Galaxy S10 • Unlocked vs Galaxy S21 FE 5G • Locked AT&T

The Samsung Galaxy S10, released in March 2019, and the Samsung Galaxy S21 FE 5G, launched in January 2022, represent different generations within Samsung's smartphone lineup. While both devices offer a premium Android experience, the S21 FE 5G introduces several advancements in performance, display technology, and software longevity, reflecting its more recent release. These differences cater to varying user priorities, from those seeking established features to those desiring more current specifications and extended support.

When considering the long-term usability of these devices, their respective release timelines and software support policies are key differentiators.

• Release Timeline and Age: The Galaxy S10 was released in March 2019, making it significantly older than the Galaxy S21 FE 5G, which launched in January 2022. This age difference directly impacts the remaining software support and overall practical lifespan of each device.
• OS Support Duration: The Galaxy S10 received its last major Android operating system update with Android 12 (One UI 4) in early 2022, and its security updates concluded around April 2023 for most models, with the S10 Lite receiving updates until March 2024. In contrast, the Galaxy S21 FE 5G launched with Android 12 and is expected to receive up to four major Android OS upgrades, potentially extending to Android 16, along with security updates until at least the end of 2025.
• Repairability: The Galaxy S10 received a low repairability score of 3 out of 10 from iFixit, primarily due to extensive adhesive use, a soldered charging port, and an integrated fingerprint sensor that complicates screen replacements. The Galaxy S21 FE 5G, however, has a more favorable repairability score of 7.5 out of 10, indicating a comparatively easier process for component replacement.

The performance capabilities of the Galaxy S10 and Galaxy S21 FE 5G reflect the advancements in mobile processing technology over their respective release periods.

• Processor Capabilities: The Galaxy S10 is powered by a processor that, while capable at its release, is several generations older than the one found in the Galaxy S21 FE 5G. The S21 FE 5G features a more current-generation processor, enabling smoother operation for demanding applications, faster app loading times, and more efficient multitasking.
• System Responsiveness and Multitasking: Users of the Galaxy S21 FE 5G generally experience a more responsive system, with quicker transitions between apps and less noticeable lag during intensive tasks or gaming. The S10 still offers a capable experience for everyday use, but the S21 FE 5G provides a more fluid and future-ready performance, especially for users who frequently engage with graphically intensive games or complex productivity applications.
• Storage and RAM: Both devices offer various storage options, with the Galaxy S10 providing 128GB or 512GB and the S21 FE 5G offering 128GB or 256GB. The S10 also supports expandable storage via microSD, a feature not present in the S21 FE 5G. The S10 typically comes with 8GB of RAM, while the S21 FE 5G is available with either 6GB or 8GB, both configurations supporting efficient multitasking.

Both the Galaxy S10 and Galaxy S21 FE 5G feature high-quality displays, but they differ in key specifications that impact the visual experience.

• Display Technology and Resolution: The Galaxy S10 features a 6.1-inch Dynamic AMOLED display with a Quad HD+ resolution (1440 x 3040 pixels), offering a very sharp and detailed image. The Galaxy S21 FE 5G has a slightly larger 6.4-inch Dynamic AMOLED 2X display with a Full HD+ resolution (1080 x 2400 pixels). While the S10 has a higher pixel density, the S21 FE 5G's display still provides a clear and vibrant viewing experience.
• Refresh Rate and Smoothness: A notable difference is the refresh rate; the Galaxy S10 has a standard 60Hz refresh rate, while the Galaxy S21 FE 5G boasts a 120Hz refresh rate. This higher refresh rate on the S21 FE 5G results in noticeably smoother scrolling, more fluid animations, and a more responsive feel during gaming or general navigation.
• Brightness and Outdoor Visibility: Both displays offer vibrant colors and deep blacks characteristic of AMOLED technology. The Galaxy S21 FE 5G generally achieves higher peak brightness levels, which can improve outdoor visibility in bright conditions. Both screens are protected by durable glass, with the S10 featuring Gorilla Glass 6 and the S21 FE 5G utilizing Gorilla Glass Victus.

The camera systems on both the Galaxy S10 and Galaxy S21 FE 5G are designed to capture quality images and videos, though with some generational improvements in the newer model.

• Rear Camera System: The Galaxy S10 features a triple rear camera setup consisting of a 12 MP wide lens with optical image stabilization (OIS), a 12 MP telephoto lens with OIS and 2x optical zoom, and a 16 MP ultrawide lens. The Galaxy S21 FE 5G also has a triple rear camera system, including a 12 MP wide lens with OIS, an 8 MP telephoto lens with OIS and 3x optical zoom, and a 12 MP ultrawide lens. While the S10 has a higher resolution ultrawide, the S21 FE 5G offers a greater optical zoom capability.
• Photography Performance: Both devices are capable of producing good photos in well-lit conditions, with vibrant colors and detail. User feedback for the S10 indicates solid performance, though it can fall behind in very low-light scenarios compared to newer flagships. The S21 FE 5G generally performs well across various lighting conditions, with users noting rich detail and color.
• Video Recording and Front Camera: Both phones support 4K video recording at 60 frames per second. The Galaxy S10 has a 10 MP front-facing camera, while the Galaxy S21 FE 5G features a higher-resolution 32 MP front camera, which can result in more detailed selfies. The S21 FE 5G also includes features like Super Steady stabilization for video, though it's limited to 1080p at 30fps.