Patent ID: 8018865

Claim:
A method for a GSM (global system for mobile telecommunication) and CDMA (code division multiple access) dual-mode mobile phone to control two GSM subscriber identification modules which are of a first GSM subscriber identification module and a second GSM subscriber identification module, comprising: initializing an operation system of the mobile phone; determining whether a standby mode is going to be entered by the second GSM subscriber identification module of a CDMA control module; when the standby mode is not going to be entered by the second GSM subscriber identification module, the first GSM subscriber identification module entering the standby mode and a GSM control module being used to control the first GSM subscriber identification module connected therein; when the standby mode is going to be entered by the second GSM subscriber identification module, the second GSM subscriber identification module entering the standby mode accordingly, a CDMA UART (universal asynchronous receiver/transmitter) driver module and a SIM (subscriber identification module) and UIM (user identity module) driver module connected with each other being built in a CDMA device driver layer; and the CDMA UART driver module in communication with a GSM device driver layer of the GSM control module through a UART standard being used to control the second GSM subscriber identification module in connection with the SIM and UIM driver module.