Folding iPhone flip phone concept imagines Apple Watch-like secondary display

By Ben Lovejoy

Unlike a conventional-sized phone which unfolds to something iPad-like, the flip concept envisages a conventional size iPhone that folds in half…

There have been rumors and reports of Apple working on a folding iPhone for a number of years now. 

Does Apple make something that unfolds into a tablet-sized device, or a normal-sized phone which folds in half?