Behand is a prototype of a new way of interaction that allows a mobile phone user to manipulate virtual three-dimensional objects inside the phone by gesturing with their hand. Behand provides a straightforward 3D interface and extends the phone’s input and display space. It is ergonomically appropriate and technically feasible. Behand was the outcome of a design case project with Luz Cabellero and Valentina Occhialini at the Industrial Design department of the Technical University of Eindhoven. Our supervisor was Andres Lucero, who worked for Nokia at the time. The project entailed developing a prototype and performing a user evaluation. The evaluation showed that users find the concept “useful”, “innovative” and “fun” and there are no acceptability issues. Behand won the Student Design Competition at MobileHCI in 2010.