Patent ID: 8311575

Claim:
A handheld mobile phone, comprising: at least two buttons, each button used for performing at least one specific function; a logic circuit, coupled to the at least two buttons, for generating a corresponding specific signal when one of the at least two buttons is pressed alone, and for generating at least a control signal when all of the at least two buttons are pressed; and a processing unit, coupled to the logic circuit, for executing the specific function of the pressed button according to the corresponding specific signal, and for controlling the handheld mobile phone to enter a reset state from an operating state according to at least the control signal when all of the at least two buttons are pressed; wherein when a first button among the at least two buttons is pressed and a second button among the at least two buttons is not pressed, the processing unit controls the handheld mobile phone to enter a first state from the operating state; and when both of the first button and the second button are pressed, the processing unit controls the handheld mobile phone to enter the reset state from the first state.