Method for transmitting simple message

A message to be transmitted is selected from a list which includes the number of times a calling signal is to be sent for each of a plurality of messages. The number of calling signals corresponding to the message to be transmitted is read, and a transmitter controls communication so that the number of transmitted calling signals is limited to the number of calling signals corresponding to the message to be transmitted. A receiver, after a message corresponding to the number of calling signals arriving at the receiver is read from a list, displays the message on a display unit. According to this configuration, a message may be transmitted and received simply and surely under conditions set beforehand without establishing a voice communication line between the transmitter and receiver.