Galaxy S21 5G • Unlocked vs Galaxy S23 • Unlocked

The Samsung Galaxy S21 5G, released in January 2021, and the Samsung Galaxy S23, launched in February 2023, are both flagship Android smartphones from Samsung's popular S series. While they share a similar design philosophy and operate on the Android platform with Samsung's One UI, the Galaxy S23 introduces advancements in processing power, camera capabilities, and display brightness. This comparison will explore the practical differences between these two devices to help users understand which model best suits their needs.

When considering the long-term usability of a smartphone, factors like software support and physical durability are key. The Galaxy S21 5G and Galaxy S23 offer different timelines for software updates and varying degrees of repairability.

• Software Support: The Galaxy S21 5G, released in January 2021, launched with Android 11 and is eligible for four years of Android updates and five years of security updates, meaning its support is expected to extend up to Android 15. The newer Galaxy S23, released in February 2023 with Android 13, is promised four years of operating system updates (up to Android 17) and five years of security updates, with support ending around 2028. This provides the S23 with a longer period of official software longevity.
• Repairability: The Galaxy S21 5G generally received a repairability score of around 7.5 out of 10 by PBKreviews and 4 out of 10 by iFixit, noted for its relatively easier disassembly due to a plastic back and flat screen, though the battery can be challenging to remove. The Galaxy S23 series, while still rated around 4 out of 10 by iFixit for the Ultra model, has shown some internal design improvements aimed at making repairs, particularly battery replacements, simpler.
• Expected Lifespan: Both devices are built with durable materials and IP68 water and dust resistance. The Galaxy S23's extended software support and minor repairability enhancements suggest a slightly longer practical lifespan for users who prioritize the latest software features and security patches.

The performance of a smartphone impacts everything from app responsiveness to gaming and multitasking. Both the Galaxy S21 5G and Galaxy S23 deliver capable performance, but the newer model benefits from more recent hardware advancements.

• Processing Power: The Galaxy S21 5G is equipped with a capable processor that handles everyday tasks and demanding applications smoothly. The Galaxy S23 features a current-generation processor specifically optimized for the Galaxy series, which offers enhanced speed and improved power efficiency. This results in smoother operation for intensive tasks like high-fidelity gaming and complex video editing.
• Multitasking and Responsiveness: Both models come with 8GB of RAM, allowing for efficient multitasking and quick switching between applications. The Galaxy S23's faster internal storage options (UFS 4.0 for 256GB and higher variants) contribute to quicker app loading times and overall system responsiveness compared to the S21 5G.
• Battery Behavior: The Galaxy S21 5G houses a 4000 mAh battery, generally providing sufficient power for a full day of typical use. The Galaxy S23, despite having a slightly smaller 3900 mAh battery, is noted by users for its significantly improved battery endurance, often lasting a full day or more even with moderate to heavy usage, attributed to its more power-efficient processor.

The display is a primary interface for smartphone interaction, and both the Galaxy S21 5G and Galaxy S23 offer high-quality viewing experiences with some notable differences.

• Display Technology and Clarity: Both devices feature a Dynamic AMOLED 2X display, known for vibrant colors, deep blacks, and excellent contrast. The Galaxy S21 5G has a 6.2-inch display with a resolution of 1080 x 2400 pixels. The Galaxy S23 offers a slightly smaller 6.1-inch display with a resolution of 2340 x 1080 pixels, maintaining high clarity.
• Brightness and Outdoor Visibility: The Galaxy S21 5G can reach a peak brightness of up to 1300 nits, providing good visibility in various lighting conditions. The Galaxy S23 significantly enhances this with a peak brightness of 1750 nits, improving outdoor visibility and HDR content viewing, making it easier to use in bright sunlight.
• Refresh Rate: Both models feature an adaptive 120Hz refresh rate, which provides smooth scrolling and fluid animations. This adaptive technology adjusts the refresh rate based on content, helping to conserve battery life.

Camera capabilities are a significant consideration for many users, and both the Galaxy S21 5G and Galaxy S23 offer versatile camera systems with distinct strengths.

• Rear Camera System: The Galaxy S21 5G features a triple rear camera setup with a 12MP ultra-wide, 12MP wide, and a 64MP telephoto lens. It supports features like 8K Video Snap and Director's View. The Galaxy S23 upgrades the main sensor to 50MP, alongside a 12MP ultra-wide and a 10MP telephoto lens. The S23's larger main sensor and improved image processing contribute to better detail and low-light performance.
• Front Camera and Video: The Galaxy S21 5G includes a 10MP front camera. The Galaxy S23 features a 12MP front camera with autofocus and enhanced AI for selfies, including Super HDR, leading to more vibrant and detailed self-portraits, especially in challenging lighting. Both devices offer advanced video recording capabilities, including 4K 60fps across multiple lenses. The S23 also brings improvements to low-light video and offers Pro mode support for the front camera.
• Audio Experience: Both phones provide a good audio experience for media consumption and calls, with clear speaker output. The S21 5G was noted for improved speaker assembly and richer stereo sound. The S23 series also includes features like zoom-in mic for video recording, enhancing audio capture.