A control method for a mobile device for controlling 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 mobile-device location information, wherein the mobile-device location information is information specifying a room or an area where the mobile device is present; characterized in that the method further causes the computer to execute: determining whether or not a piece of illumination-device location information matches the mobile-device location information; displaying (S104 - S106) one or more setting screens on the display in a row in accordance with a display order;; and transmitting a control signal for controlling the one or more illumination devices in accordance with setting information indicating an illumination state set through a user's operation performed through the setting screens, to the one or more illumination devices; wherein the one or more setting screens includes a slider to adjust brightness of corresponding illumination devices; each of the illumination-device location information is information specifying a room or an area where a corresponding one of the one or more illumination devices is present; the display order is determined 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; the display order displays an illumination device setting screen corresponding to an illumination device that corresponds to illumination device location information that matches the room or the area identified by the mobile-device location information on a first area of the row; and the first area begins at a left portion of the row and sequentially occupies parts of the row. acquiring mobile-device location information, wherein the mobile-device location information is information specifying a room or an area where the mobile device is present; characterized in that the method further causes the computer to execute: determining whether or not a piece of illumination-device location information matches the mobile-device location information; displaying (S104 - S106) one or more setting screens on the display in a row in accordance with a display order;; and transmitting a control signal for controlling the one or more illumination devices in accordance with setting information indicating an illumination state set through a user's operation performed through the setting screens, to the one or more illumination devices; wherein the one or more setting screens includes a slider to adjust brightness of corresponding illumination devices; each of the illumination-device location information is information specifying a room or an area where a corresponding one of the one or more illumination devices is present; the display order is determined 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; the display order displays an illumination device setting screen corresponding to an illumination device that corresponds to illumination device location information that matches the room or the area identified by the mobile-device location information on a first area of the row; and the first area begins at a left portion of the row and sequentially occupies parts of the row. determining whether or not a piece of illumination-device location information matches the mobile-device location information; displaying (S104 - S106) one or more setting screens on the display in a row in accordance with a display order;; and transmitting a control signal for controlling the one or more illumination devices in accordance with setting information indicating an illumination state set through a user's operation performed through the setting screens, to the one or more illumination devices; wherein the one or more setting screens includes a slider to adjust brightness of corresponding illumination devices; each of the illumination-device location information is information specifying a room or an area where a corresponding one of the one or more illumination devices is present; the display order is determined 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; the display order displays an illumination device setting screen corresponding to an illumination device that corresponds to illumination device location information that matches the room or the area identified by the mobile-device location information on a first area of the row; and the first area begins at a left portion of the row and sequentially occupies parts of the row.