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1. (WO2017172436) ADVANCED DEVICE LOCKING CRITERIA

Pub. No.:    WO/2017/172436    International Application No.:    PCT/US2017/023540
Publication Date: Fri Oct 06 01:59:59 CEST 2017 International Filing Date: Thu Mar 23 00:59:59 CET 2017
IPC: H04L 29/06
H04W 8/18
Applicants: T-MOBILE USA, INC.
Inventors: KOVACEVIC, Amela
Title: ADVANCED DEVICE LOCKING CRITERIA
Abstract:
Systems and methods for providing additional control over user equipment (UE) using standardized features of a subscriber identity module (SIM) is provided. The UE can impose SIMLocking criteria based on subscriber related attributes (such as rate plan, prepay, postpay, etc.). The SIM module can comprise multiple unique entries and one value for each entry. One or more entries on the SIM can be subdivided to provide additional values with each value made up of a subset of bits from a particular entry. Thus, a single entry can provide a plurality of values to make up a SIM configuration. The SIM configuration can be compared to a UE SIMLock configuration with the same, or similar, entries to determine if the SIM is compatible for use with the UE. The SIM configuration can be updated dynamically to reflect changes in the account associated with the UE or the SIM.