A method for controlling an electronic device is provided. The electronic device includes a housing, a keypad, a first conductive surface, and a second conductive surface. The keypad is rotatable and includes buttons. The first conductive surface is attached to the bottom of the keypad, rotatable with the keypad, and includes first contact portions. The second conductive surface is fixed in the housing, arranged below the first conductive surface, spaced apart from the first conductive surface, and includes second contact portions. The method includes determining which of the buttons is pressed. Determining whether an activation signal is received, wherein when the first contact portion contacts one of the second contact portions which shape is the same as the first contact portion, the activation signal is generated. Determining the pressed button is activated if the activation signal is received, and executing a function corresponding to the activated button.