How do you read settings from device?
Found them under system-settings-APPlications-messages (ah, that smartphone approach )

I do not care as I received a SMS once upon a time and all settings were applied automatically.
What about asking your provider to send you a configuration SMS? Sometimes possible easily from their web site, too.


p.s.: internet and mms APNs are different beasts, but ofc might be the same APN (using proxy)