Hi my sim is not detected in an EP06 module I’m wondering is it is related to firmware installed on the module or is there some other possible reason?
root@OpenWrt:~# socat - /dev/ttyUSB2,crnl
at
OK
AT+CMEE=2
OK
AT+cpin?
+CME ERROR: SIM not inserted
Thanks for your query in Quectel forums.
- Check if the SIM card is inserted reversely. There are many types of SIM card holders on the market, and some SIM card holders do not have foolproof marks.
- Replace the SIM card that is confirmed to be normal. The SIM card may be damaged during long-term insertion and removal.
- Press the SIM card holder to prevent poor contact between the SIM card holder shrapnel and the SIM card.
Thanks.