John Biggs from TechCrunch
There are no much details, however it appears that the case works with mini-SIM cards, instead of micro-SIM cards used in the iPhone 4S and
This case would be helpful for international travelers wanting to use a prepaid SIM from a local mobile carrier, without need to unlock their subsidized smartphone. To unlock an iPhone is usually more difficult than to simply jailbreak it. Vooma’s homopage offers a sign-up form to receive more information on its Peel PG920 case, but the company has yet provided no details on its availability or pricing.