Collapsible mobile telephone

摘要

An object of the invention is to provide a folder type mobile phone which can realize communication in a closed state with a suitable volume, reduce the number of the buttons as many as possible and avoid an erroneous operation and enlargement of a case. In addition to a transmission microphone 12 , a receive 22 and a large-volume speaker 23 for sounding a melody or buzzer etc. signaling an incoming call, a folder type mobile phone according to the invention further includes a volume variable unit 4 B, and a switching unit 4 A for switching setting functions in a manner that a first function for communicating by using the transmission microphone 12 and the receiver is set at the time of communicating in an opened state of a cover case and a second function for sounding received voice by adjusting the sounding volume of the transmission microphone 12 and the large-volume speaker 23 to a small level almost same as the sounding volume of the receiver 22 at the time of communicating in a closed state of the cover case.