— a rather unusual type of body found in individual smartphones. Such devices usually consist of two flaps, like "clamshells" (see the relevant paragraph); however, they can be folded either horizontally or vertically (depending on the model), and the screen occupies both halves of the body at once and bends when folded. When folded, the screen can be located both inside and outside the device (in the first case, another display can be installed from the outside, allowing you to use the main features of a smartphone when folded). Anyway, this layout allows you to achieve a much larger screen size compared to monoblock smartphones, and at the same time maintain compactness and ease of carrying. On the other hand, foldable screens are complex and expensive, and therefore they are used extremely rarely, mainly in top-tier devices.
