>  I am working on creating a mobile embedded linux device using an LE910 
> module. I have been successful in using it to connect to the internet using 
> qmicli tools, however, I'd like to have more sophisticated network management 
> using ModemManager and NetworkManager. Unfortunately, I'm having some trouble 
> connecting with ModemManager. I issue the command:
>
> mmcli -m 0 --simple-connect="apn=VZWINTERNET"
>
> but am getting the error " Modem not yet registered in a 3GPP network... will 
> recheck" and eventually "3GPP registration check timed out". Any idea what 
> could be causing this? It seems very much like a bug in either ModemManager 
> or the modem firmware, if I'm able to connect using just qmicli. Registering 
> the network manually using "mmcli -m 0 --3gpp-register-in-operator=311480" 
> also doesn't work. "qmicli -d /dev/cdc-wdm0 --nas-get-serving-system" 
> indicates that the modem is registered.
>
> In case its helpful, I'm running ModemManager 1.6.10 and here's the output of 
> mmcli -m 0:
>

Are you able to get a full ModemManager debug log?
https://www.freedesktop.org/wiki/Software/ModemManager/Debugging/


-- 
Aleksander
https://aleksander.es
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