iPhone 12 vs iPhone X

The iPhone 12, released in October 2020, and the iPhone X, launched in November 2017, represent different generations of Apple's smartphone evolution. While both devices feature an all-screen design and Face ID for secure authentication, the iPhone 12 introduces a more advanced processor, enhanced camera capabilities, and next-generation connectivity. Both run on Apple's iOS operating system, offering a consistent user experience, though the iPhone 12 benefits from a longer period of software support.

The practical lifespan of a smartphone is often determined by its software support and physical durability. These two models, separated by three years, show notable differences in these aspects.

• Software Longevity: The iPhone X, released in 2017, supports iOS up to version 16.7.15, which was released in March 2026, but does not support iOS 17 or newer versions. In contrast, the iPhone 12, launched in 2020, shipped with iOS 14 and is compatible with iOS 26, released in March 2026, indicating a significantly longer future for software updates and access to the latest features. [1, 32]
• Physical Durability: Both devices feature glass front and back panels, making them susceptible to damage from drops. The iPhone X has an IP67 rating for water and dust resistance, meaning it can withstand immersion in up to 1 meter of water for 30 minutes. The iPhone 12 improves upon this with an IP68 rating, allowing it to be submerged in up to 6 meters of water for 30 minutes, and also incorporates a Ceramic Shield front cover for enhanced drop performance. [2, 3, 26, 40]
• Repairability: Both the iPhone X and iPhone 12 received a repairability score of 6 out of 10 from iFixit, indicating that while some components like the display and battery are relatively accessible for replacement, other repairs can be more complex due to internal design and waterproofing measures. [8, 11, 12, 15, 28]

Performance is a key differentiator, with the iPhone 12 benefiting from a newer internal architecture designed for more demanding tasks and improved efficiency compared to the iPhone X.

• Processing Power: The iPhone 12 features a more advanced processor than the iPhone X. This translates to faster app loading times, smoother multitasking, and more fluid performance in graphically intensive games and applications. Users will notice a more responsive overall experience, especially with newer software and complex tasks. [3, 4, 13, 30, 31, 35, 40]
• Multitasking and Responsiveness: The iPhone 12 includes 4GB of RAM, providing more capacity for running multiple applications simultaneously without slowdowns. The iPhone X, with 3GB of RAM, handles everyday tasks well but may show limitations when switching between many active applications or running very memory-intensive processes. [11, 13, 24, 40]
• Storage Options: Both models offer various internal storage capacities to suit different user needs. The iPhone X was available with 64GB or 256GB, while the iPhone 12 offers 64GB, 128GB, and 256GB options, providing more flexibility for users who require additional space for apps, photos, and videos. [9, 13, 24, 35]

Both devices feature OLED display technology, offering vibrant visuals, but the iPhone 12 introduces advancements in brightness and contrast for an enhanced viewing experience.

• Display Technology and Clarity: Both the iPhone X and iPhone 12 utilize OLED (Organic Light-Emitting Diode) Super Retina displays, providing deep blacks, high contrast, and vibrant colors. The iPhone X has a 5.8-inch display with a resolution of 2436x1125 pixels at 458 ppi. The iPhone 12 features a slightly larger 6.1-inch Super Retina XDR display with a resolution of 2532x1170 pixels at 460 ppi, offering comparable pixel density and sharpness. [1, 2, 5, 7, 9, 20, 22, 24, 25, 26, 29, 35, 40]
• Brightness and Contrast: The iPhone X offers a typical maximum brightness of 625 nits and a contrast ratio of 1,000,000:1. The iPhone 12 matches the 625 nits typical brightness but can reach up to 1200 nits for HDR content, and boasts an improved 2,000,000:1 contrast ratio, resulting in a more dynamic and impactful visual experience, especially when viewing HDR videos or photos. [2, 3, 5, 18, 26, 35]
• Refresh Rate and Features: Both displays operate at a standard 60Hz refresh rate. The iPhone X introduced True Tone technology, which adjusts the display's white balance to match ambient light. The iPhone 12 retains True Tone and adds Haptic Touch, providing tactile feedback for certain interactions. [1, 2, 3, 5, 7, 26, 35]

The camera systems on both the iPhone X and iPhone 12 are capable, but the newer model benefits from significant advancements in computational photography and low-light performance.

• Rear Camera System: The iPhone X features a dual 12MP rear camera system with a wide-angle (f/1.8) and a telephoto (f/2.4) lens, both with optical image stabilization. It supports Portrait Mode and Portrait Lighting. The iPhone 12 also has a dual 12MP rear camera system, but with a wider f/1.6 aperture for its main lens and an ultrawide (f/2.4) lens. It includes Night mode, Deep Fusion, and Smart HDR 3, which significantly enhance image quality, particularly in challenging lighting conditions. [1, 2, 3, 6, 10, 16, 21, 23, 25, 27, 31, 35, 37, 40]
• Front Camera Capabilities: The iPhone X is equipped with a 7MP TrueDepth front camera (f/2.2) that supports Portrait Mode and Animoji. The iPhone 12 upgrades to a 12MP TrueDepth front camera (f/2.2) and extends features like Night mode, Deep Fusion, and Smart HDR 3 to the front camera, allowing for higher quality selfies and video calls in various lighting environments. [1, 2, 3, 6, 10, 21, 23, 35]
• Video Recording: Both devices can record 4K video at up to 60 frames per second. The iPhone 12 further enhances video capabilities with HDR video recording with Dolby Vision at up to 30 frames per second, offering more vibrant and detailed video capture. Both also support slow-motion video. [2, 3, 6, 10, 21, 23, 35, 40]