Use Screen Recording in Control Center, then wait for the countdown.
Step by Step
- Open Control Center.
- Find Screen Recording; add it first if needed.
- Select Screen Recording.
- Wait for the countdown.
- Perform the actions you want to record.
- Stop from the status indicator or Control Center.
- Find the recording in Photos.
If That Doesn't Work
- Some apps restrict recording of protected content.
- Microphone audio is a separate option on supported versions.