Smartphones and tablets are two totally different product categories, but with the arrival of foldable devices, soon they could become one. And if a new patent is anything to go by, a similar thing could eventually happen with smartphones and smartwatches.

Unlike the Galaxy Fold which folds horizontally, the device Samsung describes in its latest patent can be bent vertically. This is made possible by the flexible display and specially-designed hinge, the latter of which constitutes most of the device’s frame. 

Through this form factor, users would gain access to an extremely ...