Roaming usage management apparatus for managing roaming mobile devices connected to roaming networks. The management apparatus includes a data gathering application for gathering roaming activity data, a database application, which aggregates the records into activity logs of calls per roaming device, and an output unit which sends outputs to or concerning respective roaming devices, in order to manage them based on activity levels or kinds of activity recorded in the logs. The embodiments thus provide management of roaming devices. The management is per roaming device, preferably real time, and may be used to leverage takeup of roaming services.