Patent ID: 11882614
Assignee: CSL DUALCOM LIMITED
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC H

Claim 25:
26. A universal integrated circuit card (UICC) for controlling radio communications via a radio communications network to and from a host device in which the UICC is installed in use, the UICC comprising:
a microprocessor for controlling the operation of the UICC;
a data store for storing data relating to the operation of the UICC, the data store comprising:
a plurality of mobile operator network profiles including:
an operational profile comprising radio communications network settings for connecting the host device to a first radio communications network; and
a bootstrap profile comprising radio communications network settings for connecting the host device to a second radio communications network; and

a program comprising a plurality of instructions for configuring operation of the UICC; wherein, in use, the microprocessor is configured by the program to:
use the operational profile to connect the host device to the first radio communications network;
detect a loss of operational connectivity with the first radio communications network;
use the bootstrap profile to connect the host device to the second radio communications network to re-establish radio communications to and from the host device;
perform, following use of the bootstrap profile to connect the host device to the second radio communications network, a second radio communications network connectivity test to test the radio communications network connectivity between the host device and the second radio communications network; and return a second connectivity test result based on the radio communications network connectivity test;
determine, based on the second connectivity test result, when a loss of radio communications network connectivity has occurred between the host device and the second radio communications network; and
when such a loss of connection has been determined, to deselect the bootstrap profile and re-select the operational profile and use the operational profile to connect to the first radio communications network based on the network settings of the operational profile in order to re-establish radio communications network connectivity to the host device.