Abstract: The present disclosure generally relates to an application for displaying advertisements. The application resides on a mobile device or an electronic device with mobile networking capability and is in communication with a user database mediation server and an advertisement inventory server. The application and associated servers are adapted to acquire users' permission to automatically display advertisements on the incoming call screen of their electronic device, connect users who wish to view advertisements on their electronic device whenever they receive a call from one another, download an advertisement to a contact image record of a users' electronic device address book, display a contact record, and credit users for the calls that they place to other users which result in the display of an advertisement on the other user's electronic device. Related systems and methods are described.