Multi-SIM Mobile Terminal Automatic SIM Selection for Text Messaging

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Solution Overview

Problem

Conventional multi SIM mobile terminals require users to switch SIMs to access cheaper text message sending services, causing inconvenience and increased costs due to reliance on specific mobile communication service provider networks.

Innovation Solution

A method and apparatus that determine the responsible SIM among multiple SIMs in a multi SIM mobile terminal and send text messages through the corresponding mobile communication service provider network, allowing users to select the cost-effective network for sending messages.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If users switch SIMs to access cheaper text message sending services, then sending costs are reduced, but user convenience deteriorates due to frequent SIM changes

Engineering Contradiction:

Improvesending costsVSAvoiduser convenience

Core Design Contradiction:

Loss of energyVSEase of operation

Solution Approach 1:

The system automatically determines which SIM is responsible for sending text messages and selects the appropriate mobile communication service provider network without requiring user intervention. The controller autonomously manages SIM selection and network switching based on message destination and service agreements, eliminating the need for manual SIM changes while optimizing sending costs.

Inventive Principle:

Principle #25Self-service

2Loss of energy

If users manually switch SIMs to use cost-effective networks, then sending costs are reduced, but operational complexity increases

Engineering Contradiction:

Improvesending costsVSAvoidoperational complexity

Core Design Contradiction:

Loss of energyVSDevice complexity

Solution Approach 1:

The controller acts as an intermediary that manages the complexity of multi-SIM and multi-network coordination. It automatically determines the responsible SIM, selects the appropriate mobile communication service provider network, and handles all switching operations transparently, shielding the user from operational complexity while optimizing sending costs.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If the terminal uses the currently maintained SIM network, then network stability is maintained, but sending costs increase when cheaper alternatives are available

Engineering Contradiction:

Improvenetwork stabilityVSAvoidsending costs

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The system dynamically switches between different mobile communication service provider networks based on real-time conditions such as message destination, service agreements, and cost considerations. The controller adaptively determines the responsible SIM and selects the most appropriate network for each sending operation, maintaining reliability while optimizing costs.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS8914065B2Method and apparatus for sending text message in multi subscriber identity module mobile terminal

Publication Date: 2014.12.16 SAMSUNG ELECTRONICS CO LTD

AI summary

A method and apparatus for sending a text message in a multi Subscriber Identity Module (SIM) mobile terminal are provided. The method includes determining a SIM which is responsible for sending the text message among a plurality of SIMs and sending the text message through a mobile communication service provider network corresponding to the SIM determined to be responsible for sending the text message.