Image: Apple
Here’s how to share your screen on a FaceTime call. This is useful for meetings or other types of video chats and activities with your friends and family.
Join a FaceTime call or if you're already in a FaceTime call tap the screen once on your iPhone or iPad.
You will then see a small icon with your video settings and audio settings.
Next to those icons you will see the screen share icon.
Tap the screen share icon once and a countdown to sharing your screen will begin.
Once you start sharing your screen you can go through your iPhone and iPad and also view your friends or family members in the FaceTime call. The icons of members in the call will appear at the bottom of the screen.
To end screen share, simply tap the screen of your iPhone or iPad again, and click the screen share icon in the FaceTime control center.
Your screen will stop sharing and you will go back to your normal settings in your FaceTime call.
Sharing your screen on FaceTime will allow you to share what you're working on, share movies, or even share photos on FaceTime.