https://www.cnet.com/news/huawei-unveils-mate-x-joins-galaxy-fold-in-foldable-game/

While the Mate X can fold like Samsung's marquee smartphone, it's a fundamentally different device. The Galaxy Fold has two displays -- one in the front and a second, larger screen on the inside that unfolds like a clamshell. The Mate X has screens on the front and back of the device, which join together into a larger, continuous display after you fold it out.

The Mate X will also include a 5G connection and cameras that pack Leica technology.