https://www.cnet.com/news/tcl-is-working-on-a-foldable-phone-that-transforms-into-a-smartwatch/

One tablet has a display that folds inward, like a clamshell, while the other has a display on the outside, like the Royole Flexpai. The smartphones, meanwhile, also have two variants that fold on the inside and outside, but they bend at the horizontal line, like a traditional flip phone. The last phone appears to be tall and skinny and able to curve into a cuff around a wrist. None share the same design as Samsung's foldable phone.

The images underscore the industry's growing interest in foldable devices, which is seen as the next major leap in phone design and a way to get us interested in phones again. People are holding onto their smartphones longer than before, and it's getting harder to justify a pricey upgrade given the relatively minor tweaks made every year. The hope is foldables can change that and introduce a new way of interacting with electronics.