Galaxy A06 Vs Galaxy S21 Ultra 5G

Galaxy A06
Galaxy A06
Starting at

Refurbished price:£70.00

Versus £158.08 new

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Galaxy S21 Ultra 5G
Galaxy S21 Ultra 5G
Starting at

Refurbished price:£186.00

Versus £1,800.00 new

See options

Ratings

The Samsung Galaxy A06 (2024) and the Samsung Galaxy S21 Ultra 5G (2021) represent distinct segments of Samsung's smartphone offerings. While the Galaxy A06 focuses on essential functionality and extended battery life, the Galaxy S21 Ultra 5G, a former flagship, prioritizes advanced camera capabilities, a high-resolution display, and overall premium performance. Both devices operate on the Android platform, but their software support timelines and hardware capabilities differ significantly, catering to varied user needs.

Scores

Durability

The practical lifespan of these devices is influenced by their release timelines and software support policies.

  • Release Timeline: The Galaxy S21 Ultra 5G was released in January 2021, making it an older device compared to the Galaxy A06, which launched in August 2024 (4G version) or February 2025 (5G version). This age difference impacts their remaining software support.
  • Software Longevity: The Galaxy S21 Ultra 5G typically received four major Android OS updates and five years of security updates from its release. The Galaxy A06 (4G) is expected to receive two major Android OS updates, with its final update being Android 16/One UI 8, while the Galaxy A06 5G is promised four major OS updates, potentially extending to Android 19. Samsung generally provides up to seven years of security updates for its Galaxy A series.
  • Practical Lifespan: Users prioritizing the longest possible software support and access to the latest Android features will find the Galaxy A06 5G offers a more extended future-proof experience due to its newer release and longer update commitment. The S21 Ultra 5G, while still receiving security patches, has completed its major OS update cycle.

Year of Release

2024

2021

Compatible with latest Update

Yes

Yes

OS

Android

Android

Foldable

No

No

Performance

Performance varies considerably between these two models, reflecting their different design philosophies and target users.

  • Processing Power: The Galaxy A06, equipped with a MediaTek Helio G85 processor (or Dimensity 6300 for the 5G variant), handles everyday tasks like social media, web browsing, and light multitasking smoothly. Users report it performs well for basic daily use, though heavy gaming or intensive multitasking might lead to noticeable slowdowns. The Galaxy S21 Ultra 5G, powered by a high-end processor (Qualcomm Snapdragon 888 or Exynos 2100), delivers robust performance for demanding applications, graphic-intensive games, and seamless multitasking.
  • Multitasking and Storage: The Galaxy A06 typically comes with 4GB or 6GB of RAM and 64GB or 128GB of internal storage, expandable via microSD card. The Galaxy S21 Ultra 5G offers significantly more RAM, starting at 12GB and going up to 16GB, paired with 128GB, 256GB, or 512GB of internal storage, though it lacks expandable storage. This larger RAM capacity on the S21 Ultra 5G allows for more applications to run concurrently without performance degradation.
  • Battery Behavior: Both devices feature a 5000mAh battery. The Galaxy A06 is noted for its impressive battery life, often lasting a full day or even two with moderate use, and supports 25W fast charging. The Galaxy S21 Ultra 5G also provides all-day battery life under typical usage, though enabling its highest screen resolution and 120Hz refresh rate can increase power consumption. It supports 25W wired and 15W wireless charging.

Memory (GB)

4 GB

12 GB

Screen quality

The display experience is a key differentiator, with the Galaxy S21 Ultra 5G offering a more advanced visual presentation.

  • Display Technology and Resolution: The Galaxy A06 features a 6.7-inch PLS LCD with an HD+ resolution (900x1600 pixels). While described as vibrant for its category, it offers a more basic viewing experience. The Galaxy S21 Ultra 5G boasts a 6.8-inch Dynamic AMOLED 2X display with a Quad HD+ resolution (3200x1440 pixels), providing significantly sharper images, deeper blacks, and richer colors.
  • Refresh Rate and Brightness: The Galaxy A06 (4G) has a standard 60Hz refresh rate, while the 5G variant offers 90Hz for slightly smoother scrolling. The Galaxy S21 Ultra 5G features an adaptive refresh rate that dynamically adjusts between 10Hz and 120Hz, ensuring smooth motion while optimizing battery consumption. The S21 Ultra 5G also achieves a peak brightness of up to 1500 nits, making it highly visible even in bright outdoor conditions, a feature not matched by the A06.
  • Screen Protection: The Galaxy S21 Ultra 5G incorporates Corning Gorilla Glass Victus for enhanced durability against scratches and drops. Information on specific screen protection for the Galaxy A06 is less prominent, though some sources mention Gorilla Glass.

Resolution

720 x 1600

1440 x 3200

Screen type

PLS LCD

Dynamic AMOLED 2X

Audiovisual

Camera capabilities are a major point of divergence, with the S21 Ultra 5G designed for advanced photography.

  • Rear Camera System: The Galaxy A06 includes a dual-camera setup with a 50MP primary sensor and a 2MP depth sensor. Users find it suitable for casual photos in good lighting, but performance for moving subjects or in low-light conditions is less impressive. The Galaxy S21 Ultra 5G features a versatile quad-camera system: a 108MP main sensor with optical image stabilization (OIS), a 12MP ultra-wide lens, and two 10MP telephoto lenses offering 3x and 10x optical zoom, respectively, also with OIS. This setup allows for exceptional detail, wide-angle shots, and significant optical zoom capabilities, including a 100x digital 'Space Zoom'.
  • Front Camera and Video: The Galaxy A06 has an 8MP front camera for selfies and video calls. The Galaxy S21 Ultra 5G is equipped with a 40MP front camera, delivering high-resolution selfies. Both devices are capable of video recording, but the S21 Ultra 5G offers more advanced video features and higher resolution recording options, including 8K video.
  • Low-Light Performance: The S21 Ultra 5G's larger sensors, OIS, and advanced processing contribute to significantly better low-light photography compared to the Galaxy A06.

Main camera

50 megapixels

108 megapixels

Front camera

8 megapixels

40 megapixels

Miscellaneous

Beyond core features, several practical elements distinguish these two smartphones.

  • Connectivity: The Galaxy A06 is available in both 4G and 5G variants, with the 5G model offering faster mobile data speeds. Both support Wi-Fi 5 (802.11ac) and Bluetooth 5.3. The Galaxy S21 Ultra 5G supports 5G connectivity, including Wi-Fi 6E for faster local network speeds, and Bluetooth 5.2.
  • Ports and Sensors: Both devices include a USB Type-C port for charging and data transfer. The Galaxy A06 retains a 3.5mm headphone jack, which is absent on the Galaxy S21 Ultra 5G. For security, the A06 features a side-mounted fingerprint sensor, while the S21 Ultra 5G uses an in-display fingerprint sensor. The S21 Ultra 5G also supports the S Pen stylus, a feature not found on the A06.
  • Design and Build: The Galaxy A06 has dimensions of 167.3 x 77.3 x 8.0mm and weighs 189g (4G) or 191g (5G), featuring a glass front and plastic back/frame. The Galaxy S21 Ultra 5G is slightly larger and heavier at 165.1 x 75.6 x 8.9mm and 227g/229g, with a more premium build of Gorilla Glass Victus on both the front and back, and an aluminum frame. The S21 Ultra 5G also has an IP68 rating for dust and water resistance, while the A06 5G has an IP54 rating.

Weight

189 g

227 g

Width

6,59 cm

7,56 cm

Height

3,04 cm

16,15 cm

Depth

0,31 cm

0,89 cm

Screen size (in)

6.7

6.8

Mobile network

4G

5G

SIM card

Dual Physical SIM

Dual Physical SIM + eSIM

Carrier compatibility

Unlocked

Unlocked

Connector

USB-C + Jack 3.5mm

USB-C

User feedback for the Galaxy A06 often highlights its strong battery life and suitability for basic daily tasks like social media and communication. Many appreciate its value for money, though some users report occasional lag, particularly with the 64GB storage variant or during heavy multitasking. The camera is generally considered adequate for casual photos but not for demanding scenarios.

The Galaxy S21 Ultra 5G receives consistent praise for its exceptional camera system, especially its zoom capabilities, and its vibrant, high-resolution, and smooth 120Hz display. Users also commend its powerful performance for all types of applications. Common observations include its larger size and weight, and some users have noted that the battery life, while generally good, can be impacted by continuous use of the highest display settings. The absence of a headphone jack and expandable storage are also points of consideration for some.

Users prioritizing a long-lasting battery, a 3.5mm headphone jack, and a device primarily for communication and light media consumption may find the Galaxy A06 well-suited to their needs. Conversely, those who require a top-tier camera system, a premium display for media consumption and gaming, and robust performance for demanding applications will likely prefer the Galaxy S21 Ultra 5G. Both devices offer a quality-assured refurbished option, providing an eco-friendly alternative for consumers.

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