Sources: Samsung is working on two new foldable smartphones, a vertical clamshell-like device with an extra outside screen and another that folds like Mate X (Sam Kim/Bloomberg)

Sam Kim / Bloomberg:
Sources: Samsung is working on two new foldable smartphones, a vertical clamshell-like device with an extra outside screen and another that folds like Mate X  —  - Device that folds from top to bottom is next in line  — ‘Outfolding’ model may also challenge Huawei, Xiaomi