FaceTime is the best video calling platform for iPhone users. It comes preinstalled in all Apple products and is the easiest video calling platform to use. It was designed for Apple products so it works beautifully on their devices.
First, open your phone's settings and scroll down to FaceTime and press it
Second, turn it on if it isn't already
That is it. Just wait for your teacher to call you.
When your teacher calls, make sure that your video and audio are turned on.
Keep working hard and you will get to where you want to be because Everyone Great has a Beginning.