Open your iPhone’s Settings. The icon will appear as a set of grey gears located on the Home Screen. Scroll down and tap FaceTime. It is located in the fifth set of menu options. Switch the FaceTime button to the "on" position. It will turn green. This will reactivate the app so you can video chat or send FaceTime messages to other Apple users.Can You FaceTime on your computer?
You can open the FaceTime link on your Windows computer by using either the Microsoft Edge or Google Chrome web browsers. Although FaceTime can be used in other browsers on Windows, Apple recommends Edge and Chrome. The FaceTime chat will now be available on your Windows computer as well as the web browser.