South Korean tech giants LG unveiled a really cool phone at CES 2021. It features an expandable screen. The narrow smartphone stores an extension to its screen in the side of the device that slides out just like a motorised scroll. Similar to most other phones, the normal standard-sized screen is perfect for texting, messaging and browsing, but the real magic happens while viewing videos and streaming on the fully extended large screen. A cinematic experience waiting to happen ... and all from your pocket!