Vooma, the company whose cases brought phone capabilities to the iPod touch, has come up with a new case called the Vooma iPhone4 Peel PG920, which brings dual SIM capabilities to jailbroken iPhone.

Along with a SIM slot, the case also comes with extra 1380 mAh battery back up. The radios in the case require an app available on the Cydia Store to pair up with the iPhone. TechCrunch got their hands on a pre release version of the case, and they were quite impressed:

Once it’s set up the Peel PG92 works seamlessly and even uses a similar interface to Apple’s own dialer – although it’s clear that the programmers had to cut a few corners to get the look and feel correct. For example, the dialing screen is actually a bitmapped copy of the original dialer and the letters and numbers are slightly warped. However, all of the major functionality is recreated in the Vooma app.

The case would be a life saver for people who travel frequently and are stuck with an iPhone 4 whose baseband is locked to a GSM carrier. This will allow them to use the local GSM carrier SIM in the second SIM card slot.

Check out the images embedded below to see what the case looks like:

In case you’re interested in buying the case, enter your email id on Vooma’s site, and you’d be notified of its availability.

The case would be compatible with the iPhone 4S, as soon as its jailbreak is publicly released.

What do you think?

[via TechCrunch]