A mobile communication terminal in accordance with the present invention includes a first wireless communication unit 102 corresponding to a first wireless communication system and an interface 107 capable of detachably connecting an external apparatus 200. The mobile communication terminal for starting up a communication operating system using a battery as a power supply includes a determination unit 112 for determining whether or not the external apparatus 200 connected to the interface 107 has a second wireless communication unit 202 corresponding to a second wireless communication system and a control unit 112 for controlling the communication operating system to be started up by executing a start-up sequence of the second wireless communication unit 202 without executing a start-up sequence of the first wireless communication unit 102 in a case where the determination unit 112 determines that the second wireless communication unit 202 is included when the communication operating system is started up again after being disabled due to a decline in the battery voltage. Thus, the multi-mode communication based on the battery voltage can be executed efficiently and user convenience can be improved.