Galaxy S21+ 5G vs iPhone 16 Pro Max

The Samsung Galaxy S21 Plus 5G, released in early 2021, and the Apple iPhone 16 Pro Max, launched in late 2024, represent different generations of flagship smartphones. While both devices offer premium experiences, the iPhone 16 Pro Max benefits from several years of technological advancements, particularly in processing power, camera capabilities, and display technology. The fundamental difference in their operating systems, Android for the Galaxy and iOS for the iPhone, also shapes their user experience and ecosystem integration.

The practical lifespan of a smartphone is influenced by its build quality, software support, and repairability. These two devices offer different timelines and approaches to longevity.

• Software Longevity: The Galaxy S21 Plus 5G launched with Android 11 and has received updates up to Android 14, with major OS support typically lasting around three to four years from release. The iPhone 16 Pro Max, running on iOS 18, is expected to receive software updates for a longer duration, typically five to six years or more, extending its functional life further into the future. [1, 2, 4, 7, 10, 11, 13, 23, 36]
• Physical Durability: Both devices feature robust construction. The Galaxy S21 Plus 5G uses Gorilla Glass Victus on its front and back, paired with an aluminum frame, and carries an IP68 rating for dust and water resistance. The iPhone 16 Pro Max features a titanium frame, a Ceramic Shield front cover, and a textured matte glass back, also with an IP68 rating, offering enhanced resistance to drops and submersion. [2, 11, 23, 25, 33, 35, 36]
• Repairability: The iPhone 16 Pro Max has shown improved repairability with an iFixit score of 7 out of 10, featuring a dual-entry design that allows easier access to internal components like the battery. While the Galaxy S21 Plus 5G is generally considered moderately repairable for its generation, specific modularity improvements seen in newer iPhones contribute to a more straightforward repair process. [22, 24, 34, 42]

Performance is a key area where newer devices often show significant gains, impacting everything from app responsiveness to demanding tasks.

• Processing Power: The iPhone 16 Pro Max, with its advanced A18 Pro chip, delivers substantial performance improvements, handling demanding applications, complex multitasking, and graphics-intensive games with ease. The Galaxy S21 Plus 5G, powered by either the Snapdragon 888 or Exynos 2100, provided strong performance for its time, capably managing everyday tasks and most applications, though it may show its age with the most intensive modern software. [2, 4, 7, 10, 11, 13, 14, 23, 35, 36]
• Multitasking and Storage: Both phones offer ample RAM for smooth multitasking, with the Galaxy S21 Plus 5G typically featuring 8GB of RAM and the iPhone 16 Pro Max also equipped with 8GB of RAM. Storage options for the Galaxy S21 Plus 5G include 128GB and 256GB, while the iPhone 16 Pro Max starts at 256GB and extends to 1TB, providing more headroom for large files and applications. [2, 7, 11, 12, 14, 23, 25, 33, 35, 44]
• Real-world Responsiveness: Users of the iPhone 16 Pro Max report a consistently fluid and responsive experience across the operating system and applications. The Galaxy S21 Plus 5G also offers a generally smooth experience, though some users have noted occasional sluggishness or heating during prolonged heavy use, particularly with graphically demanding games or video recording. [45, 49]

The display is a primary interface for smartphone interaction, and both devices offer high-quality viewing experiences with distinct characteristics.

• Display Technology and Clarity: Both smartphones feature OLED displays, known for deep blacks and vibrant colors. The Galaxy S21 Plus 5G has a 6.7-inch Dynamic AMOLED 2X display with a 1080 x 2400 pixel resolution, resulting in a pixel density of approximately 394 ppi. The iPhone 16 Pro Max boasts a larger 6.9-inch Super Retina XDR OLED display with a higher resolution of 2868 x 1320 pixels, yielding a sharper 460 ppi. [2, 3, 7, 8, 11, 19, 23, 25, 32, 33, 35, 36]
• Brightness and Refresh Rate: The Galaxy S21 Plus 5G offers an adaptive 120Hz refresh rate for smooth scrolling and animations, along with HDR10+ support. The iPhone 16 Pro Max also features ProMotion technology with adaptive refresh rates up to 120Hz, and it achieves higher peak brightness levels, reaching up to 2000 nits for outdoor visibility and HDR content, compared to the Galaxy S21 Plus 5G's peak brightness of around 1300 nits. [2, 3, 11, 19, 23, 33, 35, 36]
• Viewing Experience: Users of the iPhone 16 Pro Max frequently praise its expansive and vibrant display, noting that content consumption is particularly enjoyable due to its size and clarity. The Galaxy S21 Plus 5G also provides a strong visual experience, with its large screen and adaptive refresh rate contributing to a fluid interface. [17, 26]

Both devices are equipped with versatile camera systems designed to capture a wide range of photos and videos, though with different strengths and generational advancements.

• Rear Camera Systems: The Galaxy S21 Plus 5G features a triple camera setup with a 12MP wide, 64MP telephoto (offering 1.1x optical and 3x hybrid zoom), and a 12MP ultrawide lens. The iPhone 16 Pro Max also has a triple camera system, including a 48MP main sensor, a 48MP ultrawide lens, and a 12MP telephoto lens with 5x optical zoom. The iPhone's newer sensors and computational photography enhancements contribute to improved detail and low-light performance. [2, 6, 9, 11, 14, 18, 21, 23, 28, 32, 33, 36, 38, 39]
• Photography Performance: The Galaxy S21 Plus 5G produces photos with vibrant colors and good detail, and its low-light performance was impressive for its release year. However, the iPhone 16 Pro Max offers more advanced image processing, resulting in sharper images, better-balanced highlights, and more detail in shadows, particularly in challenging lighting conditions. Its upgraded ultrawide camera also provides more detail for wide landscapes and macro shots. [6, 9, 15, 18, 21, 28, 37, 38, 39]
• Video Capabilities: The Galaxy S21 Plus 5G supports 8K video recording at 24fps and 4K at 30/60fps. The iPhone 16 Pro Max excels in video recording, offering 4K Dolby Vision video at up to 120fps, providing excellent detail and smooth motion, which is particularly beneficial for slow-motion effects and professional-grade content creation. [2, 6, 9, 11, 14, 21, 23, 33, 35, 37, 39]