Mobile terminal and method of controlling the same

A mobile terminal comprising:

• a body;
• a touchscreen provided on a front side of the body;
• an input device provided on a back side of the body, the input device being exposed through a back surface of the body and including a first button and a second button having a plurality of buttons arranged adjacent to and centered around the first button;
• and
• a controller configured to control a function based on a selection of the first or second buttons,
• wherein, when at least one of the first button or the second button is selected, the controller controls a different function to be activated depending on whether the touchscreen is being touched.

A method of controlling a mobile terminal, comprising:

• receiving an input at an input device provided on a back side of a body of the mobile terminal, the input device being exposed through a back surface of the body and having a plurality of buttons;
• determining a prescribed pattern associated with the received input, the prescribed pattern including at least one of a prescribed pattern of input to the plurality of buttons, an input on a touchscreen together with an input to the input device, a gesture input, or a state of the touchscreen or the mobile terminal at the time of an input at the input device;
• retrieving a command for a function associated with the prescribed pattern from a storage device, the storage device storing a mapping between a plurality of patterns of inputs and prescribed commands for a plurality of functions;
• and
• processing the retrieved command associated with the received input.