Jailbreaking the iPhone allows users to run unauthorized software that modifies Apple’s iOS mobile operating system. One application currently available is My3G, which makes the phone operating system believe it’s connected to Wi-Fi when it is actually on a 3G network. As first reported by MacStories, My3G, available through jailbreak stores Rock for $3.99 or Cydia for $2.79, makes it possible for users to make FaceTime calls without a Wi-Fi connection.
On an unmodified iPhone 4, the FaceTime open standard voice chat does not use cell minutes, as it is a data-only connection. In June, when Apple announced the iPhone 4 and FaceTime functionality, Chief Executive Steve Jobs indicated that his company would like FaceTime to work over 3G networks, but said that his company needs to “work a bit” with the cellular providers.
Jailbreaking an iPhone, iPad or iPod touch voids the warranty of the device, and is a practice discouraged by Apple, as it can be used to pirate App Store software. But last week, the U.S. Library of Congress declared it legal to jailbreak an iPhone, provided the modifications are not done to illegally steal software.
Jailbreaking can also be used to unlock an iPhone for use on other carriers than those approved by Apple. The U.S. government has also declared that practice legal, and hackers with the iPhone Dev Team have said that an iPhone 4 unlock will be released this week.