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 ...

In fact, it turns out that FaceTime calls can be shared among non-Apple folks too, including your friends who use Android phones or Windows computers.

You can remotely control another person's iPhone, iPad, and Mac using FaceTime. This requires you to use Facetime's screen sharing feature and request control of the other person's device.

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.