FaceTime is Apple's calling app that allows video calls and audio calls over Wi-Fi and cellular networks on iPads, iPhones, iPods, and Macs.
How to share screen on FaceTime with others on iPhone, iPad, Mac
How to Use Call Waiting in FaceTime
How to entirely disable and block FaceTime on iPhone & iPad
FaceTime is coming to Android and Windows via the web - The Verge
Does FaceTime Use Data?
How to use gestures in FaceTime
How to create a FaceTime link for your Android and PC friends
What Is FaceTime?
FaceTime - Wikipedia
FaceTime Issues: What is the Problem With FaceTime? How to Disable