabilisation. Users who frequently record video for social media or personal projects may find the S21's feature set more aligned with their needs.

Main camera

50 megapixels

12 megapixels

Front camera

32 megapixels

10 megapixels

Miscellaneous

Practical features like charging methods and physical dimensions highlight the different target audiences for these two Samsung models.

  • Charging and Biometrics: The Galaxy S21 5G supports wireless charging and features an ultrasonic fingerprint sensor for secure access. The Galaxy A55 relies on wired charging and an optical fingerprint sensor, which provides a different but equally reliable method for unlocking the device and authenticating payments.
  • Design and Portability: The Galaxy S21 5G is notably lighter and slimmer, appealing to users who prefer a phone that fits easily into small pockets and is comfortable for one-handed use. The Galaxy A55 has a more substantial feel with a glass back and a larger footprint, reflecting the modern trend toward bigger devices that prioritise screen real estate.

Weight

213 g

169 g

Screen size (in)

6.6

6.2

Mobile network

5G

5G

SIM card

Dual Physical SIM

Dual Physical SIM + eSIM

Carrier compatibility

Unlocked

Unlocked

Users on community forums often praise the Galaxy S21 5G for its ergonomic size and the high quality of its zoom camera, though some note that the battery life can be a limiting factor for power users. Conversely, the Galaxy A55 receives positive feedback for its impressive battery endurance and the clarity of its large display, while some users miss the more advanced camera features found in the S-series.

The choice between these two smartphones depends largely on individual priorities. Users who value a compact design, wireless charging, and the ability to zoom in on distant subjects will find the Galaxy S21 5G to be a capable companion. Those who prioritise a large screen for media consumption, long-lasting battery life, and many years of future software updates will likely find the Galaxy A55 more suited to their requirements. Opting for a sustainable choice like a refurbished model allows users to access flagship features or modern longevity while contributing to a more circular economy.

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