An electronic device according to an embodiment of the disclosure may include a communication module, a subscriber identification module, and at least one processor. The at least one processor may identify identification information of the subscriber identification module stored in the subscriber identification module when the subscriber identification module is identified as being first inserted, may configure a network service provider based on the identified identification information, may generate a signature by using lock information of the subscriber identification module, may identify network lock information when the signature is identified as being valid, and may set up a network lock function of the communication module based on the identified network lock information.