RM502Q-AE AT&T Registration - Unknown MCC/MNC

[khelben]

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Wed Oct 19 20:49:56 2022 daemon.info [2591]: <info>  [modem0] 3GPP registration state changed (idle -> searching)
Wed Oct 19 20:49:56 2022 daemon.info [2591]: <info>  [modem0] state changed (enabled -> searching)
Wed Oct 19 20:49:56 2022 daemon.warn [2591]: <warn>  [modem0] couldn't load operator code: Current operator MCC/MNC is still unknown

I have a AT&T SIM provisioned for an unlimited 5g cellphone (it works fine in my cell phone) that I'm attempting to use with the modem in openwrt on a rpi4b.

I'm not overly knowledgeable about using modemmanager or mmcli, the last time i really did anything with a modem it was 1997 and you measured the speed in kilobits.

I was expecting to be able to provide the same APN as my phone and be off and running, this doesn't seem to be the case as i keep getting the above message. I've tried a few of the other AT&T listed APNs to no avail.

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  3GPP     |                    imei: xxxxx
           |           enabled locks: fixed-dialing
           |             operator id: 310410
           |            registration: idle

Based on the above mmcli -m 0 output the mcc/mnc should be 310 410 which matches at&t - so why am i getting unknown mcc/mnc? Is an apn setting mismatch?

[khelben]

Still having a tough time getting initial registration on AT&T.

I've tried so many different param / qwcfg i finally just did an AT&F to start fresh again.... same thing.

Any help is appreciated. This just keeps repeating in the logs:

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Fri Oct 21 20:51:04 2022 daemon.info [2587]: <info>  [modem0] 3GPP registration state changed (idle -> searching)
Fri Oct 21 20:51:04 2022 daemon.info [2587]: <info>  [modem0] state changed (enabled -> searching)
Fri Oct 21 20:51:04 2022 daemon.warn [2587]: <warn>  [modem0] couldn't load operator code: Current operator MCC/MNC is still unknown
Fri Oct 21 20:51:04 2022 daemon.warn [2587]: <warn>  [modem0] couldn't load operator name: Current operator id is still unknown
Fri Oct 21 20:52:27 2022 daemon.info [2587]: <info>  [modem0] 3GPP registration state changed (searching -> idle)
Fri Oct 21 20:52:27 2022 daemon.info [2587]: <info>  [modem0] state changed (searching -> enabled)

[miles267]

Hi - did you ever figure this out? i'm facing the same issue and didn't see any updates to your post. Thanks for any guidance you can provide with AT&T SIM APN.