There is a weird story developing on the The Unofficial Apple Weblog that seems to be impossible but, well, there it is. The TUAW guy claims to have used an application called iASign and a prepaid AT&T card, taken it down to his UK-based Vodafone retailer, got them to recognize the sim card inside an o2XDA phone he brought with him, went back home, popped out the AT&T card and put it inside his iPhone. And now he’s making phone calls on the Vodafone network using the Apple iPhone. Supposedly this should be impossible to do. There has been a couple of hiccups; he’s had no luck getting video or visual voicemail to play on the iPhone via Voda’s network but he can mail images. It’s not quite an unlocked iPhone but time well tell if other international sim cards can also trick the iPhone into allowing their calls.

So far there has been no comment from Apple, which doesn’t come as much of a surprise.