Auxiliary Apparatus for Dual SIM Call Relay
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Solution Overview
Problem
Dual-network dual-standby mobile phones often miss incoming calls and short messages due to one SIM card being turned off when another is in use, and existing hardware modifications like dual-pass systems are costly and require separate call forwarding, leading to incomplete call forwarding solutions.
Innovation Solution
An auxiliary apparatus registers with the network using an idle SIM card slot, receives incoming call information for a deactivated SIM card, and relays it to the host apparatus, allowing simultaneous use of both SIM cards without hardware modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dual-network dual-standby mobile phones use single-pass mode, then one SIM card can be used for calling, but the other SIM card is turned off causing missed calls and messages
Solution Approach 1:
The patent introduces an auxiliary apparatus as an intermediary device that receives incoming call information from the network for the deactivated SIM card and relays it to the host apparatus. This mediator enables the deactivated SIM card to indirectly receive calls without interfering with the active SIM card's communication, resolving the contradiction between maintaining call reliability and enabling dual SIM simultaneous usage.
2Adaptability or versatility
If hardware is modified to support dual-pass (2T2R), then both SIM cards can send and receive data simultaneously, but hardware costs and complexity increase
Solution Approach 1:
The patent creates a virtual copy of the deactivated SIM card's communication capability through the auxiliary apparatus. Instead of modifying physical hardware to support simultaneous dual SIM communication, the system creates a software-based communication channel that replicates the functionality of a second active channel, thereby achieving dual-pass capability without hardware modifications.
Solution Approach 2:
The patent replaces the mechanical/hardware-based solution (modifying antennas and radio frequency components to support 2T2R) with a software-based communication protocol. The auxiliary apparatus uses data transmission over existing communication channels to achieve what would traditionally require physical hardware modifications, thereby reducing device complexity while maintaining adaptability.
3Reliability
If call forwarding is used for deactivated SIM card, then incoming calls can be redirected, but call forwarding costs and incomplete solution remain
Solution Approach 1:
The patent extracts the call reception functionality from the traditional call forwarding mechanism. Instead of using the network's call forwarding service which incurs costs, the system directly receives incoming call information through the auxiliary apparatus and relays it to the host apparatus, eliminating the need for paid call forwarding services while maintaining reliable incoming call reception.
Data Source
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AI summary
This application relates to a method and system for avoiding missing a call, an electronic device, and a storage medium. The method includes: establishing, by a host apparatus, a call connection between a first SIM card and a network in response to first incoming call information that is sent by the network and that is received by the first SIM card or in response to outgoing call information that is sent by the first SIM card to the network, and sending a network registration instruction to an auxiliary apparatus; registering, by the auxiliary apparatus, with the network by using a modem in response to the network registration instruction; after completing network registration, receiving, by the auxiliary apparatus, second incoming call information that is sent by the network to a second SIM card of the host apparatus; displaying, by the auxiliary apparatus, an incoming call interface in response to the second incoming call information, and sending the second incoming call information to the host apparatus; and displaying, by the host apparatus, an incoming call interface in response to the second incoming call information sent by the auxiliary apparatus. In this application, the host apparatus receives, by using the auxiliary apparatus, the second incoming call information of the second SIM card that is sent by the network to the host apparatus, so that the host apparatus avoids missing a call record of a call from the network to the second SIM card.