With the Juke, Samsung attempted to combine a cell phone with an MP3 player, resulting in a super skinny phone that served as a music player when shut and a cell phone when opened. When closed, the phone’s keypad sits tucked away under the screen, which swivels out like a switchblade — undoubtedly the phone’s most memorable characteristic. It also had a spinning metal scroll wheel for navigating the phone’s tiny screen when in music-player mode.