When it is determined to perform the handover to the second communication network (e.g., the 4G network), the processor 120 may indicate the handover to the second communication network to the wireless communication module 192. When the handover to the second communication network is indicated, the wireless communication module 192 may identify whether there is data transmitted and received through the first communication network. When there is no data transmitted and received through the first communication network, the wireless communication module 192 may perform a handover to the second communication network. When there is data transmitted and received through the first communication network, the wireless communication module 192 may perform a handover to the second communication network after completing transmission and reception of the data using the first communication network. For example, when there is no data transmitted and received through the first communication network for a certain time period (e.g., 10 seconds), the wireless communication module 192 (e.g., the first CP 220 or the second CP 230) may perform a handover to the second communication network.