Mobile Roaming Not Working

[Lousy Fisherman]

I am currently using the Pinephone CE 3BG edition with the current Arch|Phosh build.  It is using Freedom (Shaw mobile) in Canada, and calls, SMS and data all work, despite having to reset and reboot regularly. However, once I move off the fairly limited Shaw cellular network the phone never roams over to another network, of which there are two big ones in Canada, Telus and Bell.

I know many people have to manually connect to their network so I don't know if I am being a little hopeful but....

Questions:
Is anyone using the pinephone on Telus or Bell and did you have to do anything to access the network?

Is roaming part of the modem's responsibilities? Or is this a current software limitation where roaming
information from the network provider is not being used or stored yet?

Is there a manual way to provide roaming information or configuration to the modem?

TIA
LF

[nas]

Don't know the answer but a related question may be how to view/select available cell networks on a pinephone. Some kind equivalent linux software to SIM Tools or the builtin function on feature phones may be required.

[bcnaz]

This 'may' have to do with your APN settings.
Here in the USA I am using a MVNO of T-Mobile (Simple Mobile)
I found I need a different APN when the signal changes from 4g to 3g.
They both 'work' but require different APN's.