Of course they are.
Sources inside European carriers have reported that Apple has been working with SIM-card manufacturer Gemalto to create a special SIM card that would allow consumers in Europe to buy a phone via the web or at the Apple Store and get the phones working using Apple’s App Store.
The model should work well in Europe, where the carriers tend to use the same networking technology and are far more competitive. It also means that customers can roam more easily with the iPhones, swapping out the carriers as needed. The iPhone has lost its exclusivity in much of Europe and other markets of the world, which makes this model a compelling one for consumers, but a nightmare for carriers. Apple could change the mobile game once again.