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.

Methods and systems for sharing data usage by a plurality of SIM cards at a plurality of network devices are disclosed. Each of the plurality of network devices is capable of housing at least one SIM card from the plurality of SIM cards. The method comprises the steps of determining the total data usage allowance. A remaining total data usage allowance is determined by either retrieving it from a carrier server or by subtracting aggregated data usage information from the total data usage allowance. The method further comprises restricting use of one or more of the plurality of SIM cards when the remaining total data usage allowance is below a first threshold until the remaining total data usage allowance is above the first threshold. The total data usage allowance is changed to a first value periodically or according to an administrator's instruction.

An apparatus for measuring and displaying Internet traffic of a mobile device, which includes a traffic measurement module and a traffic display module. The apparatus also includes a SIM card account creation module configured to create a SIM card account for each of a plurality of SIM cards. The traffic measurement module measures the Internet traffic of each of the SIM card accounts. The traffic display module displays the Internet traffic of each of the SIM card accounts. The Internet traffic of each SIM card on the mobile device may be measured and displayed.

The disclosure provides a system and method for metering on a prepaid wireless access point the amount of data transferred between a wireless device and the Internet and inhibiting further data transmission when the amount of prepaid data available reaches or drops below a pre-determined threshold. Specifically, the wireless access point includes a metering client to track one of data usage or an amount of prepaid data available. When the metering client indicates that the amount of data available has dropped below a pre-determined threshold, the wireless access point inhibits further data transmission.

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.

Aspects of the subject disclosure may include, for example, determining a credential of a first subscribed service, responsive to authentication of a user device within a first communication network. Authentication of the user with respect to the first service is facilitated and, in response, a second subscribed service is identified. A notification is provided to an access control function that the user device is granted access to the second subscribed service. The credential is stored in a common authentication repository accessible by the first and second subscribed services. An inquiry from a second communication network is determined in response to the user device requesting authentication there. A second notification is provided to the second communication network that the user device has already been authenticated, allowing the user device to access the services without further authentication. Other embodiments are disclosed.

A core network for mobile communication system is provided. The core network includes a first network function (NF) element, a second NF element, and an operations, administration and maintenance (OAM) element. The OAM element periodically transmits a resource quota status message to the second NF element to obtain a count number of the resource of first NF element and a limit value of the count number via the second NF element, and adjusts the limit value of the resource of the first NF element according to the count number and the limit value of the resource of the first NF element.

Systems and methods are provided for charging for resource usage by an Internet of Things (IoT) device. The method includes: creating a subscription for the IoT device; estimating, based at least in part on the subscription, a number of event notifications associated with resource usage by the IoT device expected over a period of time; transmitting a first message including the number of estimated event notifications associated with resource usage by the IoT device expected over the period of time towards an Online Charging System (OCS); and transmitting a second message including an actual number of event notifications associated with resource usage by the IoT device over the period of time towards the OCS.

An operation method of a session management function (SMF) is provided. The method includes the steps of transmitting a request message to a user plane function (UPF) on the basis of the UPF and a session configuration, receiving a response message from the UPF, determining whether there is a lost usage amount on the basis of the response message, and, when there is a lost usage amount, transmitting recovered usage amount information to an online charging system (OCS), wherein the response message may include current usage amount information and cumulative usage amount information of the UPF.

The present invention discloses methods and systems for sharing data usage by a plurality of SIM cards at a plurality of network devices. Each of the plurality of network devices is capable of housing at least one SIM card from the plurality of SIM cards. The method comprises the steps of determining the total data usage allowance. A remaining total data usage allowance is determined by either retrieving it from a carrier server or by subtracting aggregated data usage information from the total data usage allowance. The method further comprises restricting use of one or more of the plurality of SIM cards when the remaining total data usage allowance is below a first threshold until the remaining total data usage allowance is above the first threshold. The total data usage allowance is changed to a first value periodically or according to an administrator's instruction.