This guy so doesn't get it. It's almost as if he is trolling.

SIM cards (as implemented everywhere in the world except the US) is made to allow exactly the portability which he seeks.

I fail to see why it is even linked here.

Edit: Also why is he illustrating this with an iPhone? Is it for lulz that he in the name of advocating openness links to the closest closed phone of all out there?

I'm voting troll here.