A foldable mobile terminal is capable of carrying out more highly complicated key input such as key input for operating a certain function even in a state in which a housing is closed. This foldable mobile terminal includes a first housing and a second housing connected to each other to be supported so that they can freely be opened/closed. This foldable mobile terminal includes an external display part that can be viewed in a closed state on the first housing or the second housing and a side face key on a side face of the first housing or the second housing. When a soft key icon is displayed on the external display part, the side key is used as a soft key corresponding to the soft key icon.