EC25-AU and configure more than 4 operators via QFPLMNCFG

IoT Modules LTE Standard Module
1

Hi, we are facing a problem in EC25-AU to ADD more than 4 operators in FPLMN
with the command AT+QFPLMNCFG:
AT+QFPLMNCFG=“Delete”,“all”
AT+QFPLMNCFG=“Add”,“12345”
OK
AT+QFPLMNCFG=“Add”,“12346”
OK
AT+QFPLMNCFG=“Add”,“12347”
OK
AT+QFPLMNCFG=“Add”,“12348”
OK
AT+QFPLMNCFG=“Add”,“12349”
ERROR
It seems that more than 4 operators is not allowed.
How can we deal with that?

2

I don’t know how the +QFPLMNCFG command works to configure those PLMNs.

You might consider using the User controlled PLMN selector with Access Technology SIM file as an alternative.

Assuming the file exists on your SIM, first read its existing content with:

AT+CRSM=176,28512,0,0,0

3

Yes, we have configured our network operator in the EF related to User controlled PLMN selector with Access Technology.
However, we still get the status 3 (CEREG) from other operators. So, we have put entries in the FPLMN. It works, but I need to increase the file size of this EF FPLMN via AT command preferentially. Is it possible?

4

I’m not sure I follow you. Are you saying you get status 3 from PLMNs which are not listed in the EF_FPLMN file?

EF_FPLMN is a fixed size, and that size should be revealed by the AT+CRSM=176,28539,0,0,0 command.

5

I see. Is there any way to send APDU command to SIM card inside UE? A tool or something similar?
Checking the documentation, I have found:
AT+CCHO
AT+CGLA
AT+CCHC
Should it be possible to program the simcard??