How to get my SIM7670E module to work?

[goatcs]

Hello,

I have a SIMCOM A7670E module. The module works fine for the regular commands such as -

AT OK

AT+CGSN

867255079802551

OK

AT+CGMR+CGMR: A110B01A7670M7_F

OK

Now, I am trying to get the sim card functionality up and running so as to send an SMS. I have inserted my SIM card into the holder, in the right way. When I query the sim card status, I get -

AT+CPIN?

+CME ERROR: SIM not inserted

Is there any special command to enable sim card detection? I went through the datasheet and could not find any.

Also, I notice that the SIM_VDD pin has no voltage on it. Does the SIM card need to support the IMEI number of the module to be able to detect it?

I am currently powering the module through a USB cable. Is that sufficient or is it only for communication and I have to use an external supply to one of the connectors. For reference, this is the module that I have - CRT01260S.

Please let us know if there's anything that's missing in the approach. Thank you.

 

[ahsrabrifat]

Hello,

I have a SIMCOM A7670E module. The module works fine for the regular commands such as -



Now, I am trying to get the sim card functionality up and running so as to send an SMS. I have inserted my SIM card into the holder, in the right way. When I query the sim card status, I get -

AT+CPIN?

+CME ERROR: SIM not inserted

Is there any special command to enable sim card detection? I went through the datasheet and could not find any.

Also, I notice that the SIM_VDD pin has no voltage on it. Does the SIM card need to support the IMEI number of the module to be able to detect it?

I am currently powering the module through a USB cable. Is that sufficient or is it only for communication and I have to use an external supply to one of the connectors. For reference, this is the module that I have - CRT01260S.

Please let us know if there's anything that's missing in the approach. Thank you.

Check if your power supply is sufficient and the SIM is functional (With enough balance).

 

[goatcs]

i can see that vbat and vdd_ext_1.8V pins have 1.8 V on the module. Does the SIM need to have balance to be able to power it and detect it? I dont think so