I am writing to report an issue with the Quectel EC200AC module. The same SIM card was tested on two different modules, and one of them fails to work with the SIM.
1. Issue Summary
-
Same SIM card, same test conditions.
-
Module Type 1 does not work with the SIM card.
-
Module Type 2 works normally with the same SIM card.
2. Module Details
Type 1 – Not working with SIM:
text
+CFUN: 1
+CPIN: NOT READY
AT+GMR
EC200ACNHAR01A07M16
OK
AT+CSUB
SubEdition: V03
OK
Type 2 – Working normally with SIM:
text
+CFUN: 1
+CPIN: READY
+QUSIM: 1
+QIND: SMS DONE
+QIND: PB DONE
AT+GMR
EC200ACNHAR01A11M16
OK
AT+CSUB
SubEdition: V01
OK
3. Initial Observation
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Type 1 runs firmware EC200ACNHAR01A07M16 (SubEdition V03) and returns
+CPIN: NOT READY, meaning the SIM is not detected. -
Type 2 runs firmware EC200ACNHAR01A11M16 (SubEdition V01) and detects the SIM normally.
-
This strongly suggests the issue is related to the firmware version on Type 1.
4. Request
Could you please check and provide the latest firmware available for the EC200AC module (preferably equivalent to or newer than EC200ACNHAR01A11M16) so I can update the Type 1 modules and re-test?
If you need any additional logs, AT commands, or further information, please let me know and I will provide them promptly.
Thank you for your support.