Apple has released its latest iPhone operating system, iOS 4.0 and just as quickly, the hacker community has managed to jailbreak it. For the uninitiated, "jailbreaking" refers to the ability to unlock a device in order to install unapproved, third-party applications. Given both AT&T and Apple's restrictions regarding the iPhone, this process is a must for many Apple device owners. Jailbreaking allows for a plethora of new features, including turning the phone into a Wi-Fi hotspot, being able to fully customize the phone down to its icons, forcing Wi-Fi only apps to run over 3G and, for those whose older devices don't support all of iOS 4's new features, jailbreaking offers some viable alternatives. Sponsor Jailbreaking vs.