Not allowed to obtain the IMSI at an GL865?

3 thoughts on “Not allowed to obtain the IMSI at an GL865?

  1. Hello Guys!

    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:

    AT#QSS?

    #QSS: 0,1

    OK
    AT+CPIN?

    +CPIN: SIM PIN

    OK
    AT+CPIN=6798

    OK
    AT+CPIN?

    +CPIN: READY

    OK
    AT+CIMI?

    +CME ERROR: operation not supported

    Maybe anyone has an answer for me.

    Thank you in advanced!

    1. What is your SIMIN pin and #SIMDET configuration? What if you read IMSI later, some time after PIN input?

      1. 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,

        Best Regards!