SIM Card Phone Directory Management with Identity Codes
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Solution Overview
Problem
Conventional SIM cards can only store one phone number per contact entry, making it time-consuming and inconvenient to manage multiple phone numbers for the same contact, and data is not easily transferable to new mobile phones.
Innovation Solution
An electronic apparatus with a SIM card that includes a phone directory input unit, SIM card connector, control unit, memory, and record comparison and process unit, allowing users to input and store multiple phone numbers under the same contact name, using identity codes to differentiate between types of phone numbers, and displaying them on the screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple contact entries are created to store multiple phone numbers for the same contact, then multiple phone numbers can be stored, but the phone directory becomes time-consuming to manage and difficult to maintain
Solution Approach 1:
The patent segments the phone number storage by creating multiple phone number fields (first phone number field, second phone number field, etc.) within a single contact entry. This allows multiple phone numbers to be stored separately and systematically under one contact name, eliminating the need to create multiple contact entries and making management more efficient.
2Quantity of substance
If multiple contact entries are created to store multiple phone numbers, then all phone numbers can be recorded, but the process becomes time-consuming
Solution Approach 1:
By segmenting phone number storage into multiple dedicated fields within a single contact entry, the patent allows users to input multiple phone numbers simultaneously during the contact creation process, rather than creating multiple separate entries. This significantly reduces the time required to record multiple phone numbers for the same contact.
3Quantity of substance
If phone numbers are stored only in the mobile phone memory instead of SIM card, then multiple phone numbers can be stored, but data cannot be transferred to a new mobile phone when the SIM card is replaced
Solution Approach 1:
The patent makes the SIM card multi-functional by enabling it to store multiple phone numbers for each contact entry, not just a single phone number. This universal capability allows the SIM card to serve as a complete and portable phone directory that can be easily transferred to any mobile phone, maintaining data accessibility across different devices.
Data Source
AI summary
An electronic apparatus with a subscriber identity module (SIM) card and the phone directory management method thereof are provided. The electronic apparatus allows the user to store a group of phone numbers which belong to the same contact name in the SIM card using specially designed identity codes.


