Patent ID: 7929980

Claim:
A mobile communication device comprising: a receiver for receiving an incoming short message service message; a buffer for storing the incoming short message service message temporarily; a memory for storing a plurality of contact records, each contact record comprising a contact name, a contact phone number, a destination mobile identification number, and a previous received message history, the previous received message history comprising two index numbers “1” and “0”, and the index number “1” indicates that the mobile communication device has previously received another incoming short message service message, while the index number “0” indicates that the mobile communication device has not previously received another incoming short message service message; an identifier for searching the memory for a contact phone number that matches with a source phone number carried in the incoming short message service message; identifying a previous received message history corresponding to the contact phone number if the contact phone number is found; and comparing a unique mobile identification number of the mobile communication device with a destination mobile identification number carried in the incoming short message service message if the index number of the received message history is “0”; and a deleting module for deleting the incoming short message service message if the unique mobile identification number of the mobile communication device is different from the destination mobile identification number of the incoming short message service message.