A display device comprising: a first body configured to include a first screen; a second body configured to include a second screen; a third body configured to include a third screen, wherein the first screen, the second screen and the third screen are provided on a front side of the display device; a first bending portion configured to connect the first body with the second body; a second bending portion configured to connect the second body with the third body; a first camera of first resolution, which is provided in the first body; a second camera of second resolution, which is provided in the second body, wherein the first resolution of the first camera is higher than the second resolution of the second camera and the first camera and the second camera are provided on the front side of the display device; and a processor configured to control the first camera, the second camera, the first screen, the second screen and the third screen, characterized in that the processor is further configured to: detect a signal for selecting a first mode for self-photographing or a second mode for normal photographing and enter the first mode for self-photographing or the second mode for normal photographing in accordance with the signal, and detect a user's face or eyes through the first camera and the second camera, wherein when the display device is in the second mode for normal photographing and when the first bending portion is bent, the processor is configured to: deactivate the camera which has detected the user's face or eyes and activate the camera which has not detected the user's face or eyes, provide a preview interface to the second screen and the third screen if the first camera is activated, wherein the preview interface displays a first image acquired from the first camera, and provide the preview interface to the first screen if the second camera is activated, wherein the preview interface displays a second image acquired from the second camera. a first body configured to include a first screen; a second body configured to include a second screen; a third body configured to include a third screen, wherein the first screen, the second screen and the third screen are provided on a front side of the display device; a first bending portion configured to connect the first body with the second body; a second bending portion configured to connect the second body with the third body; a first camera of first resolution, which is provided in the first body; a second camera of second resolution, which is provided in the second body, wherein the first resolution of the first camera is higher than the second resolution of the second camera and the first camera and the second camera are provided on the front side of the display device; and a processor configured to control the first camera, the second camera, the first screen, the second screen and the third screen, detect a signal for selecting a first mode for self-photographing or a second mode for normal photographing and enter the first mode for self-photographing or the second mode for normal photographing in accordance with the signal, and detect a user's face or eyes through the first camera and the second camera, wherein when the display device is in the second mode for normal photographing and when the first bending portion is bent, the processor is configured to: deactivate the camera which has detected the user's face or eyes and activate the camera which has not detected the user's face or eyes, provide a preview interface to the second screen and the third screen if the first camera is activated, wherein the preview interface displays a first image acquired from the first camera, and provide the preview interface to the first screen if the second camera is activated, wherein the preview interface displays a second image acquired from the second camera. deactivate the camera which has detected the user's face or eyes and activate the camera which has not detected the user's face or eyes, provide a preview interface to the second screen and the third screen if the first camera is activated, wherein the preview interface displays a first image acquired from the first camera, and provide the preview interface to the first screen if the second camera is activated, wherein the preview interface displays a second image acquired from the second camera.