To enable/disable Live Photos during FaceTime calls, head to Settings -> FaceTime on your iPhone or iPad and scroll down until you see FaceTime Live Photos. Toggle it on or off. It will be on by default so you may want to check this setting if you don't want people taking live photos of you while you are on a FaceTime call. Both parties must have iOS 11 installed for this feature to work. If you are able to use it you will see a white shutter button in the bottom left of your FaceTime screen.
Despite rumors to the contrary, Apple has yet to add a camera to Apple Watch. While some watch owners might see this possibility as a distraction, others are chomping at the bit to FaceTime and snap photos directly from their wrists. CMRA makes this possible in a stylish, self-contained rechargeable band. In fact, CMRA adds two cameras to Apple Watch, a forward-facing camera to snap photos AND a FaceTime camera for live video calling.
While FaceTime can be great in some situations, it's probably not your preferred method of communicating. You can block somebody from FaceTiming you, though it will also block regular calls and messages from them too. To do so, open up FaceTime and tap on the info button next to the contact you want to block, or enter a number in the text bar at the top. Scroll down and tap on "Block this Caller" then "Block Contact" to confirm.
FaceTime can be great for some occasions, like talking to your kids, but it's likely not your first choice for everyday calls. You can disable it so you don't receive any FaceTime calls that you don't want, in case you have a relative that thinks it's the best thing since sliced bread. Simply head to Settings -> FaceTime and toggle FaceTime to off.
iPhone owners are now accustomed to using FaceTime for video calling. With FaceTime installed across Apple's product line, for many the app represents the first and only video conferencing solution they've used. The problem is that with Android devices, callers cannot be reached using FaceTime. Today, Google entered its hat into the ring with Google Duo, a simple one-on-one video calling app.