The iPhone X is a smartphone designed, developed and marketed by Apple Inc. It, alongside the iPhone 8 and 8 Plus, make up the 11th generation of the iPhone, it was available to pre-order on October 27, 2017, and was released on November 3, 2017. The naming of the iPhone X is to mark the 10th anniversary of the iPhone. The iPhone X used a glass and stainless-steel form factor and “bezel-less” design, shrinking the bezels while not having a “chin”, unlike many Android phones. It was the first iPhone to use an OLED screen. The home button’s fingerprint sensor was replaced with a new type of authentication called Face ID, which used sensors to scan the user’s face to unlock the device. This face-recognition capability also enabled emojis to be animated following the user’s expression. With a bezel-less design, iPhone user interaction changed significantly, using gestures to navigate the operating system rather than the home button used in all previous iPhones.