| 摘要 |
A cellular telephone device includes: a synchronization unit that establishes synchronization with a base station of a CDMA system beforehand to obtain synchronization information for establishing synchronization with the base station; a storage unit that stores the synchronization information; and a switching unit that establishes synchronization with a base station in a calling zone of the CDMA system corresponding to a calling zone of an LTE system based on the synchronization information, in a case in which a communication request occurs in the CDMA system in a state where a location registration is performed in the LTE system. |
