A touch-sensing electronic device includes a housing having a first touch-sensing surface, a second touch-sensing surface and a third touch-sensing surface; a touch-sensing unit accommodated by the housing for generating at least one control signal in response to touch-sensing operations respectively performed on or over the first touch-sensing surface, the second touch-sensing surface and the third touch-sensing surface; and at least one functional circuit disposed in the housing and being in communication with the touch-sensing unit for performing specific functions in response to the control signal. The touch-sensitive electronic device supports multi-phase touch-sensing.