Quectel EC20 enable hot-swap function of SIM card

IoT Modules LTE Standard Module
1

Hi,
I am having one query related to EC20 Module.
To enable hot-swap function of SIM card I am using below commands,
AT+QSIMSTAT=1
AT+QSIMDET=1,1

I am not getting any interrupt, when i insert the SIM card again after removing. if i checked with below command sim inserted status is 0.
AT+QSIMDET? (SIMCARD INSERTED)
+QSIMDET: 1,0
OK
When i removed the SIM card it shows only “+CPIN:NOT READY” this, no any status about “QSIMSTAT”.

Voltage and status of SIM_PRESENCE pin is normal. Firmware version checked with ATI command.
Quectel
EC20F
Revision: EC20CEFILGR06A03M1G

Please help me, why i am not able to get any interrupt for sim inserted and removed activity.

Thanks,
Sadhana

2

Hi Sadhana
The use of SIM card hot swap requires hardware circuit support, and the SIM_DET pin level needs to change before and after the card is inserted.
image

3

Hi Yang,
Thank you for the update on this, I will check from my side.

Regards,
Sadhana