A Galaxy Z Flip4 (left) and Galaxy Z Fold4 . Samsung has unveiled a new generation of foldable smartphones as the tech giant continues its push to bring flexible-screen devices to the mainstream. The company used its Unpacked virtual event to announce the Galaxy Z Fold4 and Galaxy Z Flip4. Picture date: Friday August 5, 2022. PA Photo. See PA story TECHNOLOGY Samsung. Photo credit should read: Martyn Landi/PA Wire