You cannot zoom in using the front-facing camera. This camera is most used to display your face during a FaceTime call. The front-facing camera is already the at optimal distance needed to display your Face. If you need to zoom in using the front-facing camera, you can just bring the camera closer to your face.

The person you are on a FaceTime call with will not see the zoomed-in portion of your screen. This feature is for your benefit to help you see the screen better.

If you have deleted the FaceTime app, you can download it again for free from the App Store.

Tap New FaceTime. Type the name of the contact you want to call in the Search bar at the top. Tap the video camera next to the contact you want to FaceTime with.

To zoom back out, place your thumb and index finger on the video feed and pinch them together. If you are not able to zoom in, tap the “Effects” button (the three overlapping circles) below the feed. You don’t have to apply any effects. Just open the menu and then try pinch zooming. The Effects button is not available on all iPhone and iPad models. [1] X Research source

Tap New FaceTime. Type the name of the contact you want to call in the Search bar at the top. Tap the video camera next to the contact you want to FaceTime with.

You can use the Zoom feature on any app on your iPhone or iPad. To turn off the Zoom window, simply double-tap with three fingers again. To move the zoom window around, tap and drag the pill-shaped handle below the zoom window. If you decide you don’t want to use the Zoom feature, you can turn it off in the Settings menu at any time.