An electronic device, a control method thereof, and a computer-readable medium. The electronic device may include a main body and a cover part coupable to the main body and configured to be attached to and detached from the main body. The electronic device further includes a controller configured to control to output a first signal for determining a coupling state of the cover part with respect to the electronic device, receive a second signal corresponding to the first signal, and determine the coupling state of the cover part with respect to the electronic device based on attributes of the second signal.