A 7-inch device is a tablet. A 6.5-inch device is a phone. Both make and receive calls and connect to the Internet. Where can mobile phones go next? Perhaps they can fold themselves, or roll into a shell like snails.
A few days ago details of a patent application made by Samsung to the US Patent Office in November last year became known. The patent, titled Foldable Device and Method of Controlling the Same, shows a design where the display is folded like a wallet. Another tentative Samsung design shows the display rolled up, to be pulled open before use. Is this the shape of phones to come that will offer larger screens without a larger package? Organic Light Emitting Diode or OLED displays are inherently flexible -- and analysts predict Samsung may harness this technology to roll out a foldable phone by year end.
It tested foldable and rollout displays even 3 years ago which you can check out in a YouTube video called "2014 Samsung Flexible OLED Display Phone and Tab Concept".
