Galaxy S21 5G • Unlocked vs Galaxy S21 FE 5G • Unlocked

The Samsung Galaxy S21 5G, released in January 2021, and the Samsung Galaxy S21 FE 5G, launched a year later in January 2022, are both Android-based smartphones from Samsung's Galaxy S series. While they share a similar design philosophy and operate on the Android platform, the S21 FE introduces a slightly larger display and a different camera configuration, alongside an extended software support timeline due to its later release.

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

• Release Timeline: The Galaxy S21 5G was released in January 2021, while the Galaxy S21 FE 5G followed in January 2022 [35]. This one-year difference impacts their respective software support cycles.
• Software Longevity: The Galaxy S21 5G, originally launched with Android 11, received its final major Android OS update (Android 15/One UI 7) in the first half of 2025, with routine security updates concluding in February 2026 [10, 20, 23]. The Galaxy S21 FE 5G, starting with Android 12, is expected to receive up to Android 16, extending its major OS update support further [17, 22]. Its security update schedule was initially demoted to quarterly in late 2025 but was later reinstated to monthly, with an anticipated shift to quarterly by February or March 2026 [5, 22, 25].
• Repairability: Both models demonstrate a similar level of repairability, with teardowns indicating a score of approximately 7.5 out of 10. They are generally considered relatively easy to disassemble, though removing the battery can be challenging due to strong adhesive and the absence of pull tabs [1, 3, 4, 6, 11]. This suggests that common repairs by experienced technicians are feasible for both devices.

Both the Galaxy S21 5G and the Galaxy S21 FE 5G offer robust performance for daily tasks, though there are differences in their battery capacities and available RAM configurations.

• Processor Capabilities: Both devices are powered by a current-generation processor, which in many regions is the Snapdragon 888, while other regions received the Exynos 2100 [12, 21, 26, 41]. This hardware enables smooth handling of demanding applications, efficient multitasking, and responsive gaming experiences. Users generally report that both phones manage everyday tasks without significant slowdowns.
• Battery Behavior: The Galaxy S21 5G features a 4000 mAh battery, while the Galaxy S21 FE 5G comes with a larger 4500 mAh battery [12, 13, 26, 37]. Despite the S21 FE's larger capacity, some users have reported heating and battery drain issues, particularly with the Exynos variant or during heavy 5G usage, which can lead to more frequent charging [29, 31, 32, 33]. The S21 has also seen reports of battery drain issues, especially after certain software updates [18, 39].
• Storage and RAM: The Galaxy S21 5G typically offers 8GB of RAM with 128GB or 256GB of internal storage [12, 35]. The Galaxy S21 FE 5G provides options for 6GB or 8GB of RAM, alongside 128GB or 256GB of storage [21, 26, 35]. Neither model includes a microSD card slot for expandable storage [35, 34].

The display experience on both the Galaxy S21 5G and the Galaxy S21 FE 5G is vibrant, though there are slight distinctions in size and refresh rate implementation.

• Display Technology and Size: Both phones feature a Dynamic AMOLED 2X display with Full HD+ resolution (1080 x 2400 pixels) and Corning Gorilla Glass Victus for protection [9, 12, 19, 26]. The Galaxy S21 5G has a 6.2-inch screen, offering a compact viewing experience [9, 12, 37]. The Galaxy S21 FE 5G provides a slightly larger 6.4-inch display, which can be beneficial for media consumption and productivity [9, 13, 26].
• Refresh Rate and Brightness: Both devices support a 120Hz refresh rate for smooth scrolling and animations [9, 19, 26]. However, the Galaxy S21 5G's 120Hz panel is adaptive, meaning it can dynamically adjust the refresh rate based on content to conserve power [19]. The S21 FE's 120Hz refresh rate is generally considered less adaptive [19]. The Galaxy S21 5G can achieve a peak brightness of 1300 nits, while the S21 FE 5G has a slightly lower peak brightness of 1200 nits [21, 28].
• Clarity and Viewing Experience: Despite the S21 FE's larger screen size with the same resolution, the difference in pixel density is often not noticeable in typical use [9]. Both displays offer deep blacks and vibrant colors characteristic of AMOLED technology, providing a clear and engaging viewing experience for various content.

The camera systems on the Galaxy S21 5G and Galaxy S21 FE 5G are capable, but they differ in their telephoto and front-facing camera specifications.

• Rear Camera Configuration: Both phones feature a triple-camera setup with a 12MP wide-angle lens and a 12MP ultrawide lens [19, 21, 26, 37]. The primary difference lies in their telephoto lenses. The Galaxy S21 5G includes a 64MP telephoto sensor that utilizes 3x hybrid zoom [19, 21, 37]. In contrast, the Galaxy S21 FE 5G is equipped with an 8MP telephoto lens offering 3x optical zoom [19, 21, 26]. While the S21 FE's optical zoom can provide more detailed zoomed-in shots at 3x, the S21's higher megapixel count for its telephoto can offer flexibility for cropping [19, 27].
• Front Camera: The Galaxy S21 5G has a 10MP front-facing camera with autofocus, which can be beneficial for sharp selfies and video calls [19, 21, 37]. The Galaxy S21 FE 5G features a higher-resolution 32MP front camera, but it lacks autofocus [19, 21, 26]. Some users may find the S21's autofocus more practical for consistent clarity, despite the S21 FE's higher pixel count [21].
• Video and Audio: Both devices support 4K video recording at 30/60fps and offer stereo speakers for media consumption [26, 27]. Microphone quality for calls and recording is generally clear on both.