https://www.cnet.com/news/i-used-the-huawei-mate-x-and-now-im-a-foldable-phone-believer-galaxy-fold-mwc-2019/

Foldable phones present a chance to shake up a coasting industry while also effectively doubling the amount of screen space you have to use on your phone. Because foldable phones are phone-tablet hybrids, they can command a higher price, which opens up an important revenue stream at the top end for companies looking to make a greater profit in a slowing market. But this new era of bendable screens also represents the Wild West of phone design: A phone could fold inward or outward, down the center or on two sides, or even bend back around your wrist like a watch. At this early stage, companies are working out what a foldable phone means. Right now, anything goes.

Huawei wants its turn in the foldable phone spotlight, and with the Mate X, it makes a convincing -- but expensive -- audition. The main competition: Samsung's Galaxy Fold phone, which has two screens, six cameras total and unfolds in the center to open into a 7.3-inch tablet. Huawei's Mate X -- that's pronounced "ex," not "ten" -- has three ways to use on 8-inch screen, four cameras (three you can see, one that's temporarily hidden) and an interesting design that gives you a grippable base for one-handed use.