USBfever has released a new SIM Unlock Card, which it says is compatible with the v2.2 iPhone firmware. The card should theoretically allow the use of different networks' SIM cards in an iPhone 3G, without having to resort to the risks posed by jailbreaking. The 10mm-thick Unlock Card is positioned parallel to a user's own SIM card, and can also be used in any other locked mobile phone.
