A method for restoring automatically an original setting in a mobile device is disclosed in which a monitoring module is included, comprising the steps of memorizing a plurality of initial communication settings by the monitoring module when a SIM card is inserted in the mobile device as a spare copy of parameters, examining a plurality of APs parameters stored in the mobile device, comparing the spare copy of parameters and the plurality of APs parameters, and executing automatically an initial setting process on the mobile device and overwriting the plurality of APs parameters stored in the mobile device. As such, the previous basic settings of the mobile device may be rapidly restored in a simple manner and the mobile device may be restored back to a normally state.