A mobile device providing integrated management of message information and service provision through artificial intelligence is disclosed. The mobile device includes an integrated message management unit comprising a message monitoring unit configured to monitor voice call information and text message information in association with the voice call management part and the text message management part, a message information managing unit configured to generate integrated message information, which is to be provided to a user, based on the voice call information and the text message information, an interface managing unit configured to generate an integrated message management user interface displaying the integrated message information, and an artificial intelligence agent analyzing the voice call information and the text message information and providing a service associated with at least one additional function in association with the additional function process part based on the analyzed result.