A method for configuring a mobile communication terminal performed by the mobile communication terminal, the method comprising: transmitting, by the mobile communication terminal, an information provision request message to an information provision entity, wherein the information provision request message comprises a mobile identity of the mobile communication terminal, a network type, location information of the mobile communication terminal, a security value, and a security credential; and receiving, by the mobile communication terminal, information for use in connection of the mobile communication terminal from the information provision entity, wherein the information for connection of the mobile communication terminal comprises a unique identifier of the mobile communication terminal comprising at least one of an international mobile subscriber identity, IMSI, and a mobile station international subscriber directory number, MSISDN, and a first security key as a master key for use in generating a second security key necessary for the mobile communication terminal to connect to a mobile communication system, characterized in that the location information included in the information provision request message is used to determine a mobility management entity, MME, a mobile switching center, MSC, or a tracking area which provides service to the mobile communication terminal, wherein the security value included in the information provision request message is used by the mobile communication terminal to verify that a message received as a response to the transmitted information provision request message originates from a trusted node, and wherein the security credential included in the information provision request message is used to verify a validity of the mobile communication terminal in a universal subscriber identity module, USIM, authentication center. transmitting, by the mobile communication terminal, an information provision request message to an information provision entity, wherein the information provision request message comprises a mobile identity of the mobile communication terminal, a network type, location information of the mobile communication terminal, a security value, and a security credential; and receiving, by the mobile communication terminal, information for use in connection of the mobile communication terminal from the information provision entity, wherein the information for connection of the mobile communication terminal comprises a unique identifier of the mobile communication terminal comprising at least one of an international mobile subscriber identity, IMSI, and a mobile station international subscriber directory number, MSISDN, and a first security key as a master key for use in generating a second security key necessary for the mobile communication terminal to connect to a mobile communication system, characterized in that the location information included in the information provision request message is used to determine a mobility management entity, MME, a mobile switching center, MSC, or a tracking area which provides service to the mobile communication terminal, wherein the security value included in the information provision request message is used by the mobile communication terminal to verify that a message received as a response to the transmitted information provision request message originates from a trusted node, and wherein the security credential included in the information provision request message is used to verify a validity of the mobile communication terminal in a universal subscriber identity module, USIM, authentication center.