A mobile device includes a communicator configured to transmit information about least one of a frequency, a pattern, and an amplitude to an electronic device located within a critical distance from the mobile device, an acoustic wave output interface configured to output an acoustic wave matching at least one of the frequency, the pattern, and the amplitude, and a controller configured to provide a user interface to operate a function of the electronic device when information about the function of the electronic device controllable by the mobile device is received through the communicator.