1. A mobile information terminal which receives information search commands, transmits the commands to a host, receives the searched information from the host and displays the information, said device comprising: a display which displays a data display area for showing information, depending on retrieval commands, and a button area, which is always displayed in a restricted size at a predetermined position and includes a plurality of buttons for inputting at least one command for creating a connection with said host for retrieval, a command for transferring to a retrieval area, and a command for selecting an item to be searched; a position detector which detects positional data corresponding to a button pressed by a user; and a controller which transmits a command corresponding to the positional data detected by said position detector to the host, receives the searched information from the host and allows the searched information to be displayed on said data display area of said display.