Foldable smartphone

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A foldable smartphone (also called a foldable phone or simply foldable) is a smartphone with a folding form factor. While folding designs have been used previously in flip phone models, the term "foldable" now generally refers to a newer style featuring flexible displays in which the display itself folds. Some variants of the concept instead use multiple touchscreen panels connected by a hinge. Various structural layouts exist in this category. Devices may fold horizontally on a vertical hinge into a wider, tablet-like form, which typically use an inward-folding booklet-style design with a smaller screen on the outside cover allowing interaction without opening the device. Some early devices, such as the Huawei Mate X, used an outward-folding design in which a single display would wrap around to the back of the device when folded. A more recent category is the emergence of tri-folds, which contain two hinges rather than one and allowing for even greater display sizes on the interior. Foldable...

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