An electronic device that is accessible to a first storage medium that has no communication function and a second storage medium that has a communication function and is detachable to the device, including: an input unit configured to input image data; a designation unit configured to designate at least one of the first storage medium and the second storage medium as a storage medium serving as a storage destination of the image data input by the input unit; and a control unit configured to, if the first storage medium is designated as the storage destination of the image data and the second storage medium is not designated, store the image data in the first storage medium and store the image data in the second storage medium as well so as to transmit the image data to an external apparatus by the communication function of the second storage medium.