Motorola teases rollable smartphone concept

Motorola is dipping into the rollable smartphone market with a new concept. The phone starts out as a pocketable four inches high, and when you click on a button, this OLED panel expands to a more typical 6.5 inches. It takes another click to bring it back to its original form. The phone is usable at both sizes and the content on the screen adapts to the size.

Source