According to various embodiments, an electronic device may comprise at least one processor, and an RF circuit configured to process a data packet associated with a first SIM connected to the at least one processor and a data packet associated with a second SIM connected to the at least one processor. The at least one processor may be configured to: establish a first PDU session corresponding to the first SIM, establish a second PDU session corresponding to the second SIM, store first information for the first PDU session, based on a network slice type of the first PDU session being a specified first type, and process a first data packet associated with the first SIM using the RF circuit while deferring execution of an operation associated with the second SIM based on a processing request for the first data packet associated with the first SIM corresponding to the stored first information.