A dual-card 4g multi-mode mobile terminal and its implementation method

Abstract

This application discloses a method for realizing a dual-card 4G multi-mode mobile terminal. The first SIM card is a 4G multi-mode SIM card, and the second SIM card is not limited. It includes the following steps: Step S102: when the second SIM card enables data services, or When the data service is switched from SIM card 1 to SIM card 2, the mobile terminal asks the user whether to switch the network mode of SIM card 1. Step S104: If the user chooses to switch the network mode of SIM card one, go to step S106; otherwise, go back to step S102. Step S106: The network mode of SIM card 1 is changed from supporting 2G, 3G or 4G mobile communication network to only supporting 2G or 3G mobile communication network. Step S108: When SIM card 1 enables the data service, or the data service is switched from SIM card 2 to SIM card 1, the network mode of SIM card 1 is changed from only supporting resident in 2G or 3G mobile communication network back to supporting resident in 2G, 3G or 4G mobile communication network. The application shortens the call establishment delay of the SIM card one in a specific situation, and improves the call completion rate at the same time.

Description

technical field [0001] The present application relates to a network mode processing method of a dual-card mobile terminal. Background technique [0002] 4G multi-mode mobile phones supporting GSM (Global System for Mobile communications, Global System for Mobile Communications), UMTS (Universal Mobile Telecommunications System, Universal Mobile Communications System) and LTE (Long Term Evolution, long-term evolution technology) have been obtained widely used. However, 4G multi-mode mobile phones still cannot meet the needs of some specific users. For example, users want to have two different phone numbers, or users want to use different services (voice, SMS, Internet services, etc.) of different mobile communication operators at the same time. Therefore, There is also a wide demand for 4G multi-mode mobile phones with dual SIM dual standby (DSDS, Dual SIM Dual Standby) function. [0003] For the convenience of description, in this application document, SIM (subscriber iden...

AI Technical Summary

Problems solved by technology

But at any moment, only one of the voice service or data service can be performed on a certain SIM card.

Among them, the 4G multi-mode SIM card adopts the CSFB (Circuit Switched Fallback) solution to provide voice services, that is, the circuit domain services need to fall back to the 2G or 3G mobile communication network. The SIM card left on the 2G or 3G mobile communication network is longer, and the call completion rate is also low

In addition, the standby power consumption of mobile terminals in 4G mode is larger than that in 2G or 3G mode.

These have affected the user experience of dual-card dual-standby 4G multi-mode mobile phones

Images