When you open an application on your iPhone or iPad, you can leave it by pressing the home button or wiping it up from the bottom of the screen on an iDevice without a home button.
The app is paused and placed in the background in the app selector. Apple has announced that apps in the app voter hardly use any energy or make your iDevice slower. Nevertheless, you can choose to completely close apps via the app selector; You can also use this to easily switch between apps.
Open app voter
You can open the app selector by pressing the home button twice. If you have an iPhone or iPad without a home button, you can open the app selector by wiping up from the bottom of the screen and stopping halfway through the screen; Then release (more info).
Switch between apps
When you have opened the app selector, you will see previews of apps that are active in the background. Wipe through the apps to view them, tap to open them. With an iPhone or iPad without a home button you can also switch between apps by wiping the left or right screen at the bottom of the screen.
Close apps completely
Open the app selector and wipe up the preview of the app to completely close the application. You do this by wiping up the app that you want to close with one finger. If you want to close multiple apps in one go, you can use two or more fingers.