1. A folding portable information terminal including an upper unit having a display section on one surface, a lower unit having an operating section on one surface, and a movable joining member which openably and pivotally couples the upper and lower units to each other, characterized by comprising: upper unit posture detection means for detecting opening-closing and/or pivoting operation of the upper unit; an information recording section which records at least one of predetermined voice information, still image information, and moving image information; and information recording control means for setting said information recording section in a mode of recording selected predetermined information when said upper unit posture detection means detects a shift of the upper unit to a predetermined posture or a shift of the upper unit from a predetermined posture during voice communication or a standby period.