A Japan-based designer known as Marimo-san is thinking way out of the box with his latest cellphone concept design, featuring a mechanism that allows for a detachable screen. The screen in this cellphone concept design can be removed so the user can enjoy video calls on the go. And aside from that, the slot for the screen should also accept other add-ons such as a widescreen display and a dual screen video viewer, to name a few, turning the cellphone into a number of new devices at any given time.