SC20 Single SIM configuration

IoT Modules Smart Module
1

Hi all,

I need to turn off dual-SIM support on the SC20 module because our device will only have one SIM slot and we don’t need multi-SIM settings in the system settings. We are running Android 8.1.0 on the SC20.

I tried to change the value of property “persist.radio.multisim.config” from “dsds” to “ssss” or “none” but it doesn’t work. The multi-SIM settings disappeared from the system which is nice, but the SIM card stopped working. The modem does not connect to the mobile network and does not even require entering a PIN code when starting Android. The SIM is inserted in slot 1.

How can I configure the SC20 for single-SIM? Does SC20 support single-SIM configuration?

Thanks.

2

Hi，peter:
SC20 supportes sinagel-SIM.
AT+QCFG=“simconfig” //Query the current setting
AT+QCFG=“simconfig”,1 //Configure single SIM card.

1:SINGLE_SIM 2:DUAL_SIM

3

Thank you for your help, it works!

But I have one more question, can this be configured within the AOSP source codes? We would not like to configure each device via the AT command.

4

Do you need the demo about how to execute the AT command in Android APP?

5

Yes, that would be nice.

7

Single SIM.zip (1.5 KB)
Please check the zip file.
Thanks.

8

Thank you, it helped.