A method for use by a mobile device configured to operate in a wireless network for the communication of data messages with a server is described. The method comprises receiving, at a mobile device, an indication that a pending message is available for retrieval from a host service, and communicating directly with the host service to retrieve the pending message from the host service.

A radio communication device installed on a vehicle of this application comprises a radio communicator configured to perform a radio communication with a plurality of networks, a controller configured to perform location registration or a call origination via each of the plurality of networks, and a storage configured to store location registration results or call origination results for each of the plurality of networks. The controller is configured to select a network affording more favorable results than results of one of the plurality of networks based on the location registration results or call origination results stored in the storage, and perform location registration at a time of an emergency call origination by using the selected network.

A radio communication device installed on a vehicle of this application comprises a radio communicator configured to perform a radio communication with a plurality of networks, a controller configured to perform location registration or a call origination via each of the plurality of networks, and a storage configured to store location registration results or call origination results for each of the plurality of networks. The controller is configured to select a network affording more favorable results than results of one of the plurality of networks based on the location registration results or call origination results stored in the storage, and perform location registration at a time of an emergency call origination by using the selected network.

A lost or stolen mobile electronic device may attempt to attach to a foreign network where the phone is not blocklisted. During the foreign network/roaming attach process, a location update may be sent to the home network. The location update may include identifying information for the device. A mapping of the device and the foreign network's association may be stored within an operator database at the home network. Once the lost or stolen phone authenticates with an access point (AP), the mobile device may associate or register with the AP to gain full access to the foreign MNO. The lost or stolen phone may send an Association Request including updated location information and the phone's identification to the phone's home network. If the mapping does not include the phone's identification and the requesting foreign network, then the home network will deny the association request.

A lost or stolen mobile electronic device may attempt to attach to a foreign network where the phone is not blocklisted. During the foreign network/roaming attach process, a location update may be sent to the home network. The location update may include identifying information for the device. A mapping of the device and the foreign network's association may be stored within an operator database at the home network. Once the lost or stolen phone authenticates with an access point (AP), the mobile device may associate or register with the AP to gain full access to the foreign MNO. The lost or stolen phone may send an Association Request including updated location information and the phone's identification to the phone's home network. If the mapping does not include the phone's identification and the requesting foreign network, then the home network will deny the association request.

Methods and apparatuses are disclosed for network triggered service restoration (NTSR). According to an embodiment, a serving gateway (SGW) obtains, from a mobility management entity (MME), information capable of indicating whether to apply NTSR for a terminal device. In response to detecting a failure of the MME, the SGW determines whether to apply NTSR for the terminal device based on the obtained information.

A terminal for performing an onboarding procedure for remote provisioning through steps of: receiving an onboarding enabled indication from at least one onboarding network; selecting an onboarding network based on the onboarding enabled indication and onboarding network selection information; and attempting registration for the selected onboarding network is provided.

A network repository function (NRF) receives, from an access and mobility management function (AMF), a discovery request for an address of a session management function (SMF), the discovery request comprising network slice isolation information for at least one network slice. The NRF sends, to the AMF and based on the discovery request, a discovery response comprising the address of the SMF.

A method of updating a PDU session and a network-side device are provided. The method includes: after a User Equipment UE moves across PLMNs or across systems, determining that the UE has a first PDU session of which an anchor SMF is not in a current PLMN; determining a Session Management Function V-SMF in a Visited Public Land Mobile Network VPLMN for the first PDU session, and updating the first PDN session by using the V-SMF.

A method of updating a PDU session and a network-side device are provided. The method includes: after a User Equipment UE moves across PLMNs or across systems, determining that the UE has a first PDU session of which an anchor SMF is not in a current PLMN; determining a Session Management Function V-SMF in a Visited Public Land Mobile Network VPLMN for the first PDU session, and updating the first PDN session by using the V-SMF.