Learn how to use the FaceTime app
Open the FaceTime app, tap New FaceTime, then enter the name or phone number of the person (or people) you want to call. Tap
During a FaceTime call, you can share your screen with the other person (or people) on the call.
Tap Share your screen during a FaceTime call
Change your FaceTime audio settings
Note: Not all features and content are available in all countries or regions.