G: [Non-text content: thoughts; content_type=thoughts]

G: [Non-text content: reasoning_recap; content_type=reasoning_recap]

G: TL;DR
Swipe down from the top-right corner to open Control Center, tap the Screen Record button, then tap it again (or the red status bar) to stop.

Step-by-Step

1. Enable in Control Center

   • Open Settings → Control Center.
   • Under More Controls, tap the green + next to Screen Recording.

2. Start Recording

   • On your iPhone 12 (Face ID): swipe down from the top-right corner.
   • Tap the record icon (a solid circle within a ring).
   • If you need microphone audio, press-and-hold that icon first, then tap Microphone Audio to turn it on.
   • Recording begins after a 3 second countdown.

3. Stop Recording

   • Tap the red status bar at the top of your screen, then tap Stop, or
   • Open Control Center again and tap the record icon.

4. Find Your Video

   • Open the Photos app → Recents. Your screen recording will appear there.

Recording is now saved to Photos and ready to share or edit.