Wait4Call is an as-a-service solution of digital audio advertising for mobile operators, that makes profitable a lost time, such as the smartphone call waiting time, by broadcasting during this “short time” an audio adv. Thanks to our solution, you empower and make profitable your own App due to a media channel that allows to sell advertising spaces through a programmatic system. You can easily integrate our solution by means of a personalized SDK and have at disposal a back end for managing several functionalities such as the possibility to directly broadcast to your customers targeted and geolocated adv both in audio format (during a phone call waiting time) and video format (on the App). Moreover, you can reward customers for listening to the adv and let them spend the credit only in your own marketplace. Wait4Call is the best tool to increase engagement and drive revenue.