Hi, I have a problem setting up dual sim mode (dsds). I have successfully set up dsss mode but I am unable to set up dsds mode.
My version:EC200UEUAAR03A02M08
Dear @shahin_bahrami ,
Thank you for reaching out.
For EC200U-EU (EC200UEUAAR03A02M08), DSDS is not supported on all firmware builds. If you can only enable DSSS, it usually means your current firmware only allows SSSS ↔ DSSS and cannot switch to DSDS.
Please check the following:
Confirm HW supports SIM2 (SIM2 is optional on some designs; ensure SIM2 pins are actually wired).
Query mode support: AT+QDSTYPE?
Enable dual-SIM function first (DSSS prerequisite on EC200U):
AT+QDSIMCFG=“dsss”,1
AT+CFUN=1,1 (reboot)
If DSDS is still not available / AT+QDSTYPE= rejects, you will need a special DSDS-supporting firmware from Quectel Technical Support for your exact project.
After DSDS is supported, you can verify dual-SIM behavior using:
AT+QDSIMI? (IMSI), AT+QDSCCID? (ICCID), AT+QDSEREG? (LTE reg).
Best Regards,
Aghelan