Recording voiceover video on iPhone is a part of screen recording functionality. You simply add spoken content over a video recording. Here’s how you can do it.
Enable screen recording
➤ Go to Settings → Control Center.➤ Add Screen Recording from here to Control Center.
Record voiceover
➤ Swipe down from the top right to open Control Center.➤ Tap and hold the circular record button.➤ Turn on the microphone.
When you enable the microphone, you can record your voice over whatever is recording on the screen.
You can use it to add instructions to a video or record a video call.