Galaxy S25+ • Unlocked vs Galaxy Z Fold4 • Unlocked

The Samsung Galaxy S25 Plus, released in early 2025, represents a modern take on the traditional smartphone form factor, offering a powerful and refined experience. In contrast, the Samsung Galaxy Z Fold4, launched in mid-2022, provides a unique foldable design that transforms a standard smartphone into a tablet-like device. The primary distinctions between these two Android devices lie in their form factor, release timeline, and the resulting technological advancements, particularly in processing power and display innovation. Both offer a premium Android experience, but cater to different user preferences regarding design and functionality. For those considering a quality-assured refurbished option, both models are available, offering an eco-friendly alternative to new purchases.

The practical lifespan and software support differ significantly due to their respective release dates.

• Software Longevity: The Galaxy S25 Plus, being a 2025 release, benefits from Samsung's extended software support policy, promising seven years of major Android OS updates and security patches, extending its usability well into the next decade. The Galaxy Z Fold4, released in 2022, was promised four major Android OS upgrades (up to Android 16) and five years of security updates, with Android 15 having rolled out in May 2025.
• Physical Resilience: The Galaxy S25 Plus features Gorilla Glass Victus 2 on both its front and back, along with an Armor Aluminum frame and an IP68 rating for dust and water resistance. The Galaxy Z Fold4 utilizes Gorilla Glass Victus+ on its cover screen and an Ultra Thin Glass for its main foldable display, protected by an Armor Aluminum frame. It carries an IPX8 water resistance rating, meaning it can withstand submersion in water but lacks official dust resistance.
• Expected Practical Lifespan: Users prioritizing the longest possible software support and robust dust protection will find the S25 Plus more aligned with their needs. The Z Fold4, while durable for a foldable, has a shorter remaining software update window and a more intricate design that may present different long-term considerations.

Performance capabilities are a key differentiator, largely influenced by the generational gap in their internal components.

• Processing Power: The Galaxy S25 Plus is equipped with a current-generation processor, offering substantial improvements in overall speed, efficiency, and AI capabilities. This translates to smoother app loading, more fluid multitasking, and enhanced performance in demanding applications and games. The Galaxy Z Fold4 features a previous-generation processor, which still handles everyday tasks and most applications with ease, but may show limitations in comparison during intensive gaming or complex computational tasks.
• Multitasking and Responsiveness: Both devices come with 12GB of RAM, providing ample capacity for running multiple applications simultaneously without significant slowdowns. However, the newer processor in the S25 Plus contributes to a more responsive overall system, particularly when switching between heavy applications or processing large files.
• Battery Behavior: The Galaxy S25 Plus houses a 4900 mAh battery, designed to offer extended usage throughout the day, complemented by efficient power management from its advanced processor. The Galaxy Z Fold4 has a 4400 mAh battery, and while its processor is efficient, the dual-screen setup can impact overall battery endurance depending on usage patterns.

The display experience varies significantly due to the fundamental difference in form factor and display technology.

• Display Technology and Size: The Galaxy S25 Plus features a single 6.7-inch Dynamic AMOLED 2X flat display with a QHD+ resolution, offering a traditional smartphone viewing experience with vibrant colors and deep blacks. The Galaxy Z Fold4 offers a dual-screen setup: a 6.2-inch Dynamic AMOLED 2X cover screen for quick interactions and a larger 7.6-inch foldable Dynamic AMOLED 2X main screen that provides an expansive, tablet-like canvas when unfolded.
• Clarity and Brightness: Both devices offer high resolution and clarity, with the S25 Plus's QHD+ resolution on its single screen providing a sharp visual experience. The Z Fold4's main screen also boasts a high resolution suitable for detailed content. Both displays feature a 120Hz adaptive refresh rate for smooth scrolling and responsiveness. The S25 Plus can reach a peak brightness of 2600 nits, ensuring good visibility in bright outdoor conditions.
• Viewing Experience: The S25 Plus provides a consistent, high-quality viewing experience on a single, durable flat panel. The Z Fold4 offers versatility, allowing users to choose between a compact smartphone experience and an immersive, larger display for media consumption or productivity.

Both devices offer capable camera systems, but the newer S25 Plus benefits from more recent advancements in imaging technology and software.

• Rear Camera System: The Galaxy S25 Plus features a triple-camera setup with a 50MP main sensor, a 12MP ultrawide lens, and a 10MP telephoto lens with 3x optical zoom, all benefiting from optical image stabilization (OIS) on the main and telephoto lenses. The Galaxy Z Fold4 also has a triple-camera system, including a 50MP main sensor with OIS, a 12MP ultrawide, and a 10MP telephoto lens with 3x optical zoom and OIS.
• Photography Performance: The S25 Plus, with its newer processor and software optimizations, is expected to deliver improved image processing, particularly in challenging lighting conditions and for detail retention. Users report that the S25 Plus produces clean images with good detail and dynamic range. The Z Fold4 provides a versatile camera experience, with its main sensor sharing technology with other flagship devices from its release year, offering solid performance for everyday photography.
• Video and Front Cameras: Both devices are capable of recording video in up to 8K resolution, with the S25 Plus supporting 8K at 30 frames per second and the Z Fold4 at 24 frames per second. For selfies, the S25 Plus has a 12MP front camera. The Z Fold4 features a 10MP cover camera and a 4MP under-display camera on its main screen, which is less visible but offers a lower resolution.