The specification describes systems, and operation of systems, that allows a parent or other responsible party to monitor the mobile device activities of a child. In addition, it optionally allows the parent to dynamically control the mobile device activities of the child. It relies on software, or a network adjunct, that links a mobile device to a station set or mobile phone under the control of the parent. Calling traffic to and from the mobile device may be routed to a receiver at a location monitored by the parent. In preferred embodiments, software is designed to allow the parent to intervene in the communications of the child. The intervention may take a variety of forms, such as interrupting a call in progress, terminating all call activity, interrupting or terminating Internet access. Where the mobile device is provided with pre-programmed restraining software, the intervention may be to modify the restraining software to add new restraints.