Abstract: A foldable portable cellular phone capable of identifying a transmitter of an incoming call to which a response has not yet been made is provided. The above phone includes a telephone directory memory in which a plurality of kinds of incoming sounds each being associated with each of two or more transmitters is registered, a control section to store, when an incoming call that arrived while the foldable portable cellular phone was folded has not yet been responded to, incoming call history information about the transmitter, into an incoming call history storing area and a switch to search, when the incoming call that arrived while the foldable portable cellular phone was folded has not been yet responded to, for the incoming call history storing area.

Abstract: A portable cellular phone having a search function to do a search for operational functions in which a focused search for a desired operational function by combining an icon search with a keyword search can be performed and the operational function for which the user wants to search can be easily and rapidly searched for through a simple operation.

Abstract: The portable telephone is provided with an antenna serving as both transmitting and receiving antennas, a radio unit composed of a transmitter and a receiver, a display for displaying telephone numbers, an interchanging key for interchanging functional modes, a key-operating unit including numerical keys, and a control unit. A communicative mode related to a telephonic communication and a noncommunicative mode (a mode unrelated to communication) are selected alternately in accordance with an operation of the interchanging key. When the noncommunicative mode is selected, the radio unit stops functioning and a noncommunicative mode indicating lamp lights up to notify persons around the portable telephone that it is functioning in the noncommunicative mode. According to the aforementioned structure, the persons around the portable telephone will permit a user to use it in the noncommunicative mode.

Abstract: A portable radio terminal according to an aspect of the present invention includes a display section, a determination section, and a control section. The display section includes a display screen. The determination section determines whether data to be displayed on the display screen is text data or not. The control section sets the lightness of the display screen according to each of text data and data other than the text data, to be displayed on the display screen. A portable radio terminal according to another aspect of the present invention includes a display section that has a display screen, and a control section. The control section sets the lightness of the display screen according to each function of the portable radio terminal.

Abstract: A portable cellular phone having a search function to do a search for an operational function is provided in which a focusing search for a desired operational function by combining an icon search with a keyword search can be performed and an operational function for which a user wants to do a search can be easily and rapidly searched for by a simple operation. The search function to do the search for an operational function is implemented by a search table to store two or more keywords each corresponding to each of operational functions and icon information corresponding to the keyword and a control section to perform a focusing search by performing the icon search for an operational function and, in course of the icon search, by switching from the icon search to the keyword search and, if a targeted operational function can not be searched for, by additionally inputting an additional character to repeat the search through the search table.

Abstract: The portable telephone is provided with an antenna serving as both transmitting and receiving antennas, a radio unit composed of a transmitter and a receiver, a display for displaying telephone numbers, an interchanging key for interchanging functional modes, a key-operating unit including numerical keys, and a control unit. A communicative mode related to a telephonic communication and a noncommunicative mode (a mode unrelated to communication) are selected alternately in accordance with an operation of the interchanging key. When the noncommunicative mode is selected, the radio unit stops functioning and a noncommunicative mode indicating lamp lights up to notify persons around the portable telephone that it is functioning in the noncommunicative mode. According to the aforementioned structure, the persons around the portable telephone will permit a user to use it in the noncommunicative mode.

Abstract: A foldable portable cellular phone capable of identifying a transmitter of an incoming call to which a response has not yet been made is provided. The above phone includes a telephone directory memory in which a plurality of kinds of incoming sounds each being associated with each of two or more transmitters is registered, a control section to store, when an incoming call that arrived while the foldable portable cellular phone was folded has not yet been responded to, incoming call history information about the transmitter, into an incoming call history storing area and a switch to search, when the incoming call that arrived while the foldable portable cellular phone was folded has not been yet responded to, for the incoming call history storing area.