Galaxy S21 5G vs iPhone 15

The Samsung Galaxy S21 5G (2021) and the iPhone 15 (2023) are both flagship smartphones from their respective manufacturers, offering distinct user experiences. While the Galaxy S21 5G runs on the Android operating system with Samsung's One UI, the iPhone 15 operates on Apple's iOS platform. The iPhone 15, being a newer release, incorporates more recent advancements in camera technology and processing capabilities, alongside a shift to a universal charging port.

The practical lifespan of a smartphone is influenced by its release timeline, software support, and physical resilience. These two devices, while both robust, offer different expectations in terms of long-term usability.

• Release Timeline: The Galaxy S21 5G was released in January 2021, while the iPhone 15 launched in September 2023. This difference in release dates means the iPhone 15 benefits from a longer period of anticipated software updates and security patches from its manufacturer.
• Software Longevity: Samsung typically provides several years of major Android OS updates and security updates for its flagship devices. The iPhone 15, running iOS, is expected to receive software support for an extended period, generally five to six years from its release, potentially offering a longer functional lifespan for users who prioritize the latest software features and security.
• Physical Durability: Both devices feature robust construction. The Galaxy S21 5G is protected by Corning Gorilla Glass Victus on its display, while the iPhone 15 utilizes Apple's Ceramic Shield front cover, which is designed for enhanced drop performance. Both models also carry an IP68 rating for dust and water resistance, allowing submersion in up to 6 meters of water for up to 30 minutes.

Performance in daily use is a key differentiator, with both devices offering smooth operation for various tasks, though their underlying architectures differ.

• System Responsiveness: The iPhone 15, equipped with a more recent processor, delivers fluid performance for everyday applications, demanding games, and intensive multitasking. Users generally report a highly responsive interface and quick app loading times. The Galaxy S21 5G, while still capable, provides a strong performance for its generation, handling most applications and multitasking without significant delays.
• Battery Behavior: The iPhone 15 typically offers a full day of use for many users, with up to 20 hours of video playback on a single charge. Some users have noted consistent all-day battery performance. The Galaxy S21 5G features a 4000mAh battery, which generally provides sufficient power for a full day of moderate use.
• Storage Options: The iPhone 15 is available with 128GB, 256GB, or 512GB of internal storage. The Galaxy S21 5G offers 128GB or 256GB storage configurations. Neither device supports expandable storage via a microSD card.

The visual experience on both smartphones is vibrant and clear, though there are differences in display technology and refresh rates that impact perceived smoothness.

• Display Technology and Clarity: The iPhone 15 features a 6.1-inch Super Retina XDR OLED display, offering deep blacks, high contrast, and vibrant colors with a resolution of 2556 x 1179 pixels, resulting in a pixel density of approximately 460 PPI. The Galaxy S21 5G sports a 6.2-inch Dynamic AMOLED 2X display with a resolution of 2400 x 1080 pixels (FHD+), providing a pixel density of about 421 PPI. Both displays deliver sharp images and text.
• Brightness and Outdoor Visibility: The iPhone 15 boasts impressive brightness levels, reaching up to 1000 nits typical brightness, 1600 nits peak HDR brightness, and a peak outdoor brightness of 2000 nits, ensuring excellent visibility even in direct sunlight. The Galaxy S21 5G offers a peak brightness of 1300 nits, which is also suitable for outdoor viewing.
• Refresh Rate: A notable difference lies in the refresh rate. The Galaxy S21 5G features an adaptive refresh rate that can dynamically adjust from 48Hz to 120Hz, providing a smoother scrolling experience and more fluid animations. The iPhone 15 maintains a standard 60Hz refresh rate.

Both devices offer capable camera systems designed to capture high-quality photos and videos, with the iPhone 15 introducing a higher-resolution main sensor and the Galaxy S21 5G providing a versatile telephoto lens.

• Main Camera Capabilities: The iPhone 15 features an advanced dual-camera system with a 48MP main sensor (f/1.6 aperture) that produces detailed 24MP photos by default, and includes sensor-shift optical image stabilization. It also offers a 2x telephoto option enabled by the quad-pixel sensor. The Galaxy S21 5G comes with a triple-lens rear camera setup, including a 12MP wide-angle lens (f/1.8, OIS) and a dedicated 64MP telephoto lens with 3x hybrid optical zoom.
• Low-Light and Everyday Photography: The iPhone 15 excels in capturing accurate colors and details across various lighting conditions, with improved low-light performance and advanced computational photography features like Photonic Engine and Smart HDR 5. The Galaxy S21 5G also delivers strong performance in everyday photography, with improved focus and subject tracking, and a capable night mode.
• Video Recording and Additional Features: The iPhone 15 supports 4K Dolby Vision HDR video recording at up to 60 frames per second and offers Cinematic mode for a shallow depth of field effect. The Galaxy S21 5G is capable of recording video in up to 8K resolution and includes features like Director's View, which allows switching between cameras while filming. Both devices feature capable ultrawide cameras and front-facing cameras for selfies and video calls.