Install the app for free - https://apps.apple.com/us/app/screen-...
How to record your iPhone screen:
1. Launch the Screen Recorder for iPhone app.
2. Select a resolution, bit rate, and FPS from the main screen.
3. Then tap on the red circle to start recording.
4. Turn the microphone on if you want to record external recording.
5. Then, simply tap on Start Broadcast to start recording your screen.
6. When you're done, drag down the Control Center and hit the red dot icon at the bottom.
7. Open the Screen Recorder app and set an export resolution to save the recording on your iPhone.
For more details, please visit: https://xlightmedia.com/