There's one limitation, though. Android and PC users can't start a FaceTime call on their own. They'll need an Apple user to ...

But there is a catch: Android and PC owners can participate in FaceTime calls, but not initiate them. They need to first be invited by someone with an Apple device and then join using a special link.

Apple users can use FaceTime to make video calls, and you might want to make use of the handy F button when on certain types of FaceTime calls.