Method for adding new number of identical contact into subscriber identity module (SIM) card of mobile phone

The invention relates to a method for adding the new number of an identical contact into a subscriber identity module (SIM) card of a mobile phone. In the method, an editable field of contact information is added into an address book if a user stores the address book by using the SIM card, so that the user can add the new number under the identical contact item. By the method, the user can effectively manage a telephone directory of the mobile phone, the user experiences are improved, and the working efficiency is improved.