How to Close Apps on iPhone 12, 11, XS, XR and X

Here's proof right from Craig Federighi:

https://www.macrumors.com/2016/03/10/force-quitting-apps-doesnt-help-battery/

Apple has been saying that for years, but it doesn't change the fact that some apps (especially Facebook) are notorious for running in the background and draining your battery when (according to Apple press releases) they are supposed to be suspended.

Killing the offending app is the only way to make it stop. And since you have no way of knowing which apps are good and which are bad, it's far easier to just kill them all when you're done with a session.

iPhone X user here. It was never necessary to press the red minus. Once it appears, swiping up to close apps works as well. This just eliminates one step in between which is welcomed!

Interesting...

Quitting apps used to be a thing which folks weren’t really aware off. As a somehow geek person, I used to advise people to do so. It became an act that showed that someone knew the logic of background activity draining battery performance, especially apps that were using GPS, or that were constantly connected to the internet to receive push updates.

I am somehow sceptical about the text in the OP, since perhaps the OS is smarter att handling performance, but ... some principles must pertain with regards to battery performance and awareness of apps, with regards to being able to log your online presence or your location or whatnot.

Can we take the statements above with a grain of salt, or do I really need to rethink my understanding on the matter?

Here's proof right from Craig Federighi:

https://www.macrumors.com/2016/03/10/force-quitting-apps-doesnt-help-battery/

Edit: More documentation from Apple.

https://developer.apple.com/library/archive/documentation/iPhone/Conceptual/iPhoneOSProgrammingGuide/TheAppLifeCycle/TheAppLifeCycle.html#//apple_ref/doc/uid/TP40007072-CH2-SW1

Apple has been saying that for years, but it doesn't change the fact that some apps (especially Facebook) are notorious for running in the background and draining your battery when (according to Apple press releases) they are supposed to be suspended.

Killing the offending app is the only way to make it stop. And since you have no way of knowing which apps are good and which are bad, it's far easier to just kill them all when you're done with a session.

I don’t care what anyone says, I usually kill all the apps running each morning,pretty much from the day before and start clean..

Why keep apps running if they don’t need to be.

Thanks for the references. I can conclude that my scepticism belongs to those threads instead.

Nevertheless: users should use common sense and close apps as they feel for doing. The principle of the oposite being true (it would more drain your battery than preserve it) is a long shot. If you relaunch an app, you are intentionally adding load to the processor and therewith asking for battery power. I can never believe that the loss of power trough intentional processes would be higher than the gain of battery by not doing so for a good while.

Off course, if you pick up the phone every minute, open an app and close it, it would not be so smart for battery life.

My point being: we as a user should be fully entitled to close apps to our likings, as you never know what happens when they are lurking in the background.

For macrumors to pertinently stress on a statement by Frederigi, is quite off the hook. Commons sense will prevail amongst us users.

Of course, that's why the feature exists. You can close apps, and there are absolutely valid reasons to do. In the post, I'm just saying that you don't *need* to for reasons like preserving battery life because it is a common myth that if you don't close apps they're constantly running in the background or eating up too much memory.
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EXACTLY.

You absolutely do and can save battery by closing the apps that use background battery (aka, facebook and instagram among others, but those are the two worst offenders). They are 100% NOT in a frozen state and they 100% use resources.

I'd argue that it's ultimately more efficient to turn off background refresh on these apps rather than to worry about closing them each time you use them. I have background refresh off for Facebook and some other apps that are notorious for using system resources.

Uhm, that's not all that different than what I do now. It's not necessary in iOS 11, for example, to use the red minus (I don't get a red x ??) but just swipe up on the desired app to close it.