Samsung has been rumoured to be exploring smartphones beyond traditional form factors. Following its success with the book-style and clamshell-design handsets in recent years, leaks have indicated that it is also developing a wide foldable, widely known as the Galaxy Z Fold Wide. A newly discovered patent now suggests that the South Korean technology conglomerate is working on a rollable handset with an expanding display. The device is said to feature a movable rear camera module that shifts position as the phone expands.