Galaxy A51 vs iPhone X

The Samsung Galaxy A51, released in late 2019 and early 2020, and the Apple iPhone X, launched in late 2017, represent different approaches to smartphone design and functionality from their respective manufacturers. While the Galaxy A51 operates on Android, offering a customizable experience, the iPhone X runs on Apple's iOS, known for its integrated ecosystem. Key differentiators include their display technologies, camera configurations, and biometric security methods, catering to varied user preferences.

Evaluating the practical lifespan of these devices involves considering their release timelines, software support, and repairability.

• Release and Age: The iPhone X was released in November 2017, making it an older model compared to the Galaxy A51, which debuted in December 2019 and globally in January 2020. This age difference impacts their current and future software support.
• Software Longevity: The iPhone X received major iOS updates up to iOS 16, with no further major OS upgrades expected. Security updates may continue for a limited period. The Galaxy A51, launched with Android 10, received updates up to Android 13 (One UI 5.1), but Samsung ended its software support in early 2024, meaning no more security patches or Android versions. Users prioritizing the latest software features will find both devices have reached the end of their major update cycles.
• Repairability: The iPhone X generally scores around 6 to 7.5 out of 10 for repairability, with its display and battery being relatively accessible for replacement. However, its glass back is noted as difficult and expensive to replace if damaged. The Galaxy A51 has a repairability score of approximately 6 to 6.5 out of 10. While its battery and screen are replaceable, the presence of small parts and adhesive can make repairs challenging, and specialized tools might be necessary.

The performance of a smartphone is crucial for daily operations, from launching applications to managing multiple tasks.

• Processor Capabilities: The iPhone X, powered by its A11 Bionic chip, offered robust performance at its release, handling demanding applications and multitasking smoothly. Even in 2025, it can manage about 90% of tasks without significant issues, though heavy graphics-intensive games may show signs of age with occasional frame drops and heating. The Galaxy A51 features an Exynos 9611 processor, which was considered adequate for everyday use at its launch. However, it has been noted for underwhelming performance and occasional lag in day-to-day use, especially with more demanding tasks.
• System Responsiveness and Multitasking: The iPhone X provides a consistently smooth and stable user experience, even several years after its release. Its optimized software and hardware integration contribute to efficient app loading and navigation. The Galaxy A51, while capable of handling social media and streaming, may exhibit slight lag within its user interface and longer loading times for some applications. Switching between apps is generally fluid, particularly with higher RAM configurations.
• Storage and RAM: The iPhone X comes with 3GB of RAM and storage options of 64GB or 256GB. The Galaxy A51 offers more varied RAM options, including 4GB, 6GB, or 8GB, and storage choices of 64GB, 128GB, or 256GB, with the added benefit of expandable storage via a microSD card.
• Battery Behavior: The iPhone X, with its 2716 mAh battery, offers acceptable battery life, though heavy users might find themselves needing to charge it more than once a day. The Galaxy A51, equipped with a larger 4000 mAh battery, is generally praised for its good to long-lasting battery life, often capable of getting users through a full day of use.

The display is a primary interface for user interaction, and both devices offer distinct viewing experiences.

• Display Technology and Clarity: The iPhone X features a 5.8-inch Super Retina OLED display with a resolution of 1125x2436 pixels, resulting in a pixel density of 458 ppi. This OLED technology delivers deep blacks, vibrant colors, and excellent contrast. The Galaxy A51 boasts a larger 6.5-inch Super AMOLED Infinity-O display with a 1080x2400 pixel resolution and a pixel density of approximately 405 ppi. Its Super AMOLED panel also provides bright and punchy colors.
• Brightness and Refresh Rate: Both devices feature a standard 60Hz refresh rate, which provides a smooth experience for typical smartphone use. The iPhone X's OLED display supports HDR10 content and True Tone technology, which adjusts the white balance to ambient light. Its peak brightness is around 625 nits, which can be challenging under direct sunlight compared to newer models. The Galaxy A51's display is also noted for good brightness and viewing angles, performing well under harsh sunlight.
• Screen Size and Viewing Experience: The Galaxy A51 offers a larger screen, which can be more immersive for media consumption and browsing. Its punch-hole design minimizes interruptions to the display. The iPhone X, with its slightly smaller screen and characteristic notch, still provides an expansive viewing area due to its edge-to-edge design.

Camera capabilities are a significant factor for many users, and these phones offer different photographic strengths.

• Camera System Configuration: The iPhone X features a dual 12MP rear camera system, comprising a wide-angle lens (f/1.8) and a telephoto lens (f/2.4), both with optical image stabilization. It also has a 7MP TrueDepth front camera. The Galaxy A51 comes with a more versatile quad-camera setup on the rear: a 48MP main sensor, a 12MP ultrawide, a 5MP macro, and a 5MP depth sensor. Its front camera is a 32MP sensor.
• Photography Performance: The iPhone X is known for its strong photo performance, particularly in good lighting conditions, and offers features like Portrait Mode for both front and rear cameras. It can struggle in low-light environments due to the absence of a dedicated night mode. The Galaxy A51's main 48MP camera captures detailed images with good sharpness and saturated colors in daylight. Its ultrawide lens can show minor edge distortion, and the macro lens is considered average. The 32MP front camera is capable of producing sharp selfies.
• Video Recording and Audio: Both devices are capable of recording 4K video. The iPhone X can record 4K video at 24, 30, or 60 frames per second, and 1080p video at up to 240 frames per second. Its built-in stereo speakers provide good sound quality and volume. The Galaxy A51's main camera can also record 4K video. It includes a 3.5mm headphone jack, offering a traditional audio output option.