https://www.cnet.com/news/xiaomis-double-bending-foldable-phone-just-stole-samsungs-thunder/

This is novel for two reasons. It's the first time any company has seen a trifold foldable phone prototype and at first glance, this design makes a lot of sense. So far we've seen foldable phones that bend down the middle, such as the Royole FlexPai that's on sale now, and the folding Samsung prototype, a phone that's rumored to be called the Galaxy X, Galaxy F, Galaxy Fold or Galaxy Flex.

Second, Xiaomi's design is the first true challenge to Samsung's early leadership in the foldable space, a brave new design that's poised to bring the stagnant smartphone market renewed interest and growth. Industry experts agree that foldable phones won't drive enormous sales and revenue when they first appear, but that early movers can gain experience in what works and what doesn't ahead of rivals who hang back.