iOS4 has brought some cool features to the iPhone 4 like multitasking, categories, threaded emails etc. One such great feature available on the iPhone 4 is Facetime. Facetime is a ready-to-use free video calling service that works over the WiFi. However, now with jailbroken iPhones you can also use Facetime over 3G. Now, in whichever country you might be the 3G data plans are generally limited to 1 to 2GB. So,it’s rather better to know how much bandwidth does FaceTime use over 3G or Wifi.
According to reports, Facetime uses 2-3 mb of bandwidth per minute. Now you know why AT&T can’t support it over 3G.