Galaxy Z Fold4 vs Galaxy Z Fold6

The Samsung Galaxy Z Fold4, released in August 2022, and the Samsung Galaxy Z Fold6, launched in July 2024, represent two generations of Samsung's innovative foldable smartphone line. Both devices offer a unique design that transforms a traditional smartphone into a larger, tablet-like display, running on the Android operating system with Samsung's One UI overlay. The Z Fold6 introduces refinements in design, enhanced durability, and updated internal components, building upon the foundation established by its predecessor.

When considering the longevity of these foldable devices, several factors come into play, including software support and physical resilience. The Z Fold6 offers a significantly extended support period compared to the Z Fold4.

• Software Support: The Galaxy Z Fold4 was launched with Android 12L and was promised four major Android OS updates, extending its support up to Android 16, along with five years of security updates until 2027. In contrast, the newer Galaxy Z Fold6 ships with Android 14 and benefits from an extended commitment of seven years of Android OS upgrades and seven years of security updates, offering a longer period of official support until 2031.
• Physical Durability: The Galaxy Z Fold4 features an Armor Aluminum frame and IPX8 water resistance, meaning it can withstand submersion in water but lacks official dust resistance. User reports for the Z Fold4 have sometimes indicated concerns regarding the inner screen and hinge over extended use, with issues like screen delamination or hinge malfunctions appearing around 17 months of use. The Galaxy Z Fold6 maintains the Armor Aluminum frame but improves upon its predecessor with an IP48 rating, adding a degree of dust resistance alongside water resistance. Its hinge is rated for 200,000 folds, suggesting a robust design for daily use, and early reports indicate a significant drop in micro crack rates and screen protector peeling compared to earlier Fold models.
• Practical Lifespan: Users of the Z Fold4 have reported varying experiences, with some encountering issues with the inner screen protector peeling or hinge malfunctions after about a year or two. The Z Fold6, being a newer model, incorporates design and material enhancements aimed at improving long-term reliability, with early user feedback suggesting a solid build and improved resistance to dust and hinge-related problems.

Both devices are equipped with capable hardware for daily tasks, but the Z Fold6 benefits from more recent advancements in processing power and storage technology.

• Processor Capabilities: The Galaxy Z Fold4 is powered by a processor that handles demanding applications and multitasking smoothly, providing a responsive user experience for most tasks. The Galaxy Z Fold6 features a newer generation processor specifically tuned for Galaxy devices, offering enhanced performance for intensive applications, advanced AI features, and more efficient power management.
• Multitasking and Responsiveness: Both devices come with 12GB of RAM, allowing for effective multitasking with multiple applications open simultaneously on their large internal displays. The Z Fold6 benefits from faster internal storage technology (UFS 4.0), which can contribute to quicker app loading times and overall system responsiveness compared to the Z Fold4's UFS 3.1 storage.
• Battery Behavior: Both the Galaxy Z Fold4 and Z Fold6 are equipped with a 4400mAh battery. While the capacity is the same, the Z Fold6's more efficient processor and software optimizations may lead to slightly improved battery endurance in typical use cases. Some Z Fold6 users have reported initial battery drain issues, which can often be resolved as the device learns usage patterns and through software updates.

Both foldable phones offer impressive display technology, but the Z Fold6 brings notable improvements in brightness and cover screen usability.

• Display Technology and Clarity: Both the Galaxy Z Fold4 and Z Fold6 feature a 7.6-inch foldable Dynamic AMOLED 2X main display and an external cover screen. These displays provide vibrant colors and deep blacks, with a 120Hz adaptive refresh rate for smooth scrolling and responsiveness. The Z Fold6's inner display also features proper corners, a subtle design refinement.
• Brightness and Outdoor Visibility: The Galaxy Z Fold4's main display can reach a peak brightness of up to 1200 nits. The Galaxy Z Fold6 significantly improves upon this, with both its main and cover screens capable of reaching up to 2600 nits of peak brightness, offering superior visibility in bright outdoor conditions.
• Screen Size and Aspect Ratio: The Z Fold4 has a 6.2-inch cover screen with thicker bezels and a narrower aspect ratio. The Z Fold6 features a slightly larger 6.3-inch cover display with thinner bezels and a wider, more traditional aspect ratio, making it more comfortable for one-handed typing and general use when folded.

While both devices offer versatile camera systems, the Z Fold6 provides minor refinements in image processing, though the core hardware remains largely consistent.

• Camera System Capabilities: Both the Galaxy Z Fold4 and Z Fold6 feature a triple rear camera system, typically consisting of a 50-megapixel wide-angle main lens, a 12-megapixel ultra-wide lens, and a 10-megapixel telephoto lens with 3x optical zoom. They also include a 10-megapixel selfie camera on the cover screen and a 4-megapixel under-display camera on the main foldable screen.
• Photography Performance: The main cameras of both devices are comparable, delivering good results in well-lit conditions. The Z Fold6 may offer slight improvements in color processing and detail capture due to software optimizations and the newer processor. However, user sentiment suggests that neither device's camera system matches the performance of Samsung's dedicated flagship slab phones, particularly in low-light scenarios or for advanced photography needs.
• Video Recording Quality: Both models support high-resolution video recording, offering features suitable for capturing everyday moments. Microphone quality for calls and recording is generally clear on both devices. Speaker output provides a decent media consumption experience, leveraging the large internal display.