By definition, a phone is for talking, right? Well, with Kim Min Seok's Samsung Cave concept phone, you can make calls, but you'll probably let your fingers do the talking because emailing and texting is so much easier.
Rather than an on-screen or slide-out keyboard, this multitasking phone has a mechanical keyboard built into the parallel ridges that run around the oval case outside the touchscreen. The rake of the four rows of keys is a comfortable 30 degrees so you can look down at the screen while tapping out a Web address or long email.
A major drawback: At a time when phone designs are getting thinner and thinner, the Cave appears thick and clunky.