A control method for a mobile device that controls one or more illumination devices, the mobile device including a display, a computer, and a memory, the control method causing the computer of the mobile device to execute acquiring a piece of mobile-device location information indicating a location where the mobile device is present, sorting one or more setting screens corresponding to the respective one or more illumination devices using information stored in the memory, the information indicating correspondences between the one or more illumination devices and one or more pieces of illumination-device location information indicating locations where the respective one or more illumination devices are present, displaying the sorted one or more setting screens on the display, and transmitting a control signal in accordance with setting information indicating an illumination state set through the setting screens, to the one or more illumination devices.