Galaxy S25 Ultra • Unlocked vs Galaxy Z Flip4 • Unlocked

The Samsung Galaxy S25 Ultra, a flagship smartphone released in early 2025, represents the pinnacle of traditional smartphone design and technology. In contrast, the Samsung Galaxy Z Flip4, launched in August 2022, offers a compact, foldable form factor that prioritizes portability and a unique user experience. These two devices cater to different preferences, with the S25 Ultra focusing on expansive capabilities and the Z Flip4 on innovative design and convenience.

The expected lifespan and software support differ between these two Samsung devices, reflecting their respective release timelines and product categories.

• Release Timeline: The Galaxy S25 Ultra was announced in January 2025 and became available in February 2025, making it a more recent device. The Galaxy Z Flip4 was released in August 2022. This age difference impacts their remaining support cycles.
• Software Longevity: The Galaxy S25 Ultra is expected to receive seven years of Android OS upgrades and security updates, ensuring long-term software relevance. The Galaxy Z Flip4 was promised four major Android OS updates and up to five years of security updates from its release, meaning its support will conclude around 2027.
• Durability Considerations: The Galaxy S25 Ultra features a robust, traditional slab design, often incorporating strong glass and a titanium frame, contributing to its overall resilience. The Galaxy Z Flip4, while featuring an aluminum frame and IPX8 water resistance, has a foldable display that requires careful handling and lacks dust resistance, which can be a factor in its practical lifespan.

Performance capabilities are a key differentiator, with the newer Galaxy S25 Ultra offering more advanced processing power compared to the Galaxy Z Flip4.

• Processing Power: The Galaxy S25 Ultra is equipped with a current-generation processor, designed to handle demanding applications, intensive multitasking, and advanced gaming with high efficiency and responsiveness. The Galaxy Z Flip4 utilizes a processor from 2022, which provides smooth performance for everyday tasks, app usage, and moderate gaming, but may show limitations with the most resource-intensive applications over time.
• Multitasking and Storage: The S25 Ultra typically comes with a larger amount of RAM, often 12GB or 16GB, facilitating seamless transitions between numerous open applications and heavy multitasking. Storage options range from 256GB up to 1TB, providing ample space for extensive media libraries and applications. The Galaxy Z Flip4 generally features 8GB of RAM, which is sufficient for most users' multitasking needs, and offers storage configurations up to 512GB.
• Battery Behavior: The Galaxy S25 Ultra houses a larger 5000 mAh battery, and combined with its efficient processor and display technology, it is expected to deliver extended usage times, potentially lasting beyond a full day for many users. The Galaxy Z Flip4 has a 3700 mAh battery, which typically provides a full day of use for average users, though heavy usage may necessitate more frequent charging.

The display experience varies significantly due to the form factors and display technologies employed by each device.

• Display Technology and Size: The Galaxy S25 Ultra features a large 6.9-inch Dynamic AMOLED 2X display, offering an expansive viewing area with high resolution and vibrant colors. The Galaxy Z Flip4 has a 6.7-inch foldable Dynamic AMOLED 2X main display when unfolded, providing a similar screen size to a traditional smartphone, along with a smaller 1.9-inch Super AMOLED cover screen for quick interactions when folded.
• Clarity and Smoothness: Both devices offer a 120Hz adaptive refresh rate on their main displays, ensuring smooth scrolling and responsive interactions. The S25 Ultra's higher resolution contributes to exceptional clarity and detail. The Z Flip4's main display also provides good clarity, though the crease in the foldable screen is noticeable, even if barely felt during use.
• Brightness and Outdoor Visibility: The Galaxy S25 Ultra's display is capable of reaching high peak brightness levels, making it highly visible even in bright outdoor conditions, and includes an anti-reflective coating for improved viewing. The Galaxy Z Flip4's display offers good brightness for most environments, but the S25 Ultra generally provides a more comfortable viewing experience under direct sunlight.

Camera capabilities are a major distinguishing factor, with the Galaxy S25 Ultra offering a more comprehensive and advanced system.

• Rear Camera Systems: The Galaxy S25 Ultra boasts a versatile quad-camera setup, including a high-resolution 200MP main sensor, a 50MP ultrawide lens, a 50MP telephoto lens with 5x optical zoom, and a 10MP telephoto lens with 3x optical zoom, providing extensive photographic flexibility and detail. The Galaxy Z Flip4 features a dual-camera system with a 12MP main sensor and a 12MP ultrawide lens, which performs well for everyday photography but lacks a dedicated telephoto lens for optical zoom.
• Low-Light and Video Performance: The S25 Ultra excels in low-light conditions due to its larger sensors, advanced AI-enhanced Nightography features, and improved ProVisual Engine, delivering clear and vibrant images. It also supports 8K video recording at 30 frames per second and 10-bit HDR video capture for professional-grade footage. The Z Flip4 offers improved low-light performance compared to its predecessor and captures good quality video, but it does not match the S25 Ultra's advanced capabilities or resolution.
• Unique Camera Features: The Galaxy Z Flip4's foldable design enables unique shooting angles and hands-free photography using its FlexCam feature, allowing users to utilize the main cameras for high-quality selfies via the cover screen. The S25 Ultra's extensive zoom capabilities, including 100x Space Zoom, allow for capturing distant subjects with clarity.