您尝试过AT + CSIMSEL = 1吗?

did you try AT+CSIMSEL=1 ?

请参阅本文档中的11.4 AT + CSIMSEL在两个SIM卡之间切换:

see 11.4 AT+CSIMSEL Switch between two SIM card in this document:

http://www. scribd.com/doc/63648056/186/AT-CSIMSEL-在两个SIM卡之间切换

该命令用于选择外部或嵌入式SIM卡.注意

The command is used to select external or embedded SIM card. NOTE

1. 定制支持的嵌入式SIM卡.客户应提供写入USIM芯片组的信息.

1. Embedded SIM card supported by customization. Customer should provide informationwritten into USIM chipset.

如果不存在嵌入式SIM卡(即标准硬件版本)，该命令将被禁用.

The command is disabled if the embedded SIM card isn’t exist, i.e. standard hardwareversion.

定义的值

1 –外部SIM卡

2 –嵌入式SIM卡

2 – embedded SIM card