Patent ID: 8249581

Claim:
A method for testing working states of a subscriber identity module card communicating through a mobile phone, the method comprising: dialing non-emergency phone numbers to test a first working state of the mobile phone, wherein if non-emergency phone numbers can be connected, the mobile phone is in the first working state; switching the mobile phone from the first working state to a second working state automatically by a switch module of the mobile phone, wherein the switching the mobile phone from the first working state to the second working state comprises shielding communication signals of the subscriber identity module card in the mobile phone, wherein the subscriber identity module card is in the mobile phone during the switching from the first working state to the second working state; dialing the non-emergency phone number to test the working state of the mobile phone, wherein if the non-emergency phone number cannot be connected, the mobile phone is in the second working state, wherein the non-emergency phone number is predefined in the mobile phone; switching the mobile phone from the second working state to the first working state automatically by the switch module; and dialing the non-emergency phone number to test the working state of the mobile phone, wherein if the non-emergency phone number can be connected, the mobile phone has been successfully switched to the first working state; wherein all the steps are repeated a predefined number of times.