A mobile phone includes a generation unit for generating a user interface for instructing an execution unit to execute a predetermined function based on an application program, a memory unit for storing a definition file including information defining an object of the user interface, and a selection screen generation unit for generating a screen to receive selection of the object. The selection screen generation unit generates the selection screen based on object definition information of a plurality of user interfaces instructed. The generation unit generates a definition file including definition information of selected objects and also generates a compound user interface based on the definition file.