Galaxy S21 5G • Unlocked vs iPhone 11 Pro Max • Unlocked

The Samsung Galaxy S21 5G, released in January 2021, and the Apple iPhone 11 Pro Max, launched in September 2019, represent different generations and operating systems within the smartphone landscape. While both offer premium experiences, the Galaxy S21 5G introduces newer connectivity and display technology, whereas the iPhone 11 Pro Max is recognized for its robust build and initial battery performance. This comparison will explore their core differences to help users determine which device aligns best with their needs.

When considering the long-term usability of these devices, their respective release timelines and software support policies are key factors.

• Release Timeline: The iPhone 11 Pro Max was released in September 2019, making it an older device compared to the Galaxy S21 5G, which launched in January 2021. This difference in release year directly impacts their remaining software support.
• Software Longevity: The Galaxy S21 series received its final major software update, Android 15-based One UI 7.0, in the first half of 2025, with security updates concluding around February 2026. The iPhone 11 Pro Max, having launched earlier, has also received several years of iOS updates, with support typically extending for 5-6 years from its release.
• Durability Features: Both devices feature robust builds. The iPhone 11 Pro Max includes Ceramic Shield protection and an IP68 rating for water and dust resistance. The Galaxy S21 5G also boasts an IP68 rating and Corning Gorilla Glass Victus on its display for enhanced durability.

Performance is a critical aspect for daily smartphone use, influencing everything from app responsiveness to gaming experiences. These two devices offer distinct approaches to processing power and memory management.

• Processing Capabilities: The Galaxy S21 5G is equipped with a more recent generation processor, which generally translates to faster app loading times, smoother multitasking, and more efficient handling of demanding applications and modern games. The iPhone 11 Pro Max, while still capable, features an older processor that provides reliable performance for everyday tasks and many intensive applications, though it may show its age with the most graphically demanding new titles.
• RAM and Storage: The Galaxy S21 5G typically comes with 8GB of RAM, supporting fluid multitasking across numerous applications. The iPhone 11 Pro Max generally features 4GB of RAM. Both offer various internal storage options, but the Galaxy S21 5G does not include a microSD card slot for expandable storage, a feature also absent on the iPhone 11 Pro Max.
• Battery Behavior: The iPhone 11 Pro Max was noted for its impressive battery life upon release, with users reporting it could last up to two days with moderate use. The Galaxy S21 5G, with a 4000 mAh battery, generally provides a full day of use for most users, though its 120Hz display can impact battery longevity with heavy use.

The visual experience is a primary interaction point for smartphones, and both devices offer high-quality displays with notable differences in technology and features.

• Display Technology and Size: The iPhone 11 Pro Max features a 6.5-inch Super Retina XDR OLED display, known for its deep blacks, vibrant colors, and high contrast ratio. The Galaxy S21 5G has a 6.2-inch Dynamic AMOLED 2X display, which also delivers rich colors and excellent contrast.
• Resolution and Brightness: The iPhone 11 Pro Max offers a resolution of 2688 x 1242 pixels at 458 ppi, with a peak brightness of 1200 nits for HDR content. The Galaxy S21 5G provides a 2400 x 1080 pixel resolution at 421 ppi, with a peak brightness of 1300 nits.
• Refresh Rate: A significant differentiator is the refresh rate; the Galaxy S21 5G features an adaptive 120Hz refresh rate, providing a smoother scrolling and viewing experience, while the iPhone 11 Pro Max has a standard 60Hz refresh rate.

Both smartphones offer advanced camera systems designed to capture high-quality photos and videos, though with different sensor configurations and software processing.

• Rear Camera System: The iPhone 11 Pro Max features a triple 12MP camera system, including Ultra Wide, Wide, and Telephoto lenses, known for consistent color science across all lenses and strong low-light performance with Night mode. The Galaxy S21 5G also has a triple-lens setup, comprising a 12MP main, 12MP ultrawide, and a 64MP telephoto lens, offering 3x hybrid optical zoom and up to 30x digital zoom.
• Photography Performance: The iPhone 11 Pro Max excels in producing realistic colors and has a highly regarded Night mode that automatically activates in low-light conditions. The Galaxy S21 5G provides sharp photos with good dynamic range, and its camera software includes features like Director's View for video and improved portrait modes. Some users have noted that the S21's camera can sometimes over-process images or boost colors.
• Video Recording: Both devices are capable of recording 4K video at 60 frames per second. The Galaxy S21 5G can also record 8K video at 30fps. The iPhone 11 Pro Max is praised for its video stabilization and seamless switching between lenses during recording.