Aspects of the present invention include a device including processing circuitry that detects a first user action according to a first signal received from a first sensor while operating in a first mode, the first user action being gripping and lifting up of the device, changes an operation mode from the first mode to a second mode based on the first user action, detects a second user action according to a second signal received from a second sensor while operating the second mode, the second user action being a touch operation, performs an operation based on the second user action, and changes the operation mode from the second mode to a third mode after a predetermined period of time elapses, the second mode consuming more power than the first mode, and the third mode consuming more power than the first mode.