FaceBreak is a tweak available in Cydia that allows iDevices users to enable the ability to use FaceTime through a mobile operator data connection. Apple does not allow the use of FaceTime via 3G because the quality of calls would suffer due to data connections that are not as fast in all areas. Apple decided to allow the use of FaceTime only over Wi-Fi to save mobile operators from network congestion and to ensure that users have the best quality of video calls.
FaceBreak 1.16 is the first version compatible with iOS 4.2.1, so you can open Cydia to update it and use it through your operator's 3G network. FaceBreak costs $1.49 and is available in Cydia.
