1. A mobile radio Communication apparatus being able to transmit data and voice, connected with one of base stations over a radio communication channel, the apparatus comprising; plurality of mobile identification numbers (MINs); an interface being able to connected with an external device inputting data from the external device and outputting data to the external device; data communication request detecting means for detecting a data communication request from the external device through the interface; and connection control means for controlling the connection with the base station by using a first MIN of the plurality of MINs responsive to output of the detecting means.