A mobile terminal, comprising: a wireless communication unit; a position obtaining unit configured to obtain a current position of the mobile terminal; a camera configured to generate a preview image; a touchscreen configured to display the generated preview image; a controller configured to: control the touchscreen to display a first preview image including a first object and first object information about the first object based on the obtained position, if the first object information is selected via the touchscreen from the displayed first object information, hold the selected first object information within the first preview image such that the selected first object information is kept displayed even when the first object is not displayed, change the first preview image to a second preview image when a photographing view of the camera is changed by a user of the mobile terminal, maintain a display of the held first object information within the second preview image, if the held first object information within the second preview image is touched and dragged to a second object within the second preview image, search second object information having a category related to the first object information among object information about the second object; and control the touchscreen to display the found second object information and the first object information within the second preview image. a wireless communication unit; a position obtaining unit configured to obtain a current position of the mobile terminal; a camera configured to generate a preview image; a touchscreen configured to display the generated preview image; a controller configured to: control the touchscreen to display a first preview image including a first object and first object information about the first object based on the obtained position, if the first object information is selected via the touchscreen from the displayed first object information, hold the selected first object information within the first preview image such that the selected first object information is kept displayed even when the first object is not displayed, change the first preview image to a second preview image when a photographing view of the camera is changed by a user of the mobile terminal, maintain a display of the held first object information within the second preview image, if the held first object information within the second preview image is touched and dragged to a second object within the second preview image, search second object information having a category related to the first object information among object information about the second object; and control the touchscreen to display the found second object information and the first object information within the second preview image. control the touchscreen to display a first preview image including a first object and first object information about the first object based on the obtained position, if the first object information is selected via the touchscreen from the displayed first object information, hold the selected first object information within the first preview image such that the selected first object information is kept displayed even when the first object is not displayed, change the first preview image to a second preview image when a photographing view of the camera is changed by a user of the mobile terminal, maintain a display of the held first object information within the second preview image, if the held first object information within the second preview image is touched and dragged to a second object within the second preview image, search second object information having a category related to the first object information among object information about the second object; and control the touchscreen to display the found second object information and the first object information within the second preview image.