Aspects of the disclosure are related to a method, apparatus and system for determining whether mobile network functions of a locked device are to be permitted to operate, comprising: retrieving an IMS “IP Multimedia Subsystem” Private User Identity (IMPI) stored on a Universal Integrated Circuit Card (UICC) installed in the locked device; determining whether a configured condition relating to the IMPI stored on the UICC is met; and permitting the mobile network functions of the locked device to operate in response to determining that the configured condition is met.
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