TCL’s prototype foldable phone has “Two Hinges”

TCL’s model dual-hinged phone, which overlays in three sections and opens into an immense, 10-inch tablet.

The most wonderful thing about TCL’s phone is that the pivots themselves move in various ways. The DragonHinge overlay in, similar to a book, or like the Galaxy Fold, while the Butterfly Hinge creases the contrary way.

The two pivots make a crisscross shape as you open and close the gadget, an outline in Z. It would appear that an accordion. Or on the other hand a taco holder. What’s more, I need to get my eager hands on it to give it an overlay, each board in turn: Open. Collapsed over once. Totally collapsed up into a triple-stacked sandwich with the goal that the uncovered board turns into the TCL telephone’s “external” screen. With this structure, a solitary continuous screen does everything.

As with other foldable phones, the act of folding feels physical and visceral in a way that makes me appreciate the engineering feat of any company attempting to make devices whose screens bend in half.

Foldable phones are the next frontier in phone design, delivering at least double the screen space in a package that’s practical enough to tote around. Unfolded, the large screens promise an expansive display for reading, watching videos, gaming and multitasking. Folded up, you can use them on the go. Despite very real fears over screen damage that could send lofty foldable ambitions crashing to the ground, device-makers are scrambling to push out their own new designs — to bag reputation points as much as to capture buyers’ attention.