Method and system for operating bluetooth hands-free device

A method and a system for operating a bluetooth hands-free device. The system of the bluetooth hands-free device includes a processor for receiving the command from the bluetooth hands-free device, wherein the bluetooth hands-free device transmits the command for requesting the state report of the mobile phone; providing the state report of no available service to the bluetooth hands-free device when detecting that a first subscriber identification card and a second identification card in the mobile phone are not accessed into any network; providing the state report of available service to the bluetooth hands-free device when detecting that at least one of the first subscriber identification card and the second identification card in the mobile phone are accessed into the network. The method and the system for operating the bluetooth hands-free device can effectively operate the interaction of the bluetooth hands-free device and the subscriber identification card.