Vooma's new Peel PG92 handset case isn't the first to bring dual-SIM capability to the iPhone 4, but it may be the most elegant. The accessory, which has yet to be released, essentially consists of an extra battery pack and an unlocked SIM slot. All you have to do is download Vooma's customized app to your jailbroken iPhone 4 or 4S, strap on
