The invention relates to a mobile terminal, and in particular to a method for after service of a mobile terminal which is adapted to optimize the performance of the mobile terminal. The method comprises the steps of: self-diagnosing, judging if the terminal malfunctions and connecting with the A/S center in the mobile terminal; requesting from the A/S center state information for indicating the operated condition to the mobile terminal; transmitting from the mobile terminal the stated information thereof according to the request; analyzing the transmitted state information and transmitting control information; and correcting the operated condition of the mobile terminal according to the transmitted control information. According to the method for after service of the mobile terminal, the inconvenience of the user to visit the A/S center can be reduced.