What is a pull down button?
A pull-down button displays a menu of items or actions that directly relate to the button's purpose. After people choose an item in a pull-down button's menu, the menu closes, and the app performs the chosen action.
What is pull down menu iPhone?
iPhone X and later
To open Control Center, swipe down from the top-right corner of your screen. To close Control Center, swipe up from the bottom of the screen or tap the screen.