An open-close detecting unit (220) detects a transition, of an electronic device (1 0), from an opened state to a closed state or from a closed state to an opened state. A power control unit (21 0) sets the operation mode of an application processing unit that executes applications. When a hold-switch (50) is in an OFF state, the power control unit (210) switches the operation mode of the application processing unit (104) from normal mode to sleep mode upon detection of a transition from an opened state to a closed state. Meanwhile, when the hold-switch (50) is in an ON state, the power control unit (210) will not switch the operation mode of the application processing unit (104) from normal mode to sleep mode even upon detection of a transition from an opened state to a closed state.