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Unable to Connect to Network Using ST4SIM200M eSIM with nRF9151 DK Board

manoj_42
Visitor

Dear [Support Team / Sir/Madam],

I am encountering an issue with connecting to the network using an ST4SIM200M eSIM along with the nRF9151 DK board.

I have followed all necessary setup steps, but the device is still unable to successfully register on the network.

Here are the AT commands I executed along with their responses:

> AT

OK
> AT+CEREG=5

OK
> AT+CSCON=1

OK
> AT%XSYSTEMMODE=0,1,1,0

OK
> AT+CFUN=1

OK
> AT+CEREG?

+CEREG: 5,4

OK

+CEREG: 2,"C154","00366391",9

+CSCON: 1

+CEREG: 2,"C154","00366391",9,0,11

+CSCON: 0

+CEREG: 2
> AT#XPING="www.google.com",45,5000,5,1000
"EAI_SYSTEM"

ERROR

The AT+CEREG? command consistently returns 0,4, which indicates that the device is not registered and is searching for a network.
Additionally, AT+COPS? shows 0, implying automatic network selection, but registration is not succeeding.

For your information:

  • I am located in Surat, Gujarat, India.

  • The eSIM is the ST4SIM200M model provided for IoT deployments.

  • The board in use is the nRF9151 DK.

And at the truphone website sim managment section i see my sim status is offline. explain me what is that and how to i activate to it. i share to my screeen shot of that page.

truphone_active_status.png


Could you please assist me in diagnosing and resolving this issue?
Any suggestions for further steps or required configurations would be greatly appreciated.

Thank you for your support.

Best regards,
Manoj Patil

1 REPLY 1

@manoj_42 wrote:

the nRF9151 DK board.


That's a Nordic Semi product - nothing to do with ST.

You can ask Nordic for assistance here: https://devzone.nordicsemi.com/

Does your board work with any other SIM ?
Does your SIM work with any other board ?

 


@manoj_42 wrote:


> AT#XPING="www.google.com",45,5000,5,1000
"EAI_SYSTEM"

ERROR


There should be a way to get extended error information, with more details of the failure reason;

eg, AT+CMEE - Nordic would be able to help you with that...

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.