Ok. Here are the steps:
For iPhone 8+ or earlier or iPod Touch with iOS 11 or later/ iPad with iOS 11 to iOS 12.4.7
1: Swipe up from the bottom of the screen.
2: Tap the lock icon indicated on the image
For iPhone, iPad, and iPod Touch using iOS 7 to iOS 10.3.4:
1: Swipe up from the bottom of the screen
2: Hit the lock icon on the top right.
For iPhone X, XR, XS, XS Max, 11, 11 Pro, and 11 Pro Max, or iPad with iPadOS 13 or later:
1: Swipe down from top right corner
2: Hit the lock icon indicated on the image
