The various embodiments herein provide a method and system for advertising on a user screen of a mobile communication device. The method comprising of installing a cell broadcasting system (CBS) application in the mobile communication device, uploading at least one advertisement on a portal, sending the uploaded advertisement to a cell broadcast system and transmitting the uploaded advertisement to the communication device. The CBS application provides for receiving and displaying at least one advertisement on the user screen. The system comprising a cell broadcast manager to receive at least one advertisement from a plurality of cell broadcast entities, a cell broadcast system to store the at least one advertisement, a plurality of base station controllers, a cell broadcast centre to address an appropriate base station controller for processing the requests and one or more base transceiver stations for transmitting the uploaded advertisement to the mobile communication device.