SIM Lock Status Detection for Multi-SIM Usability
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Solution Overview
Problem
Portable electronic devices with multiple SIM cards are unable to use communication services until all SIM locks are released, limiting usability when only some SIM cards are deactivated.
Innovation Solution
An electronic device with a display, processor, and memory that identifies and displays the status of SIM locks on multiple subscriber identification modules, allowing users to configure and release SIM locks independently through a touchscreen interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SIM lock is configured for all subscriber identification modules, then security control is improved, but device usability deteriorates because communication services cannot be used until all SIM locks are released
Solution Approach 1:
The patent segments the SIM lock management by identifying and treating each subscriber identification module independently. The system determines which specific SIM cards have SIM locks configured and which do not, allowing differentiated handling. This enables the device to provide communication services through SIMs without locks while maintaining security control over locked SIMs, resolving the contradiction between security and usability.
2Reliability
If the device requires all SIM locks to be released before allowing communication service usage, then security is maintained, but operational flexibility deteriorates
Solution Approach 1:
The patent applies local quality by implementing different access rights for different SIM cards based on their individual lock status. Instead of a uniform requirement that all SIM locks must be released, the system allows communication services to be used through specific SIMs that have SIM locks released, while maintaining lock status for other SIMs. This localized approach maintains security where needed while providing operational flexibility where appropriate.
3Ease of operation
If the device displays a unified interface for SIM lock management, then user convenience is improved, but information clarity deteriorates when multiple SIMs have different lock statuses
Solution Approach 1:
The patent segments the SIM lock management interface to display different information based on the lock status of each subscriber identification module. The system identifies which SIMs have SIM locks configured and which do not, then presents this differentiated information to the user. This segmented approach maintains user convenience through a unified interface structure while preserving information clarity by showing the specific lock status of each SIM card.
Data Source
AI summary
Various embodiments of the present invention relate to an electronic device for recognizing a SIM card. The electronic device may comprise: a display; a SIM card including at least one subscriber identification module; a processor electrically connected to the display and the SIM card; and a memory electrically connected to the processor, wherein in the memory stores instructions which, when executed, cause the processor to: identify whether a SIM lock is activated or not, on the basis of the at least one subscriber identification module included in the SIM card; and when it is identified that at least one subscriber identification module, the SIM lock of which has been deactivated, display a screen corresponding to the subscriber identification module, the SIM lock of which has been deactivated. Another embodiment is possible.