I am so thankful that facetime is on Wifi. There have been a few occassions when i was in a store with no cell service, but was able to get on facetime and talk. The biggest was my one year old son was recently admitted to a childrens hospital, while he was there, my wife was able to call everyday and talk to my other two kids and see them with facetime. In this large hospital and its old brick/concrete building cell service of any kind is impossible. But they have free hospital wifi.If not for this we never would of spoke everyday, let alone allow her to see our other kids. Now if i can just teach her to not hold the phone in her left hand while on the cell network.