Comment 7 for bug 1499342

Ok. This is interesting:

I've put the card in my old MeeGo based phone and here's what happens:

I don't yet know if automatic roaming works as I would probably need to walk around out side and I haven't done that yet. However, going to system settings -> cellular networks I get all 4 of the above listed. Clicking on "o2 - de" makes it switch to the o2 network successfully. The indicator starts toggling between "simyo" and "o2 - de".
If I click for example on "Vodafone.de" I do get a permission denied popup.

So the "forbidden" status in our scan-for-operators seems to be the issue.