My iPhone 5 just got stolen and then I got this iphone 6. Yosemite looks great and feels even better when you have an iPhone. But there are something that I don't understand. Basically if I answer a incoming phone call on my Mac, my Mac actually acts like. Giant Bluetooth headset am I right? Or the data are transferred over wifi network? If it is with wifi, does it mean two devices don't have to keep like 10m range as long as they are in the same network?