So you at last decided to jailbreak your iPhone 4 and enjoy the real power of an iPhone? Before I proceed on how to jailbreak your iPhone, let me give you a quick look at what is jailbreaking. iPhone Operating System (iOS) Jailbreaking is a process that allows an iPhone running Apple's iOS operating system to gain full access to all features of the operating system, as to remove limitations imposed by Apple. Once jailbroken the device, users are able to download additional applications, extensions and themes that are unavailable through the official App Store, via installers such as Cydia, Installous, etc. A jailbroken iPhone running iOS can still use the App Store and iTunes and other normal functions as usual.
Following simple steps will guide you through the process of jailbreaking your iPhone. Please note that this method works only with iOS 4.1 and previous versions.