HANDY PHONE

In a portable telephone apparatus equipped with an electronic notebook function, a telephone operation key (3) such as a dialing key is mounted on an upper surface of an openable/closable member mounted on an upper surface of a case body (1), whereas electronic notebook operation keys (4:5) such as a character input key are provided at a region of a surface of the case body (1) covered by the openable/closable member (2), and also at a rear surface of said openable/closable member (2). The portable telephone apparatus further includes a switch (6) for detecting an opening/closing state of the openable/closable member (2), and a mode selecting unit for selecting a telephone mode and an electronic notebook mode in response to a detection signal derived from the detecting signal (3). Furthermore, a search key (3a, 3b, 3c) for searching storage data about the electronic notebook is employed on this upper surface of the openable/closable member (2). When this search key (3) is operated, electronic notebook data such as telephone directory data constructed of one pair of a telephone number and a name, may be displayed on a display unit.