GROUP CHATTING WITHDRAWL METHOD AND MOBILE TERMINAL THEREOF

摘要

PURPOSE: A group chat quitting method and a mobile device thereof remove a quitting device among those devices participating in a group chat from a group chat history managed by the devices without buffering by utilizing a store and forward server. CONSTITUTION: Device C (100c) participating in a group chat closes the group chat. Device A (100a) transmits an invitation message to an instant messaging (IM) server (200). The IM server transmits the invitation message to device B (100b) and the device C. The device C transmits a reject message as a response to the invitation message to the IM server. The IM server confirms that the device B is offline and stores the fact that the device C has left the group chat service in a store and forward server (300). [Reference numerals] (S501) Group chatting history deleting