Mobile terminal and application method thereof

The invention provides a mobile terminal and an application method thereof. The mobile terminal comprises a first SIM (Subscriber Identity Module) card module, a second SIM module, a first communication module, a second communication module and a card management module, wherein the first SIM card module is used for providing a first user identity for network communication authentication; the second SIM card is used for providing a second user identity for network communication authentication; the first communication module is used for performing mobile data service communication through a first operating system according to the user identity provided by a corresponding SIM card module; the second communication module is used for performing mobile voice or short message communication through a second operating system according to the user identity provided by a corresponding SIM card module; and the card management module is used for setting corresponding relations between the first SIM card module as well as the second SIM card module and the first communication module as well as the second communication module according to an SIM card module switching command. Through adoption of the mobile terminal and the application method, isolation of voice and short message communication from data communication is realized, the personal information of a mobile terminal user is effectively protected, and the user information security problem of the mobile Internet is solved.