Galaxy S21 Ultra 5G • Unlocked vs Galaxy Z Flip4 • Unlocked

The Samsung Galaxy S21 Ultra 5G, released in January 2021, and the Samsung Galaxy Z Flip4, launched in August 2022, represent distinct approaches to smartphone design and functionality within the Android ecosystem. While both offer premium experiences, they cater to different user preferences through their form factors and feature sets. The S21 Ultra 5G is a traditional slab-style smartphone known for its expansive display and advanced camera system, whereas the Z Flip4 distinguishes itself with a unique foldable clamshell design that prioritizes portability and a compact footprint.

When considering the longevity of these devices, several factors come into play, including their release timelines, software support, and physical durability.

• Release Timeline and Software Support: The Galaxy S21 Ultra 5G, being an earlier release from January 2021, has received several major Android operating system updates since its launch. The Galaxy Z Flip4, released in August 2022, benefits from a later starting point for its software update cycle. Samsung typically provides around four to five years of operating system updates and five years of security updates for its flagship devices from this era, meaning the Z Flip4 will likely receive software support for a longer duration than the S21 Ultra 5G.
• Physical Durability: The S21 Ultra 5G features a traditional design with Gorilla Glass Victus on both the front and back, along with an aluminum frame, contributing to its robust feel. It also carries an IP68 rating for dust and water resistance, indicating a high level of protection against environmental elements. The Z Flip4, with its foldable design, uses Ultra-Thin Glass for its main display, which is more susceptible to scratches from fingernails compared to traditional smartphone glass. While it has an Armor Aluminum frame and an IPX8 water resistance rating, it lacks official dust resistance, and some users have reported concerns regarding the long-term durability of the hinge and internal screen protector.
• Expected Practical Lifespan: Both devices are built with quality components, but the S21 Ultra 5G's conventional design may offer a more predictable long-term physical resilience for users who prioritize maximum durability. The Z Flip4's innovative folding mechanism, while offering unique benefits, introduces additional considerations for care and handling over an extended period.

Both the Galaxy S21 Ultra 5G and the Galaxy Z Flip4 offer capable performance for daily tasks, though they feature different internal components and memory configurations.

• Processor Capabilities: The Galaxy S21 Ultra 5G is equipped with a high-end processor from its release year, providing smooth operation for demanding applications and multitasking. The Galaxy Z Flip4, being a newer device, incorporates a more recent generation of processor, which offers enhanced efficiency and slightly improved performance for intensive tasks like gaming or complex app usage.
• Storage and RAM: The S21 Ultra 5G was available with various storage options and up to 16GB of RAM, allowing for extensive multitasking and storage of large files. The Z Flip4 typically comes with 8GB of RAM and multiple storage configurations, which is sufficient for most users' multitasking needs and app management.
• Overall System Responsiveness: Both devices deliver a responsive user experience. The S21 Ultra 5G handles everyday navigation and app loading with fluidity. The Z Flip4, benefiting from its newer processor, also provides a very snappy and smooth experience, with animations and transitions appearing seamless.

The display experience on the Galaxy S21 Ultra 5G and the Galaxy Z Flip4 differs significantly due to their fundamental design philosophies.

• Display Technology and Resolution: The S21 Ultra 5G features a large 6.8-inch Dynamic AMOLED 2X display with a high resolution of 3200 x 1440 pixels, offering exceptional clarity and detail. The Z Flip4's main display is a 6.7-inch foldable Dynamic AMOLED 2X panel with a resolution of 2640 x 1080 pixels. While both offer vibrant colors and deep blacks characteristic of AMOLED technology, the S21 Ultra 5G provides a sharper visual experience due to its higher pixel density.
• Refresh Rate and Brightness: Both devices feature adaptive 120Hz refresh rates, which contribute to smooth scrolling and fluid animations. The S21 Ultra 5G is known for its high peak brightness, making it highly visible even in bright outdoor conditions. The Z Flip4 also offers good brightness, suitable for outdoor use, though the S21 Ultra 5G may have a slight edge in extreme sunlight.
• Unique Display Features: The Z Flip4's primary differentiator is its foldable screen, allowing the device to become significantly more compact when closed. It also includes a 1.9-inch Super AMOLED cover display that shows notifications, widgets, and can act as a viewfinder for selfies. The S21 Ultra 5G offers a consistently large, uninterrupted viewing area, which is beneficial for media consumption and productivity.

The camera systems on the Galaxy S21 Ultra 5G and the Galaxy Z Flip4 are designed for different photographic strengths, reflecting their respective product categories.

• Rear Camera Systems: The S21 Ultra 5G boasts a versatile quad-camera setup, including a 108MP wide-angle lens, a 12MP ultra-wide lens, and two 10MP telephoto lenses (3x and 10x optical zoom). This configuration allows for exceptional detail, wide-angle shots, and significant optical zoom capabilities, including up to 100x digital 'Space Zoom'. The Z Flip4 features a dual-camera system with a 12MP wide-angle lens and a 12MP ultra-wide-angle lens. While it lacks a dedicated telephoto lens, its main sensor was improved over its predecessor, offering good performance in various lighting conditions.
• Photography Performance: The S21 Ultra 5G excels in capturing detailed images across a wide range of scenarios, particularly benefiting from its high-resolution main sensor and optical zoom for distant subjects. Its low-light performance is also strong. The Z Flip4 delivers good everyday photos with vibrant colors and improved low-light capabilities compared to previous Flip models.
• Video Recording and Selfies: Both devices are capable of high-quality video recording, with the S21 Ultra 5G supporting up to 8K resolution. The Z Flip4 can record 4K video at 60fps. For selfies, the S21 Ultra 5G has a 40MP front camera. The Z Flip4 has a 10MP front camera, but its foldable design allows users to utilize the higher-quality rear cameras for selfies, using the cover screen as a viewfinder.