A layered security suite is disclosed wherein multiple security barriers that prevent the unsanctioned use of a mobile device issued by a controlled-environment facility. The security barriers are implemented along multiple points within the communication path between the mobile device with outside networks, including on the mobile device, on wireless access points that serve data traffic for the mobile device, and a firewall device that monitors all data coming to and from the wireless access points. The barriers on the mobile device prevent the user from performing unsanctioned application and settings changes, including both software and hardware components, while the barrier on the wireless access point detects and prevents unauthorized connections between mobile devices and unsanctioned wireless access points. The firewall device discards packets with unsanctioned internet addresses. The layers work in concert to prevent all manner of tampering with the mobile device by members of the controlled-environment facility.