According to one aspect of the invention, there is provided a mobile apparatus including: a plurality of input sections each configured to display at least one image that corresponds to an input value assigned thereto; a plurality of label areas provided correspondingly to the plurality of input sections, each of the label areas labeled with at least one characters associated with the input value that is assigned to a corresponding one of the plurality of input sections; a photosensor configured to measure ambient illuminance; and a display controller configured to control turn-off and turn-on of image-display at the plurality of input sections based on the ambient illuminance.