Close Android apps (and force exit)

The other day I was with a friend of mine and during a dead moment when we were both concentrated on the screen of our smartphone, I noticed how this person was crawling away, one after the other, the apps from the list of recent apps.
So I couldn't help asking him what he was doing, if he did it for a particular reason or if he was playing.
His response was that he was closing all the apps in order to free up memory and have the fastest smartphone.
This activity of closing applications by swiping them to the side can be done, on Android, by touching the button at the bottom right (in some phones it is on the left), the one with the symbol of two squares.
My friend, however, was completely out of the way if he thought of freeing up memory and keeping the phone fast just by removing apps from the list of recent apps.
What he was doing could be useful, if anything, for privacy reasons, just to hide which applications he had used last.
In fact, to close Android applications, on every Samsung, Huawei or other smartphone, all you have to do is touch the exit button or the one to go back.
Furthermore, as the system is designed, even if an application is not closed manually, it will leave the necessary memory free on the phone to start other open apps.
The only reason you may want to force an application to close is the case of an app that gets stuck and stops responding, if it keeps Android busy and prevents other applications from running and using.
To terminate an application that is not responding in Android, to force the exit from the app if it remains frozen or frozen, you can actually use the closure method that my friend was using improperly.
You can then press the Recent Applications button on the device to open the multitasking menu.
On many phones, this is the square button on the right side of the navigation bar on the screen.
If this key is not there, you can try holding down the Home button to open the same screen.
In the list of recent apps, slide the application you want to close to the right or left with your finger or touch the X icon next to the application title.
On some devices, you can see a quick "Close All" button at the top or bottom of the list, which has an icon with three lines arranged in a ladder.
This button allows you to kill all running applications.
As already mentioned above, however, it is never necessary to close applications on Android if the aim was to recover memory or speed, because the operating system is able, independently, to manage the use of resources so that they are always available for apps in use and not for those used before.
This method should only be used to terminate unresponsive applications .
Consequence of this is that all the apps that promise to speed up the phone by closing the apps not in use, are completely useless and do not give any beneficial effect.
We talked about this problem in explaining why closing the background apps on iOS and Android is useless and unnecessary
READ ALSO: Error App not responding, closed or blocked on Android; Solutions

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