Galaxy S21 5G • Unlocked vs Galaxy S24 • Unlocked

The Samsung Galaxy S21 5G, released in January 2021, and the Samsung Galaxy S24, launched in January 2024, represent different generations within Samsung's flagship smartphone series. While both devices offer a premium Android experience, the Galaxy S24 introduces significant advancements in software longevity, display technology, and overall performance, reflecting three years of technological evolution. Both run on the Android operating system, but the S24 benefits from a much extended software support policy.

When considering the long-term usability of a smartphone, factors like release age and software support are key. The Galaxy S24, being a newer device, offers a considerably longer practical lifespan through extended software updates.

• Release Timeline: The Galaxy S21 5G was released in January 2021, while the Galaxy S24 followed in January 2024. This three-year difference means the S24 benefits from more recent hardware and design.
• OS Support Duration: The Galaxy S24 series is notable for its commitment to seven years of OS upgrades and security updates, meaning it is expected to receive updates through Android 21. In contrast, the Galaxy S21 5G typically received four generations of OS updates and five years of security patches from its release.
• Practical Lifespan: Users prioritizing maximum software longevity and access to the latest Android features will find the Galaxy S24 a more future-proof option due to its extended update policy. Both devices feature an IP68 rating for dust and water resistance, contributing to their physical durability.

The performance of a smartphone is largely determined by its internal components, impacting everything from app responsiveness to gaming capabilities and battery efficiency. The Galaxy S24, as a newer model, incorporates more advanced processing power.

• Processing Capabilities: The Galaxy S24 features a more current-generation processor, which translates to smoother handling of demanding applications, faster app loading times, and more efficient multitasking compared to the Galaxy S21 5G. The S21 5G, while powerful for its time, uses an older generation processor.
• System Responsiveness: Users will likely experience a more fluid and responsive overall system on the Galaxy S24, especially when navigating complex interfaces or switching between multiple applications. The S24's processor is designed for improved power efficiency and speed.
• Battery Behavior: Both devices are equipped with a 4000 mAh battery. However, the Galaxy S24's newer, more efficient processor and software optimizations contribute to better real-world battery performance, with many users reporting it comfortably lasts a full day of use. Some user experiences suggest the S24's battery life is a significant asset.
• Storage and RAM: Both models offer 8GB of RAM, with storage options typically including 128GB and 256GB. The Galaxy S24 also has a 512GB option.

The display is a primary interface for any smartphone, and both the Galaxy S21 5G and Galaxy S24 feature high-quality screens, though the newer model offers enhancements in brightness and adaptive refresh rates.

• Display Technology: Both phones utilize a Dynamic AMOLED 2X display, known for its vibrant colors, deep blacks, and excellent contrast.
• Brightness Levels: The Galaxy S24 offers a significantly higher peak brightness of up to 2600 nits, providing superior visibility in bright outdoor conditions. The Galaxy S21 5G has a peak brightness of 1300 nits.
• Refresh Rate and Smoothness: Both devices feature an adaptive 120Hz refresh rate, which adjusts dynamically based on content to provide smooth scrolling and animations while conserving battery. The S24's refresh rate can dynamically switch between 1Hz and 120Hz, offering greater efficiency than the S21's 48Hz to 120Hz range.
• Screen Size and Resolution: The Galaxy S24 has a 6.2-inch FHD+ display (1080 x 2340 pixels), while the Galaxy S21 5G also features a 6.2-inch FHD+ display (1080 x 2400 pixels). The S24 also features slimmer bezels for a more immersive viewing experience.

Camera capabilities are a crucial aspect for many users, and while both phones offer versatile camera systems, the Galaxy S24 benefits from newer image processing and additional features.

• Camera System: Both the Galaxy S21 5G and Galaxy S24 feature a triple-lens rear camera setup, typically including a main wide-angle lens, an ultra-wide lens, and a telephoto lens. The S24 has a 50MP main camera, 12MP ultra-wide, and 10MP telephoto with 3x optical zoom. The S21 5G has a 12MP wide, 12MP ultra-wide, and a 64MP telephoto lens with 3x hybrid optical zoom.
• Photography Performance: The Galaxy S24 offers improved image processing, resulting in more natural-looking colors and better detail, especially in challenging lighting conditions. The S21 5G was praised for its sharp cameras and improved focus for its time. The S24's selfie camera also features autofocus, a useful enhancement.
• Video Recording: The Galaxy S24 can record slow-motion video at 4K 120fps, a significant upgrade from the S21 5G's 1080p slow-motion capability. Both phones support up to 8K video recording.
• Audio Experience: Both devices offer stereo speakers for media consumption. The S21 5G's Pro Video mode allowed for control over microphones, which is beneficial for recording.