Internet connecting method for mobile communication terminal

The present invention includes the steps of transmitting a user authentication information to the service server based on the log in the selection of the user relates to the Internet access method in a mobile communication terminal; The method comprising: maintaining a login state receives the authentication credentials from the service server; And confirming whether or not the service log out from the server; Receiving the contact information of the other clients from the service server maintaining a login state with the same information as the user authentication information; Confirming whether or not on the basis of the contact information of the other client, the other client that the service log out from the server; When the other client is logged out from the service server, by sending credentials to the server, characterized by including the step of requesting a login. As a result, even if the case of using by maintaining the login state to the service server, the use of instant messenger services available (Instant Messenger, IM) service, etc., the client for the service connection change can easily keep the continuity of service.