Can you FaceTime over 3G with jailbroken iPhone 4?

Question

Can you FaceTime over 3G with jailbroken iPhone 4?

If so, can you FaceTime in following situations?

1. A initiates FaceTime over 3G with jailbroken iPhone 4. B is also on 3G with jailbroken iPhone 4.
2. A initiates FaceTime over 3G with jailbroken iPhone 4. B is also on 3G with non-jailbroken iPhone 4.
3. A initiates FaceTime over wifi connection. B is on 3G with jailbroken iPhone 4.
4. A initiates FaceTime over wifi connection. B is on 3G with non-jailbroken iPhone 4.

Answer 1

Yes to all of your questions.

The Jailbreak app My3G tricks your iPhone into thinking it is on WiFi, enabling you to use FaceTime over 3G.

Source: http://www.macrumors.com/2010/08/02/facetime-over-3g-comes-to-jailbroken-iphone-4s/

Answer 2

Just to update an old question, this is now a carrier issue - most carriers either allow Facetime over cellular or have an option to pay for it.

Answer 3

3G Unrestrictor does this as well, and it's available in Cydia, so you don't have to put Rock on your phone.