Galaxy S21 5G • Unlocked vs iPhone 15 Plus • Unlocked

The Samsung Galaxy S21 5G, released in January 2021, and the iPhone 15 Plus, launched in September 2023, represent distinct approaches to smartphone design and functionality from two major manufacturers. While both devices offer robust performance and capable camera systems, they differ significantly in their operating systems, display technology, and overall user experience. The Galaxy S21 5G runs on Android, offering extensive customization, whereas the iPhone 15 Plus operates on iOS, known for its streamlined interface and ecosystem integration.

The longevity of a smartphone is influenced by its release date, software support, and physical durability. These factors determine how long a device remains functional and secure for daily use.

• Release Timeline and Software Support: The Galaxy S21 5G, released in January 2021, received its last major Android OS update to Android 15 in April 2025, with security updates expected to continue until at least 2026. In contrast, the iPhone 15 Plus, launched in September 2023, is guaranteed a minimum of five years of software updates from its release date, extending its support until at least September 2028, with security updates potentially lasting longer.
• Repairability: The Galaxy S21 5G has been noted for a repairability score of 7.5 out of 10, indicating a relatively straightforward process for disassembly and component replacement. The iPhone 15 Plus has a repairability score of 7 out of 10, an improvement over previous models, partly due to features like Repair Assistant that simplify part installation and calibration.
• Practical Lifespan: Users can expect the iPhone 15 Plus to receive major OS updates for a longer period, potentially offering a more extended practical lifespan for accessing new features and maintaining compatibility with the latest applications. The Galaxy S21 5G, while still receiving security patches, has concluded its major OS update cycle.

Evaluating the performance of these devices involves looking at their storage capabilities, battery endurance, and how smoothly they handle various applications and multitasking.

• Storage Options: The Galaxy S21 5G is available with 128GB or 256GB of internal storage. The iPhone 15 Plus offers more flexibility with 128GB, 256GB, and 512GB storage configurations. Neither device supports expandable storage via a microSD card.
• Battery Behavior: The Galaxy S21 5G features a 4000 mAh battery, with some users reporting that heavy usage may require more frequent charging. The iPhone 15 Plus is equipped with a 4383 mAh battery, and users generally report excellent battery life, often lasting a full day or more even with moderate to heavy use.
• System Responsiveness: The Galaxy S21 5G, powered by its contemporary processor, handles demanding applications and multitasking with smooth responsiveness. The iPhone 15 Plus, featuring a more recent generation processor, delivers a highly fluid user experience, ensuring demanding apps and games run without noticeable delays. Both devices offer sufficient RAM (8GB for S21 5G, 6GB for iPhone 15 Plus) to manage multiple applications simultaneously.

The visual experience on a smartphone is largely defined by its display, encompassing technology, resolution, brightness, and refresh rate.

• Display Technology and Clarity: The Galaxy S21 5G features a 6.2-inch Dynamic AMOLED 2X display, known for its vibrant colors and deep blacks. The iPhone 15 Plus comes with a larger 6.7-inch Super Retina XDR OLED display, also offering rich colors and excellent contrast. Both provide sharp visuals for everyday content consumption.
• Brightness and Refresh Rate: The Galaxy S21 5G boasts a 120Hz refresh rate, providing exceptionally smooth scrolling and fluid animations, along with a peak brightness of 1300 nits for good outdoor visibility. The iPhone 15 Plus has a standard 60Hz refresh rate, which is suitable for most tasks but less fluid than higher refresh rate displays. It offers a higher peak brightness of 2000 nits, making it highly visible even in bright sunlight.
• Screen Size and Viewing Experience: The Galaxy S21 5G's 6.2-inch display offers a compact viewing experience, suitable for one-handed use. The iPhone 15 Plus, with its 6.7-inch screen, provides a more expansive canvas for media consumption and productivity, though it results in a larger overall device size.

The camera systems on both devices are designed to capture high-quality photos and videos, though they employ different configurations and features.

• Rear Camera System: The Galaxy S21 5G features a versatile triple-camera setup on the rear, including a 12MP wide lens, a 12MP ultrawide lens, and a 64MP telephoto lens capable of 3x optical zoom. This configuration allows for a range of photographic styles, from expansive landscapes to detailed distant subjects. The iPhone 15 Plus utilizes a dual-camera system with a 48MP main sensor and a 12MP ultrawide sensor, offering improved detail and color accuracy.
• Photography Performance: The Galaxy S21 5G delivers good everyday photography with vivid saturation, and its telephoto lens provides clear zoomed-in shots. The iPhone 15 Plus excels in capturing detailed images with natural colors, performing well in various lighting conditions, including low light.
• Video Recording and Audio: Both devices are capable of recording high-quality video. The Galaxy S21 5G offers various video modes, and its microphone quality is generally clear for calls and recordings. The iPhone 15 Plus provides stable and detailed video capture, with good audio recording capabilities. Speaker output on both devices is suitable for media consumption, with the Galaxy S21 5G offering improved speaker assembly for richer sound.