One of the best features of the new iPhone 4 is without any doubt the FaceTime calls feature. It is certain that the function will be available, but will it affect your wallet? No! It is the simple answer from Apple. Not right now, at least.
Apple made it clear that the use of FaceTime function will not affect the “free” minutes of your contract. Why? It will work only over Wi-Fi networks. The use of the service is free also.
There was some confusion because of the four iPhone’s ability to switch from voice to video call in the middle of the call, but Apple said: “The voice call is completed as soon as FaceTime call is connected. FaceTime call works over Wi-Fi to use it is not your free minutes. “