A digital device providing a text messaging service including a display configured to display a text messaging interface; a transceiver configured to transceive at least one message to and from an external device; and a processor configured to cause the display to display the at least one message on the text messaging interface. The processor is further configured to in response to a first input, cause the display to display an application interface including at least one icon in the displayed text messaging interface, in response to a second input, display a map application instead of the displayed text messaging interface, and in response to a third input, transmit a message to the external device. In addition, the transmitted message including a first map image indicating where the digital device is currently located and link information executing the map application.