With the housing MacRumors has issued, the user has the opportunity to use the phone with two SIM cards, so you can operate two different numbers, even of different operators. This would unlock the phone. What is the main catch? Well, that to run this case, your iPhone must be unlocked. That is, it must have happened by the famous jailbreak process that allows Apple users to break free from the constraints of the company. In any case, you must download an application from Cydia and the phone can recognize this application as official. Thereafter, you can start using the terminal with dual SIM, although in this case, the second card only allows you to make calls.
Another interesting advantage is about extending battery. And is that the housing further includes a bracket that makes the device thicker, but allows us to extend battery life. You can buy this device through the manufacturer's website, which is Voom, but so far has not opened the possibility of making this purchase. We face the PG920 model to be sold in black, gray and white colors consistent with the current iPhone. As I said at the beginning, the case is perfectly compatible with iPhone iPhone 4S and 4, the device that keeps a lot of similarities, especially as far as external design is concerned.