Galaxy S21+ 5G vs Galaxy Z Flip6

The Samsung Galaxy S21 Plus 5G, released in January 2021, and the Samsung Galaxy Z Flip6, launched in July 2024, represent distinct approaches to smartphone design and functionality within the Android ecosystem. While the S21 Plus offers a traditional, unibody form factor, the Z Flip6 introduces a clamshell foldable design, prioritizing portability and a unique user experience. These differences extend to their internal hardware, software longevity, and specific features, catering to varying user preferences. Both devices offer a quality-assured refurbished option, providing an eco-friendly alternative for consumers.

The expected practical lifespan and software support differ significantly between these two devices due to their respective release timelines and Samsung's evolving update policies.

• Release Timeline and Age: The Galaxy S21 Plus 5G was released in January 2021, making it an older device compared to the Galaxy Z Flip6, which launched in July 2024. This age difference directly impacts their remaining software support.
• OS Support Duration: The Galaxy S21 Plus 5G launched with Android 11 and received four major Android OS updates, concluding with Android 15. It also received five years of security updates. In contrast, the Galaxy Z Flip6, launching with Android 14, is promised an extended seven generations of Android OS upgrades (up to Android 21) and seven years of security updates, extending its usable life significantly further into the future.
• Repairability: The Galaxy Z Flip6 has shown improvements in repairability compared to its predecessors, with a reported overall repairability score of 8/10, partly due to easier screen replacement. Information on the specific repairability score for the S21 Plus 5G is less prominent, but traditional slab phones generally offer a more straightforward repair process for common components.

Both devices are equipped with powerful processors for their respective generations, but the Z Flip6 benefits from more recent advancements in mobile computing.

• Processor Capabilities: The Galaxy S21 Plus 5G is powered by a processor that, at its release, handled demanding applications and multitasking efficiently. The Galaxy Z Flip6 features a newer generation processor, which provides a notable boost in overall performance, leading to smoother operation for intensive tasks, faster app loading, and enhanced capabilities for AI-driven features.
• RAM and Storage: The S21 Plus 5G typically comes with 8GB of RAM and storage options of 128GB or 256GB. The Galaxy Z Flip6 offers 12GB of RAM, with storage options of 256GB or 512GB, providing more headroom for multitasking and larger storage capacities for media and applications.
• Battery Behavior: The Galaxy S21 Plus 5G features a 4800 mAh battery, generally providing a full day of moderate to heavy use. The Galaxy Z Flip6 has a 4000 mAh battery. While smaller, its newer, more efficient processor and software optimizations contribute to optimized power consumption, though heavy usage of the main foldable display may require more frequent charging.

The display experience is a primary differentiator, with the Z Flip6 offering a unique foldable form factor and an additional external screen.

• Display Technology and Size: The Galaxy S21 Plus 5G features a 6.7-inch flat Dynamic AMOLED 2X display. The Galaxy Z Flip6 also has a 6.7-inch main foldable Dynamic AMOLED 2X display, but its ability to fold in half offers a compact form factor when closed. Additionally, the Z Flip6 includes a 3.4-inch Super AMOLED cover screen for quick interactions without unfolding the device.
• Resolution and Clarity: Both devices offer a Full HD+ resolution on their main displays, providing crisp and clear visuals for everyday viewing. The S21 Plus has a resolution of 1080 x 2400 pixels, while the Z Flip6's main display is 1080 x 2640 pixels, resulting in a similar pixel density. The Z Flip6's cover screen has a resolution of 720 x 748 pixels, suitable for its smaller size and quick glance functions.
• Brightness and Refresh Rate: Both phones feature an adaptive 120Hz refresh rate on their main displays, ensuring smooth scrolling and responsive interactions. The Galaxy Z Flip6's main display offers a higher peak brightness of 2600 nits, which can improve visibility in bright outdoor conditions compared to the S21 Plus 5G's display.

Both smartphones offer capable camera systems, but the Z Flip6 introduces a higher resolution main sensor and enhanced software features.

• Rear Camera System: The Galaxy S21 Plus 5G features a versatile triple-camera setup with a 12MP wide-angle lens, a 64MP telephoto lens with 3x hybrid optical zoom, and a 12MP ultrawide lens. The Galaxy Z Flip6 has a dual-camera system, upgrading its main sensor to 50MP with optical image stabilization (OIS) and retaining a 12MP ultrawide lens. The Z Flip6's larger main sensor can capture more detail and perform better in various lighting conditions.
• Low-Light and Everyday Photography: The S21 Plus 5G delivers good results in well-lit environments and includes a dedicated Night Mode. The Z Flip6's upgraded 50MP main camera, combined with improved image processing and AI features, offers enhanced low-light performance and more detailed everyday photos.
• Video Recording and Front Camera: Both devices support 4K video recording at 30/60fps, with the S21 Plus 5G also capable of 8K video at 24fps. Both feature a 10MP front-facing camera for selfies and video calls. The Z Flip6's foldable design allows for unique camera angles and hands-free selfies using the main rear cameras and cover screen.