Record Your iPhone Screen
If you need to show someone how to do something, you can now record your iPhone screen and then send them the video file so they can follow along. It's really helpful when someone asks you how to do something on the iPhone 8. You can record with audio or without depending on what you want to do.
Open Control Center -> Tap on the record icon -> Choose microphone on or off and then tap on start recording.
The video file is saved to your Photos app and you can send it to someone through Messages, email or many other apps. It's simple to do and you don't need to appear on camera at all.