I am experiencing a strange behavior using a GL865-dual V3. I’m trying to obtain the IMSI of the Sim card connected to the module, but it responses with “operation not allowed”. Is this a bug in the firmware or am I forgetting some command previously? Can the operator prevent me from reading this information.
Here is an excerpt of my communication with the module:
+CPIN: SIM PIN
+CME ERROR: operation not supported
Maybe anyone has an answer for me.
Thank you in advanced!
What is your SIMIN pin and #SIMDET configuration? What if you read IMSI later, some time after PIN input?
Yes, you are right. I totally screwed it up.
Today’s morning I gave it another try and saw that there has to be several seconds between the AT+CPIN and AT+CIMI command. Apperently the GL865 needs some time to read the data from the SIM card. However, now it works flowlessly…
Sorry for bothering all of you,
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