A method of performing network personalization on a mobile device by a specific smartcard, comprising: acquiring a mobile country code, MCC, and a mobile network code MNC, indicated in an international mobile subscriber identity elementary file EF IMSI' of the specific smartcard; acquiring a service provider name, SPN, indicated in a service provider name elementary file, EF SPN ' of the specific smartcard; determining whether a pre-personalization check is successful, the pre-personalization check comprising: verifying that the mobile device has not been network personalized before performing a booting process; and verifying that the MCC, the MNC and the SPN acquired from the specific smartcard is a subset of an existing personalization code of the specific smartcard; storing the MCC, the MNC and the SPN acquired from the specific smartcard in the mobile device as feature data after determining that the pre-personalization check is successful; the method further comprises the steps of: accessing an international mobile subscriber identity elementary file and a service provider name elementary file of a currently inserted smartcard of the mobile device during the booting process; the mobile device entering a normal mode when determining that the accessed international mobile subscriber identity elementary file and the accessed service provider name elementary file of the currently inserted smartcard matches the feature data; and the mobile device entering a restricted mode when determining that the accessed international mobile subscriber identity elementary file and the accessed service provider name elementary file of the currently inserted smartcard does not match the feature data, wherein the mobile device is configured to perform more functions in the normal mode than in the restricted mode. acquiring a mobile country code, MCC, and a mobile network code MNC, indicated in an international mobile subscriber identity elementary file EF IMSI' of the specific smartcard; acquiring a service provider name, SPN, indicated in a service provider name elementary file, EF SPN ' of the specific smartcard; determining whether a pre-personalization check is successful, the pre-personalization check comprising: verifying that the mobile device has not been network personalized before performing a booting process; and verifying that the MCC, the MNC and the SPN acquired from the specific smartcard is a subset of an existing personalization code of the specific smartcard; verifying that the mobile device has not been network personalized before performing a booting process; and verifying that the MCC, the MNC and the SPN acquired from the specific smartcard is a subset of an existing personalization code of the specific smartcard; storing the MCC, the MNC and the SPN acquired from the specific smartcard in the mobile device as feature data after determining that the pre-personalization check is successful; the method further comprises the steps of: accessing an international mobile subscriber identity elementary file and a service provider name elementary file of a currently inserted smartcard of the mobile device during the booting process; the mobile device entering a normal mode when determining that the accessed international mobile subscriber identity elementary file and the accessed service provider name elementary file of the currently inserted smartcard matches the feature data; and the mobile device entering a restricted mode when determining that the accessed international mobile subscriber identity elementary file and the accessed service provider name elementary file of the currently inserted smartcard does not match the feature data, wherein the mobile device is configured to perform more functions in the normal mode than in the restricted mode. accessing an international mobile subscriber identity elementary file and a service provider name elementary file of a currently inserted smartcard of the mobile device during the booting process; the mobile device entering a normal mode when determining that the accessed international mobile subscriber identity elementary file and the accessed service provider name elementary file of the currently inserted smartcard matches the feature data; and the mobile device entering a restricted mode when determining that the accessed international mobile subscriber identity elementary file and the accessed service provider name elementary file of the currently inserted smartcard does not match the feature data,