Welcome to the Apple Support Communities. I see your FaceTime app isn't responding.
Does this happen every time you try to use FaceTime? There are some great steps you can try here If an app unexpectedly quits, stops responding, or won’t open :
If you're not able to force quit FaceTime when this happens, you might also try a force restart using the steps from the article titled If your iPhone, iPad, or iPod touch won't turn on or is frozen :Force quit the app
- iPhone, iPad, iPod touch: Close the app and open it again.
- Apple Watch: With the app open, press and hold the side button to show the power options. Then press and hold the Digital Crown to quit the app.
- Apple TV: Double press the TV/Home button and swipe left or right to find the app with the issue. Then swipe up to close the app.
Check for updates
Make sure that your device has the latest version of iOS, watchOS, or tvOS.
Then check for app updates. For iOS and Apple Watch apps, go to the App Store on your iOS device, then tap Updates. If an update is available, tap Update. If asked, enter your Apple ID and password. You might need a Wi-Fi connection to update some apps on your iOS device.
Delete and reinstall the app
iPhone, iPad, iPod touch: Delete the app, then redownload it from the App Store.
I hope this helps you with FaceTime.If your device has a frozen screen, doesn't respond when you touch it, or becomes stuck when you turn it on, learn what to do.
If your screen is black or frozen
If your screen is black or frozen, you might need to force restart your device. A force restart won't erase the content on your device. You can force restart your device even if the screen is black or the buttons aren't responding. Follow these steps:
- On an iPhone 8 or later: Press and quickly release the Volume Up button. Press and quickly release the Volume Down button. Then, press and hold the Side button until you see the Apple logo.
- On an iPhone 7 or iPhone 7 Plus: Press and hold both the Side and Volume Down buttons for at least 10 seconds, until you see the Apple logo.
- On an iPhone 6s and earlier, iPad, or iPod touch: Press and hold both the Home and the Top (or Side) buttons for at least 10 seconds, until you see the Apple logo.
Have a great day.