The 5.8-inch front screen melts into a highly polished curved-edge stainless steel band encircling a durable all-glass body available in two opalescent finishes. Both feature a black front panel. The edge-to-edge top-to-bottom Super Retina display adopts OLED technology for true-to-life colors, deep blacks, and a million-to-one contrast ratio. It features a 2436 x 1125 resolution and 458 pixels per inch. It supports HDR, wide color, 3D Touch, and True Tone for adjusting the white balance of the display to match the ambient lighting.
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The glass body of the device is IP 67 water and dust resistant and it enables support for inductive wireless charging. The iPhone X adopts the Q i wireless standard and can charge through the glass back using any Q i-certified charging accessory.
With an edge-to-edge design, there is no room for a Home button, so the iPhone X adopts an updated user experience. A swipe up at the bottom of the screen brings up the Home screen, while a swipe and a hold brings up App Switcher. There’s a Tap to Wake feature for looking at notifications, the side button can be pressed and held to activate Siri, and the Control Center is accessed by swiping downwards from the top status bar.
No Home button also means no Touch ID, so unlocking the device is done with a Face ID facial recognition system. Face ID uses the True-depth front-facing camera system to create a 3D map of your face that’s used much like a fingerprint for unlocking the iPhone, authenticating Apple Pay purchases, making App Store purchases, and accessing pass code protected apps.
Face ID is powered by a state of the art dual-core neural engine built into the A11 Bionic chip, data stored in the Secure Enclave and all processing done on-device. The A11 chip includes a total of six cores, with two performance cores and four high-efficiency cores, including the neural engine. It uses infrared camera technology so it works in the dark. It also uses machine learning and detects your face with hats, glasses, beards, and other objects obscuring your face. Because it uses a 3D map of the face, Face ID cannot be fooled by photos, masks, or other facial replicas. As an added layer of security, Face ID is “attention aware” and unlocks your iPhone only when you’re looking at it.
The performance cores are 25 percent faster than the A 10, while the high-efficiency cores are 70 percent faster. An upgraded GPU is 30 percent faster, and there’s 3 GB of RAM in the device.With a second-generation Apple-designed performance controller, all six cores in the A11 chip can be accessed at the same time, resulting in much improved performance, especially when it comes to multi-threaded workloads. The A11 also features a faster GPU, an Apple-designed image signal processor and video encoder, an A11 motion co processor, and the Secure Enclave for Face ID.
The same 7-megapixel True Depth camera that powers Face ID enables a feature called Animoji. Animoji are 3D emoji able to mimic your facial expressions. The TrueDepth camera tracks more than 50 facial muscle movements and translates them to the Animoji, which can be used in the Messages app. Apple’s True Depth camera also introduces Portrait Mode for the front-facing camera and enables Portrait Lighting, a feature for adjusting the lighting in a portrait image taken by the front or rear camera.
At the rear, the iPhone X features a vertical 12-megapixel dual-lens camera arrangement with an f1.8 wide angle lens and an f/2.4 aperture telephoto lens. Both lenses support optical image stabilization and have improvements like an updated color filter, deeper pixels, better low light zoom, and improved video stabilization. Between the two cameras, there’s a quad-LED True Tone flash.