Mobile Phone SIM Data Copying for Locked Secondary Cards
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Solution Overview
Problem
Users are unable to access the telephone directory or send messages using a secondary SIM card when it is locked out, due to restrictive SIMLock technology that uniformly controls mobile phone functions based on a white list of operators, causing inconvenience and limiting the use of dual-card and dual-standby technologies.
Innovation Solution
A data processing method for a mobile phone that copies and labels data from a secondary SIM card, allowing it to be used even if locked out, by comparing SIM card IDs with pre-stored determination data and providing user choice to copy data to the primary SIM card or both, enabling access to phone numbers and messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SIMLock technology is implemented to control mobile phone functions based on a white list of operators, then operator control and network security are improved, but user accessibility and function availability deteriorate when using secondary SIM cards from different operators
Solution Approach 1:
The patent segments the control mechanism by creating separate functional paths for primary and secondary SIM cards. The primary SIM card is subject to SIMLock verification, while the secondary SIM card operates with relaxed restrictions, allowing directory access and message sending without requiring white-listed operator validation. This segmentation resolves the contradiction by applying different control levels to different SIM slots.
Solution Approach 2:
The patent applies local quality by implementing differential access control policies for different SIM cards based on their slot positions. The primary SIM slot (first SIM card) receives strict SIMLock control, while the secondary SIM slot (second SIM card) receives permissive access control. This localized quality adjustment allows the system to maintain operator control where needed while enabling user accessibility where not required.
2Reliability
If SIMLock technology restricts functions based on white list verification, then network security and operator policy enforcement are improved, but device functionality and service availability deteriorate for locked-out SIM cards
Solution Approach 1:
The patent segments functionality by allowing the secondary SIM card to access specific functions (telephone directory, message sending) independently of SIMLock status. While the primary SIM card requires white-listed operator verification for all functions, the secondary SIM card can provide directory access and messaging capabilities even when locked out, thus maintaining device functionality without compromising primary network security.
Solution Approach 2:
The patent applies partial action by implementing SIMLock verification only for the primary SIM card's core communication functions, while allowing the secondary SIM card to provide supplementary functionality (directory access, messaging) without full SIMLock enforcement. This partial verification approach maintains necessary security while preserving overall device adaptability and versatility.
3Ease of operation
If dual-card-dual-standby technology is implemented to allow multiple SIM cards to operate simultaneously, then user convenience and service options are improved, but control complexity and operator policy management deteriorate
Solution Approach 1:
The patent simplifies control complexity by segmenting the dual-SIM management into distinct roles: the primary SIM card handles core communication functions with full SIMLock control, while the secondary SIM card provides supplementary services with relaxed control. This segmentation creates a clear control hierarchy that reduces management complexity compared to applying uniform SIMLock policies to both cards.
Solution Approach 2:
The patent inverts the traditional approach by applying stricter control to the primary SIM card (first slot) rather than the secondary one. Conventionally, secondary slots receive more restrictions, but this patent reverses that logic, allowing the secondary SIM card to operate with fewer restrictions. This inversion simplifies the control architecture by concentrating verification requirements on a single primary card.
Data Source
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AI summary
A mobile phone and a data processing method thereof are disclosed. The method comprises: reading an ID of a secondary SIM card and determining whether the secondary SIM card is locked out; if the secondary SIM card is locked out, then determining whether to copy data of the secondary SIM card according to a user's choice; and if the user chooses to copy the data of the secondary SIM card, then copying the data of the secondary SIM card to the mobile phone or to the primary SIM card of the mobile phone, or to both the mobile phone and the primary SIM card of the mobile phone. The present disclosure allows data such as the telephone directory of the secondary SIM card to be copied to the mobile phone or to the primary SIM card of the mobile phone. Thereby, the problem that the user cannot dial a phone number or send a short message through use of the telephone directory of the secondary SIM card when the secondary SIM card is locked out is solved. This represents great conveniences to the user and facilitates the popularization of services provided by mobile operators.