iOS devices
iPhone 8 or earlier:
Press the Power and Home buttons at the same time.
Open your Camera Roll photos where screenshots are saved automatically.

iPhone X and newer:
Press the Power and Volume Up buttons at the same time.
Open your Camera Roll photos where screenshots are saved automatically.

macOS devices
Press and hold these three keys together: Shift, Command, and 3.
You will see a thumbnail in the corner of your screen. Click it to edit the screenshot or wait to save it to your desktop.

Screen Recording (iOS 11 or later needed):

1. Go to Settings > Control Center and scroll to More Controls (or tap Customize Controls if you have iOS 13 or earlier), then tap the plus icon next to Screen Recording.
2. Pull up your Control Center by swiping upwards from the bottom of your screen and tap Start Recording. Then wait for the three-second countdown.
3. Open Control Center, then tap the red Record icon. Or tap the red status bar at the top of your screen and tap Stop.