I PHONE X

                                           I PHONE X

              iPhone X  is a smartphone designed, developed, and marketed by Apple Inc. It was announced on September 12, 2017, alongside the iPhone 8 and iPhone 8 Plus at the Steve Jobs Theater in the Apple Park campus. The phone was released on November 3, 2017. This iPhone marks the device's tenth anniversary, with "X" being the symbol for "ten" in Roman numerals.Within Apple's lineup, the iPhone X is positioned as a high-end, premium model with what Apple is presenting as technology of the future. It features wireless charging, an OLED display, dual-lens cameras with improved depth sensing, and a face recognition system called Face ID.

              The technology behind the iPhone X was in development for five years, as far back as 2012. Rumors of a drastic iPhone redesign began circulating around the time of iPhone 7's announcement in the third quarter of 2016, and intensified when a HomePodfirmware leak in July 2017 suggested that Apple would shortly release a phone with a nearly bezel-less design, lack of physical home button, Face ID, and other new features. A near-final development version of the iOS 11 operating system was also leaked in September 2017, confirming the new design and features.

                On August 31, 2017, Apple invited journalists to a September 12 press event, the first public event held at the Steve Jobs Theater on the company's new Apple Park campus in Cupertino, California. The iPhone X was unveiled during that keynote. Its US$999 starting price is the most expensive iPhone launch price. The price is even higher in international markets, such as £999 (US$1349) in the United Kingdom or €1189 (US$1344) in Italy due to sales taxes such as VAT and tariffs on imports.

The iPhone X has a 5.8-inch diagonal OLED color-accurate screen that supports DCI-P3 wide color gamut, sRGB, and high dynamic range, and has a contrast ratio of 1,000,000:1. The Super Retina display has the True Tone technology found on the iPad Pro, which uses ambient light sensors to adapt the display's white balance to the surrounding ambient light.

The iPhone X has two color options; silver and space gray.The front and back of the phone are composed of surgical-grade stainless steel to improve durability, and the device has a glass casing. The design is intended to be IP67 water and dust resistant.

The iPhone X contains Apple's A11 Bionic system-on-chip, which is a hexa-core processor with two cores optimized for performance that are 25% faster than the A10 Fusion processor, along with four efficiency-optimized cores that are 70% faster than the previous generation. It also features the first Apple-designed graphics processing unit and a Neural Engine, which powers an artificial intelligence accelerator.

Face ID replaces the Touch ID authentication system. The facial recognition sensor consists of two parts: a "Romeo" module that projects more than 30,000 infrared dots onto the user's face, and a "Juliet" module that reads the pattern. The pattern is sent to the Secure Enclave in the A11 Bionic chip to confirm a match with the phone owner's face. The system will not work with eyes closed, in an effort to prevent unauthorized access. Face ID has raised concerns, however, in regards to law enforcement accessing an individual's phone by pointing the device at the user's face. United States Senator Al Franken asked Apple to provide more information on the security and privacy of Face ID a day after the announcement, with Apple responding by highlighting the recent publication of a security white paper and knowledge base detailing answers.

The iPhone X launched with a modified version of iOS 11.0.1 that makes better use of the different screen layout.

The home button, which made its debut on the original iPhone, has been removed from iPhone X and most of its functions replaced with gestures, as on the home button-less Nokia N9, BlackBerry Z10, and WebOS devices. Some features like Siri and Apple Pay can be invoked using the side button.