Do people that are called through FaceTime show up on my carrier's bill? [duplicate]
Facetime uses Wifi or Cellular data so will not show as regular calls on your carrier bill.
You can use FaceTime on any of these devices on Wi-Fi: iPhone 4 or later, iPad Pro (all models), iPad 2 or later, iPad mini (all models), and iPod touch 4th generation or later (only iPod touch 5th generation or later support FaceTime audio calling).
With a cellular data plan, you can also use FaceTime without Wi-Fi on any of these devices: iPhone 4s or later, iPad Pro (all models), and iPad (3rd generation or later).
Details of your FaceTime call history are stored locally on your device.