DUAL NETWORK TERMINAL AND METHOD FOR STARTUP AND SHUTDOWN THEREOF

The present invention discloses a method for startup of dual-network terminal. The method includes: the application subsystem receiving a push-button signal of startup, and initializing peripherals and an application program after powering up; the application subsystem controlling the 2G wireless communication subsystem to power up, the 2G wireless communication subsystem constructing a first virtual SIM proxy module in a protocol stack thereof, reading information in the SIM card in the subscriber identity module, and storing information in the SIM card into first virtual SIM proxy module; and the application subsystem controlling the 3G wireless communication subsystem to power up, the 3G wireless communication subsystem constructing a second virtual SIM proxy module in a protocol stack thereof, reading information of SIM card in the first virtual SIM proxy module into second virtual SIM proxy module. The present invention further discloses a method for shutdown of dual-network terminal and a dual-network terminal.