Closing apps on an iPhone is one of those tasks almost everyone does at some point, whether an app has frozen, is misbehaving, or you simply think it will help your battery last longer. The good news is that closing an app properly takes only a few seconds, but it’s worth understanding when it’s actually necessary, since doing it constantly can sometimes do more harm than good.
To close an app on any iPhone with Face ID (iPhone X and newer), swipe up from the very bottom of the screen and pause slightly in the middle of the screen to open the App Switcher. This shows a stack of preview cards for every app currently open. Find the app you want to close, then swipe it upward off the top of the screen to shut it down completely. On older iPhones with a Home button, double-click the Home button to bring up the same App Switcher view, then swipe up on the app card you want to close.
It’s worth knowing that most apps sitting in your App Switcher aren’t actually running in the background using battery or processing power; iOS automatically pauses and suspends apps you’re not actively using, keeping just a snapshot in memory so they reopen quickly. This means routinely swiping away every app in your switcher generally doesn’t extend battery life the way many people assume, and can actually use slightly more battery, since apps have to fully reload from scratch the next time you open them.
Where force-closing genuinely helps is when a specific app has frozen, is unresponsive, is draining battery unusually fast, or is causing your iPhone to overheat. In these cases, closing that one app through the App Switcher (or holding the app icon and selecting Close from the Home Screen options on newer iOS versions) is often enough to fix the issue without needing to restart your entire phone.
If closing an app through the App Switcher doesn’t resolve a frozen or unresponsive app, the next step is usually a full restart of your iPhone. Press and hold the side button along with either volume button until the power-off slider appears, slide to turn off, then hold the side button again to turn your iPhone back on. This clears the device’s active memory entirely and resolves most temporary glitches that a simple app close won’t fix.
For apps that keep crashing or freezing repeatedly even after restarting your iPhone, it’s worth checking whether an app update is available in the App Store, since developers frequently release fixes for exactly these kinds of bugs. If the app is already up to date, deleting and reinstalling it often clears out corrupted data that a simple close or restart can’t touch.
In short, closing apps on iPhone is a quick, useful troubleshooting step for a specific frozen or misbehaving app, but it isn’t something you need to do constantly as a matter of routine. Let iOS manage your background apps automatically, and reach for the App Switcher only when something is actually going wrong.
It’s worth mentioning that closing apps is different from force-restarting your iPhone entirely, and the two shouldn’t be confused when troubleshooting. Closing a single app through the App Switcher only affects that one app’s active session, while a full restart clears your iPhone’s entire working memory and reloads iOS itself from scratch, which is a more thorough fix for widespread issues affecting multiple apps or the whole system.
If you find yourself needing to force-close the same app repeatedly over several days, that’s usually a sign of a deeper problem worth investigating rather than a quirk to just live with. Check the App Store for a pending update, look at Settings, General, iPhone Storage to confirm the app isn’t corrupted or critically low on space, and if the issue persists, consider reporting the bug directly to the developer through the app’s support contact, often listed on its App Store page.