While apps are completely closed on your iPhone, it can run at maximum efficiency as it frees up memory and stops updating the wallpaper. This is especially important for non-responsive apps. If you have a problem with a particular app, you can simply close it by force rather than restarting it.
Since iOS 7, closing apps on all iPhones has remained the same and has been transferred to iOS 11 and iOS 12. Just double-click the Home button and swipe over the unresponsive app to force it to quit. But the iPhone X, X S X S Max and X R do not have a home button. .. how do you do that?
App for ending violence on the iPhone X, X S X S Max, and X R is still very much intuitive and with a little practice can be mastered faster than you can say "Qi". However, it's a step up from other iPhones, but in iOS 1
Step 1: Access the iPhone X App Switcher without Home Button
To access the App Switcher, swipe up from the bottom of the screen and pause your finger for one second in the center of the screen until all app cards appear. This break is the key. If you swipe too fast and do not hold, just return to the home screen. If you did that right, you're in the App Switcher.
Step 2: Force your apps over App Switcher
The process depends on which iPhone you have and what software it runs. Apple has made it much easier in iOS 12 after encountering angry users who hated it as it was built into the iPhone X with iOS 11.
In iOS 12 or later
If you're running iOS 12 or higher to force an app, simply swipe up on the map. Easy. This is the default setting on the iPhone X S X S Max and X R The ones with iOS 12 come out of the box. If you're on an iPhone X, you would need to manually upgrade to iOS 12.
For those of you on an iPhone X still running iOS 11, When you swipe on a map in multitasking view, the phone interprets this as a gesture the home button and simply minimizes the app so you return to the home screen. If you swipe on a map, the app goes into full screen mode.
So to properly close apps from the multitasking screen on the iPhone X with iOS 11, you can use the older long-press gesture applied in iOS 4 through iOS 6 Just give it a try Simply press any app in the multitasking interface and a red button with a minus sign (-) will appear at the top of each card. Simply tap the minus button here to close any app.
But the Swipe gesture is not completely disappeared in iOS 11 on an iPhone X. When the red minus buttons are displayed You can then swipe cards to close them. So you can still swipe to close, but only with the red minus buttons. If they are not there, just go back to the home screen.
If you still have an iPhone X with iOS 11, we recommend that you use the update if you want to forcibly close applications. Those with an iPhone X  X S Max, or X R does not have to, since it runs iOS 12 (default) [19659035Donotmiss: 100+ coolest new iOS 12 features you do not know