What is the iPhone X screen resolution / size?

Does the iPhone X have an OLED display?

iPhone X Display

The iPhone X is equipped with Super Retina HD OLED Multi-Touch display with 2436-by-1125-pixel resolution at 458 ppi. It is the first iPhone model that doesn't ship with an LCD screen, and it features more accurate colors, true blacks, high brightness, and a 1,000,000 to 1 contrast ratio. Other features include fingerprint-resistant oleophobic coating, 3D Touch and support for display of multiple languages and characters simultaneously.