A method and system of detecting a delinquent mobile user device. An international mobile subscriber identity (IMSI) of a subscriber identity module (SIM) card of the user device is determined by the user device. The IMSI is sent to a Remote Recovery Server (RRS). A message is received from the RRS as to whether the IMSI is authorized for the user device. Upon determining that the IMSI is not authorized for the user device, a notification is displayed on a display of the user device.

Disclosed is a voice message exchange system and method for improving communication between an inmate and a third party by enabling the inmate to leave a message when a call is not answered and further allowing the third party who receives the message to reply with a message to the inmate. Additionally, outside parties that meet the institution's requirements can leave messages for inmates at any time. The present invention can be used as an add-on to legacy inmate call management systems or incorporated internally into an inmate call management system. The system also provides monitoring, controlling, recording, and billing means.

Disclosed is a voice message exchange system and method for improving communication between an inmate and a third party by enabling the inmate to leave a message when a call is not answered and further allowing the third party who receives the message to reply with a message to the inmate. Additionally, outside parties that meet the institution's requirements can leave messages for inmates at any time. The present invention can be used as an add-on to legacy inmate call management systems or incorporated internally into an inmate call management system. The system also provides monitoring, controlling, recording, and billing means.

A user device (10) provides a subscriber with access to a network service. The user device (10) determines service-specific key material and charging-specific key material. The user device (10) determines a charging record indicating usage of the network service by the subscriber and associates the charging record with first authentication information based on the charging-specific key material. The user device (10) generates at least one message including the charging record and the associated first authentication information. The user device (10) associates the at least one message with second authentication information based on the service-specific key material. The user device (10) sends the at least one message to a first network node (150) which is incapable of relating the charging-specific key material or the service-specific key material to a subscriber identity of the subscriber. The first network node (150) receives the at least one message and the associated second authentication information from the user device (10) and authenticates the at least one message based on the service-specific key material and the second authentication information. In response to authenticating the at least one message, the first network node forwards the charging record and the associated first authentication information to a second network node (120). The second network node (120) is capable of relating the charging-specific key material to the subscriber identity of the subscriber. The second network node (120) receives the charging record and the associated first authentication information from the first network node (150) and authenticates the charging record based on the charging-specific key material and the first authentication information. In response to authenticating the charging record, the second network node (120) controls charging of the network service.

A user device (10) provides a subscriber with access to a network service. The user device (10) determines service-specific key material and charging-specific key material. The user device (10) determines a charging record indicating usage of the network service by the subscriber and associates the charging record with first authentication information based on the charging-specific key material. The user device (10) generates at least one message including the charging record and the associated first authentication information. The user device (10) associates the at least one message with second authentication information based on the service-specific key material. The user device (10) sends the at least one message to a first network node (150) which is incapable of relating the charging-specific key material or the service-specific key material to a subscriber identity of the subscriber. The first network node (150) receives the at least one message and the associated second authentication information from the user device (10) and authenticates the at least one message based on the service-specific key material and the second authentication information. In response to authenticating the at least one message, the first network node forwards the charging record and the associated first authentication information to a second network node (120). The second network node (120) is capable of relating the charging-specific key material to the subscriber identity of the subscriber. The second network node (120) receives the charging record and the associated first authentication information from the first network node (150) and authenticates the charging record based on the charging-specific key material and the first authentication information. In response to authenticating the charging record, the second network node (120) controls charging of the network service.

A method and system of restoring a functionality of a mobile user device. A lock screen is displayed on the display of the user device. An international mobile subscriber identity (IMSI) of a subscriber identity module (SIM) card presently installed in the user device is determined. The IMSI is sent to a Remote Recovery Server (RRS). A message is received from the RRS indicating whether the IMSI is authorized for the user device and whether an account of the user device is replenished at least in part. Upon determining that the IMSI is authorized for the user device and the account of the user device is replenished at least in part, at least one function that was previously restricted is restored.

A communication conversion system is coupled to a global computer network. A user digital communication is electronically received from at least one remote device. The user digital communication is automatically converted into a formatted user communication according to at least one receiving template. The at least one receiving template is based, at least in part, on at least one correctional receiving requirement. A communications address is automatically selected for a correctional facility from a plurality of communications addresses. The communications address is based, at least in part, on an identifier of an inmate supplied with the user digital communication. The formatted user communication is electronically communicated to a printer with instructions to print at least one printed communication. The at least one printed communication is based, at least in part, on the formatted user communication, and is configured to be delivered to the communications address.

A communication conversion system is coupled to a global computer network. A user digital communication is electronically received from at least one remote device. The user digital communication is automatically converted into a formatted user communication according to at least one receiving template. The at least one receiving template is based, at least in part, on at least one correctional receiving requirement. A communications address is automatically selected for a correctional facility from a plurality of communications addresses. The communications address is based, at least in part, on an identifier of an inmate supplied with the user digital communication. The formatted user communication is electronically communicated to a printer with instructions to print at least one printed communication. The at least one printed communication is based, at least in part, on the formatted user communication, and is configured to be delivered to the communications address.

A communication processing system is coupled to a global computer network. At least one inmate communication from an inmate is automatically converted into an inmate digital communication for communication to at least one remote device. The at least one inmate communication is received at the communication processing system from a correctional facility. At least one side of each of the at least one inmate communication is automatically scanned into at least one digital file. The at least one digital file is automatically converted into the inmate digital communication according to at least one sending template. The at least one sending template is based, at least in part, on at least one formatting requirement of at least one of: the at least one remote device, and a service provider of the at least one remote device. The inmate digital communication is electronically communicated to the at least one remote device.

A communication processing system is coupled to a global computer network. At least one inmate communication from an inmate is automatically converted into an inmate digital communication for communication to at least one remote device. The at least one inmate communication is received at the communication processing system from a correctional facility. At least one side of each of the at least one inmate communication is automatically scanned into at least one digital file. The at least one digital file is automatically converted into the inmate digital communication according to at least one sending template. The at least one sending template is based, at least in part, on at least one formatting requirement of at least one of: the at least one remote device, and a service provider of the at least one remote device. The inmate digital communication is electronically communicated to the at least one remote device.