I recently purchased a iPhone 4 from a friend of mines who is now upgrading to the 4S. I currenlty have T-mobile as my carrier. Your probably asking why did I buy an iPhone if AT&T is not my cell phone carrier? Well, I'll tell you why I did that...
I love iPhone and the fact that you can Jailbreak and Unlock them to use for other cell phone company's. I was really excited to do this because I love what the iPhone has to offer but the plans are just too expensive to switch over.
Jailbreaking your iPhone means freeing it from the limitations placed on it by your carrier, whether it is AT&T or Verizon, and Apple. You install a software application on your computer, and then transfer it to your iPhone, where it "breaks open" the iPhone’s file system to allow you to modify it. The customization is endless and you can literally spend hours customizing the color schemes, apps, games, etc.
Here is a tutorial below on how to Jailbreak:
