There is provided an electronic device capable of connecting to an external device and outputting image data recorded in an internal or external recording medium though an internal or external sending unit to the external device. The electronic device includes an operation unit operable to receive an operation made by a user, and a controller operable to control sending the image data. The controller has a first communication mode which controls the sending unit so as to send image data selected by the operation unit, and a second communication mode which controls the sending unit so as to send image data requested from the external device, and the controller prohibits switching from the second communication mode to the first communication mode even when an operation to switch from the second communication mode to the first communication mode is performed on the operation unit in the second communication mode.