The invention aims at providing a folding type radio terminal, a call start method and a call start program which allows the user to start a call with a simple operation. On the folding type radio terminal, when a motor driving button is pressed while an incoming signal is being received with a top lid open with respect to a main unit, a controller drives a motor to open the top lid. When a top lid state detector has detected that the top lid is fully open or a predetermined time is measured by the timer from the driving of the motor, the controller 155 shuts down the motor. The controller performs call connection processing in response to the incoming signal so as to place the radio terminal in the call state. This starts a call.