Abstract: An electronic device is provided. The electronic device includes at least one processor that is configured to execute a first application in an REE, to execute a second application in a TEE, and to execute an agent that performs data transmission between the first application and the second application, a communication circuit configured to communicate with a server, and a secure memory area that is accessible by the TEE. The at least one processor is configured to obtain a random value from the server, to transmit a response message including the random value to the server through the communication circuit, to receive encrypted SIM data from the server, to obtain a SIM profile from the encrypted SIM data using a private key corresponding to the public key, and to store the obtained SIM profile in the secure memory area.

Abstract: An electronic device is provided. The electronic device includes at least one processor that is configured to execute a first application in an REE, to execute a second application in a TEE, and to execute an agent that performs data transmission between the first application and the second application, a communication circuit configured to communicate with a server, and a secure memory area that is accessible by the TEE. The at least one processor is configured to obtain a random value from the server, to transmit a response message including the random value to the server through the communication circuit, to receive encrypted SIM data from the server, to obtain a SIM profile from the encrypted SIM data using a private key corresponding to the public key, and to store the obtained SIM profile in the secure memory area.

Abstract: Disclosed is a time setting method and apparatus for use in a mobile communication terminal. The mobile communicates terminal transmits a short message to a short message service center (SMSC). When receiving a short message service (SMS) status report message indicating if a destination side has received the short message, the mobile communication terminal extracts short message reception time information of the SMSC included in the SMS status report message. The mobile communication terminal sets a time of the mobile communication terminal on a basis of the reception time information.

Abstract: Disclosed is a time setting method and apparatus for use in a mobile communication terminal. The mobile communicates terminal transmits a short message to a short message service center (SMSC). When receiving a short message service (SMS) status report message indicating if a destination side has received the short message, the mobile communication terminal extracts short message reception time information of the SMSC included in the SMS status report message. The mobile communication terminal sets a time of the mobile communication terminal on a basis of the reception time information.