https://www.cnet.com/news/ces-2019-i-just-bent-a-smartphone-in-half-without-breaking-it-and-it-was-glorious/

That, it seems, is half of the phone's selling point. Yes, the FlexPai's foldable display allows it to transform between phone and tablet form factors, but it also means that the device is less susceptible to screen damage. The flexible, plastic screen won't crack or shatter in the way a glass display would, to the point that Royole calls it "virtually unbreakable." That kind of durability is certainly appealing. Unfortunately, the phone experience isn't.

The Flexpai is technically an Android 9 device, but to make Google's OS play nice with the phone's unique display, Royole had bake in a some heavy tweaks. The resulting experience is called "Water OS," named for the way icons seem to flow across the screen as it's unfolded. At least, that's how it's supposed to work -- in practice, the phone often glitched out and changed apps as I unfolded it, the result of the screen reading my fingers on the opposite side of the fold as I bent the device.