Does Closing Your Apps Really Save Battery? Here's What Actually Happens

You've probably heard it from a well-meaning relative, a coworker, or one of those "battery hack" videos: swipe up on your phone, close every app sitting in that little app-switcher screen, and your battery will last longer. It feels like common sense — fewer apps open, less power used, right? This piece of advice has been passed around for well over a decade, and it's one of the most persistent tech myths out there. It's also, according to the people who actually build these phones, just wrong.

Myth vs. Fact

Myth: Force-closing the apps you're not using saves battery and makes your phone run faster.

Fact: For nearly every app, closing it does nothing for your battery — and can actually make things worse. This isn't a guess: a customer once emailed Apple executives asking this exact question, and Apple's software chief, Craig Federighi, answered in just two words: "No and no."

Here's the piece almost everyone misunderstands: an app sitting in your app switcher isn't actually running. Think of it less like a light left on in an empty room, and more like a bookmark holding your page in a book. The phone's operating system — iOS on iPhones, Android on everything else — has already paused it, using essentially no power and no memory to speak of. When you tap back into that app, the phone just picks up where you left off, instantly.

Now swipe that app closed instead. The next time you open it, the phone has to load the entire thing from scratch — reading it off storage, rebuilding its screens, reconnecting to the internet if it needs to. That takes noticeably more battery and processing power than simply resuming something that was already paused. So the "battery-saving" habit of closing everything can genuinely cost you more battery over the course of a day than just leaving your apps alone.

Why This Myth Refuses to Die

Part of the confusion goes back to how this screen was named when it first showed up on phones well over a decade ago: it looked like a list of "running" apps, so people reasonably assumed closing them would free something up — the same way closing a program on an old Windows PC used to help. But phones were built differently from the start. Your phone's operating system is constantly and automatically managing which apps get memory and power, moment to moment, far more precisely than a person tapping an X ever could. As Apple's own support documentation on the subject puts it, the system "is the expert about managing RAM; neither you nor any cleanup app can possibly outthink it." Android works on the same basic principle: apps you're not using get quietly frozen in the background, and the system reclaims their resources automatically if it needs to, without you lifting a finger.

When Closing an App Actually Makes Sense

None of this means the app switcher is useless — there are two good reasons to close something there. First, if an app is frozen, glitchy, or simply won't respond no matter what you tap, closing and reopening it is the right fix. Second, if you notice your battery draining unusually fast and you track down a specific app that's misbehaving — you can check this under Settings, in the Battery section on iPhone or Android — closing that one troublemaker is worth doing. Outside of those two situations, swiping through your whole app switcher every day is a habit you can drop with a clear conscience.

What Actually Helps Your Battery

If you want to genuinely stretch your battery life, put that effort toward things that actually move the needle: lower your screen brightness or let it adjust automatically, turn on your phone's built-in low-power or battery-saver mode when you're running low, and check Settings for a per-app battery breakdown so you can spot the one or two apps actually responsible for drain — usually ones using your location or playing video in the background. Those small adjustments do far more for your battery than closing apps ever will.