Switch between apps on iPhone
Open the App Switcher to quickly switch from one app to another on your iPhone. When you switch back, you can pick up right where you left off.
Use the App Switcher
To see all your open apps in the App Switcher, do the following:
iPhone X and later: Swipe up from the bottom edge and pause in the center of the screen.
Other models: Double-click the Home button.
To browse the open apps, swipe right, then tap the app you want to use.
Switch between open apps
On iPhone X and later, to quickly switch between open apps, swipe left or right along the bottom edge of the screen.