The invention relates to a mobile terminal which comprises a casing, a display panel and a photosensitive device. The casing comprises a middle frame casing, the middle frame casing comprises a casingbody and a metal frame enclosed in the periphery of the casing body, the display panel is arranged on the casing body, the metal frame is provided with an antenna clearance area, and the photosensitive device is arranged in the antenna clearance area and used to detect the brightness of the environment so as to control the screen brightness of the display panel. According to the mobile terminal,the photosensitive device is arranged in the metal frame, concretely, in the antenna clearance area of the metal frame, so that communication requirements for the mobile terminal can be met, requirement of a full screen design or a high screen occupation design can be met, and user experience is improved under the condition that functional requirements for the mobile terminal are met.