A method and an apparatus are provided in which wireless communication is performed through a mobile network. User selection of a hot key enables automatic synchronization of data in a mobile terminal with a web server upon entry into a wireless local area network (LAN) service area. A user ID and password are transmitted to the web server for. A type of data is set to be automatically transmitted based on a user selection. Upon the mobile terminal entering the wireless LAN service area and connecting to the web server, the data is automatically transmitted to the web server. The transmission of the data is stopped and a warning message is displayed, upon the mobile terminal exiting the wireless LAN service area. Upon the mobile terminal re-entering the wireless LAN service area, transmission of the data is automatically resumed from a point where the transmission was stopped, without reauthentication.