Galaxy S25 Ultra Vs Galaxy Z Fold4

The Samsung Galaxy S25 Ultra, released in February 2025, represents the pinnacle of traditional smartphone design, offering a powerful and refined experience. In contrast, the Samsung Galaxy Z Fold4, launched in August 2022, provides a unique foldable form factor that transforms from a compact smartphone into a larger tablet-like display. Both devices operate on the Android platform, but their distinct designs cater to different user preferences, primarily differing in their physical form, display versatility, and overall hardware generation.

The longevity and durability aspects of these two devices present notable differences, largely due to their release timelines and design philosophies.

• Release Timeline and Software Support: The Galaxy S25 Ultra, being a newer device from early 2025, benefits from Samsung's extended software support policy, promising seven years of operating system and security updates, with support expected to continue until 2032. The Galaxy Z Fold4, released in mid-2022, was promised four Android OS upgrades and five years of security updates, meaning its major OS update cycle is nearing its conclusion by early 2026.
• Physical Durability: The S25 Ultra features a robust, traditional slab design with advanced protective glass, Gorilla Armor 2, on its display and an IP68 rating for dust and water resistance, offering comprehensive protection against environmental elements. The Z Fold4 utilizes Gorilla Glass Victus+ for its outer display and back panel, and a proprietary Ultra-Thin Glass for its foldable inner display, covered by two protective PET plastic layers. It carries an IPX8 water resistance rating, but lacks official dust resistance, which is a consideration for its folding mechanism.
• Expected Practical Lifespan: Users prioritizing the latest software features and extended security updates will find the S25 Ultra offers a longer practical lifespan in terms of software currency. The Z Fold4's unique folding design, while innovative, has also been associated with user concerns regarding the long-term durability of the inner screen and hinge mechanism, with some users reporting issues like screen protector peeling or hinge jamming after a year of use.

Performance capabilities vary significantly between these two devices, primarily influenced by their respective processor generations and design considerations.

• Processor Capabilities: The Galaxy S25 Ultra is equipped with a current-generation processor, the Qualcomm Snapdragon 8 Elite, which delivers substantial improvements in processing power and graphical performance. This allows for exceptionally smooth operation, rapid app loading, and efficient handling of demanding applications and high-fidelity games. The Galaxy Z Fold4 is powered by the Qualcomm Snapdragon 8+ Gen 1, a capable processor from 2022. While still offering strong performance for everyday tasks and multitasking, it does not match the raw speed and efficiency of the S25 Ultra's newer silicon.
• Multitasking and Responsiveness: Both devices offer ample RAM, typically 12GB or more, facilitating smooth multitasking. However, the S25 Ultra's more advanced processor provides a more responsive experience, particularly when switching between numerous heavy applications or engaging in intensive tasks. The Z Fold4's large foldable screen enhances its multitasking utility, allowing multiple apps to run side-by-side effectively, though the underlying processing power is of an older generation.
• Battery Behavior: The S25 Ultra houses a 5000 mAh battery, and with its efficient processor, it is designed to offer extended usage, with some tests indicating over 17 hours of battery life. The Z Fold4 features a 4400 mAh battery. While considered good for a foldable device, its battery life may require more frequent charging for heavy users compared to the S25 Ultra, especially when utilizing the larger inner display.

Both devices feature high-quality displays, but their form factors lead to distinct viewing experiences and practical applications.

• Display Technology and Clarity: Both the Galaxy S25 Ultra and the Galaxy Z Fold4 utilize Dynamic AMOLED 2X display technology, known for vibrant colors, deep blacks, and excellent contrast. The S25 Ultra features a single, expansive 6.9-inch display with a high resolution of 1440 x 3120 pixels, providing exceptional clarity and detail. The Z Fold4 offers a dual-screen setup: a 6.2-inch cover display and a larger 7.6-inch foldable inner display, both Dynamic AMOLED 2X. The inner display has a resolution of 2176 x 1812 pixels.
• Brightness and Refresh Rate: The S25 Ultra's display can reach a peak brightness of up to 2,600 nits, enhancing visibility in bright outdoor conditions and improving HDR content viewing. Both devices offer an adaptive refresh rate of up to 120Hz, ensuring smooth scrolling and fluid animations, with the ability to scale down to conserve power.
• Viewing Experience: The S25 Ultra provides a traditional, large, flat screen experience, ideal for media consumption and productivity without interruption. The Z Fold4's foldable design offers versatility; the cover screen functions as a regular smartphone, while the unfolded inner screen provides a tablet-like canvas, beneficial for multitasking, reading, and immersive media viewing. However, the inner display of the Z Fold4 still features a visible crease where it folds.

The camera systems on these devices reflect their different design priorities and release generations.

• Rear Camera System: The Galaxy S25 Ultra features a highly advanced quad-camera setup, including a 200MP main sensor, a 50MP ultra-wide lens, a 10MP telephoto lens with 3x optical zoom, and a 50MP periscope telephoto lens offering 5x optical zoom and up to 10x optical quality zoom. This configuration is designed for exceptional detail, versatility across various focal lengths, and advanced low-light performance. The Z Fold4 has a capable triple-camera system with a 50MP main sensor, a 12MP ultra-wide lens, and a 10MP telephoto lens with 3x optical zoom. While it delivers good results in most conditions, it does not offer the same level of specialized zoom capabilities or overall sensor advancements as the S25 Ultra.
• Low-Light and Video Performance: The S25 Ultra benefits from its larger sensors and advanced image processing, including AI enhancements, to deliver superior low-light photography and video recording. It supports 8K video recording at 30 frames per second. The Z Fold4 also offers improved low-light features and can record 8K video at 24 frames per second. However, the S25 Ultra generally provides more advanced video recording options and stabilization.
• Front Cameras and Audio: The S25 Ultra features a 12MP front-facing camera. The Z Fold4 has a 10MP camera on its cover display and a 4MP under-display camera on the inner screen, with the latter being primarily for video calls and offering lower quality. Both devices offer stereo speakers for an immersive audio experience.