Galaxy A55 vs Galaxy S21+ 5G

The Samsung Galaxy A55 and the Samsung Galaxy S21 Plus 5G are both Android smartphones from Samsung, though they originate from different product lines and release years. The Galaxy A55, released in March 2024, is part of Samsung's mid-range A-series, while the Galaxy S21 Plus 5G, launched in January 2021, was a flagship device in the premium S-series. While the A55 benefits from newer software support and a larger battery, the S21 Plus 5G offers a more advanced camera system and a higher-tier processor from its original release. Both devices run on the Android operating system with Samsung's One UI interface.

When considering the practical lifespan of these devices, their release timelines and software support policies are key factors.

• Release Timeline: The Galaxy A55 was released in March 2024, making it a newer device compared to the Galaxy S21 Plus 5G, which launched in January 2021. This difference in release dates directly impacts their remaining software support.
• OS Support Duration: The Galaxy A55 is slated to receive four major Android OS updates and five years of security updates from its launch. The Galaxy S21 Plus 5G, having launched with Android 11, has received updates up to Android 14, completing its major OS update cycle. It typically receives security updates for 4-5 years from its release.
• Build Materials: The Galaxy A55 features a glass front (Gorilla Glass Victus+) and glass back with an aluminum frame, offering a robust construction. The Galaxy S21 Plus 5G also has a glass front (Gorilla Glass Victus) and an aluminum frame, but it uses a plastic back. Both devices offer water and dust resistance, with the A55 rated IP67 and the S21 Plus 5G rated IP68, indicating slightly better protection for the S21 Plus 5G against immersion.

The performance of a smartphone is crucial for daily tasks, from app usage to multitasking and gaming.

• Processor Capabilities: The Galaxy A55 is equipped with a current-generation processor designed to handle everyday applications and moderate multitasking smoothly. The Galaxy S21 Plus 5G, as a former flagship, features a high-tier processor from its release year, which provides strong performance for demanding applications and gaming.
• RAM and Storage: Both devices offer 8GB of RAM, with the Galaxy A55 also having a 12GB RAM option in some configurations, contributing to efficient multitasking. The Galaxy A55 supports expandable storage via a microSD card, allowing users to increase their storage capacity beyond the internal 128GB or 256GB options. The Galaxy S21 Plus 5G comes with 128GB or 256GB of internal storage but does not offer microSD card expansion.
• Battery Behavior: The Galaxy A55 houses a larger 5000 mAh battery, which generally translates to extended usage times, with some reports indicating over two days of use on a single charge for moderate users. The Galaxy S21 Plus 5G has a 4800 mAh battery, providing reliable all-day power for many users. The S21 Plus 5G also supports wireless charging and reverse wireless charging, features not present on the A55.

The display is a primary interface for smartphone interaction, and both devices offer vibrant viewing experiences.

• Display Technology and Size: The Galaxy A55 features a 6.6-inch Super AMOLED display, while the Galaxy S21 Plus 5G has a slightly larger 6.7-inch Dynamic AMOLED 2X display. Both technologies deliver deep blacks and vibrant colors.
• Resolution and Refresh Rate: Both phones offer a Full HD+ resolution (1080x2340 for A55, 1080x2400 for S21 Plus 5G), providing clear and detailed visuals. They also both feature a 120Hz refresh rate, contributing to smoother scrolling and more fluid animations. The S21 Plus 5G's refresh rate is adaptive, adjusting between 48Hz and 120Hz to optimize battery life.
• Brightness: The Galaxy A55 can reach a peak brightness of 1000 nits in High Brightness Mode, ensuring good visibility outdoors. The Galaxy S21 Plus 5G offers a higher peak brightness of 1300 nits, which can provide even better visibility in bright conditions.

The camera systems on both smartphones are designed to capture a variety of moments, though with different strengths.

• Rear Camera System: The Galaxy A55 features a triple rear camera setup with a 50MP main sensor (with Optical Image Stabilization), a 12MP ultrawide lens, and a 5MP macro lens. The Galaxy S21 Plus 5G also has a triple camera system, consisting of a 12MP wide-angle main camera (with OIS), a 12MP ultrawide camera, and a 64MP telephoto lens that offers 3x hybrid optical zoom. The dedicated telephoto lens on the S21 Plus 5G provides more versatile zoom capabilities.
• Photography Performance: The A55's 50MP main camera captures detailed shots, performing well in various lighting conditions, including improved low-light photography due to AI processing. The S21 Plus 5G's camera system is noted for its ability to capture detailed and color-rich images, with features like Night Mode and Pro Mode for enhanced control.
• Video Recording: Both devices are capable of recording 4K video at 30 frames per second with their main cameras. The Galaxy S21 Plus 5G further offers 8K video recording at 24 frames per second, providing a higher resolution option for video content creators.
• Front Camera: The Galaxy A55 is equipped with a 32MP front-facing camera, capable of 4K video recording. The Galaxy S21 Plus 5G has a 10MP front camera, which also supports 4K video recording.