RM505Q-AE Modem Supporting PLMN-ID 310-010

Hello,

Have anyone run into issue with using the RM505Q-AE modem with PLMN-ID 315-010? This modem works fine with the test PLMN-ID 001-01 on band 48 for both 4G and 5G. However, with new SIM cards using PLMN-ID 315-010 I could not get it to work. It would search and send up the initial attach followed by a release immediately by the modem. Note that the same 310-010 SIM cards were used on other devices with new issue on the same testbed.

Thank You.
David T.

Dear @dtea
Please share your current firmware and share the response of AT commands below:
AT+QENG=“servingcell”
AT+QMBNCFG=“list”

What is the operator for 315-010 ?

I do not have direct access to the RM505Q-AE. This is integrated with Zebra ET85C tablet. PLMN-ID 315-010 is shared PLMN-ID for band 48, used in private wireless networks. Does this help?

Dear @dtea
Sorry, without AT command or log, it is hard to locate the issue. Just syspect there are some wrong configuration like APN and others.
You can check with Zebra and check if they have any idea about this.