How to Close Open Apps on iPhone: What You Need to Know
Closing apps on an iPhone sounds simple — and mostly it is. But there's more going on under the hood than most people realize, and knowing the why behind the process changes how you think about when to actually do it.
What "Open" Apps Actually Means on an iPhone
When you press the Home button or swipe up to leave an app, it doesn't fully close — it suspends. iOS moves the app into a frozen state in the background, where it isn't actively using your processor or draining your battery. It's held in memory so it can reopen quickly.
This is different from how apps work on a desktop computer, where background programs can keep running, using CPU cycles and resources. On iOS, Apple's operating system is designed to manage background activity automatically and aggressively.
So when someone says "close open apps," they usually mean one of two things:
- Dismissing apps from the App Switcher (what most people mean)
- Forcing a fully frozen or misbehaving app to quit (force-closing)
How to Access the App Switcher
The App Switcher is the interface that shows all your recently used apps as card-style previews. Here's how to get there:
On iPhones with Face ID (no Home button): Swipe up from the bottom edge of the screen and pause in the middle. The App Switcher will appear with your recent apps arranged as cards.
On iPhones with a Home button (Touch ID models): Double-press the Home button quickly. The App Switcher opens showing the same card layout.
Once you're in the App Switcher, you can scroll left and right to browse through your open app cards.
How to Close an App from the App Switcher
To close (dismiss) an app from the App Switcher:
- Open the App Switcher using the method above
- Find the app card you want to close
- Swipe the card upward toward the top of the screen
- The app disappears from the list
You can swipe multiple app cards up at the same time using multiple fingers if you want to clear several at once.
The app isn't deleted — it's still installed on your phone. Closing it here just removes it from the suspended state in memory. Next time you open it, it loads fresh from scratch rather than resuming where you left off.
Force-Closing a Frozen or Unresponsive App 🔄
If an app is completely unresponsive — frozen screen, no touch response, stuck loading — force-closing it is the right move.
The process is the same as above: open the App Switcher, find the problematic app's card, and swipe it up. iOS treats this as a force quit, ending any background processes tied to that app.
A few scenarios where force-closing genuinely helps:
- The app has crashed or frozen mid-session
- A video or audio stream is stuck and won't respond
- The app is displaying stale data and needs a fresh load
- You're troubleshooting a bug before deciding to reinstall
Does Closing Apps Save Battery or Improve Performance?
This is where the common advice diverges from reality. 📱
Apple's official guidance — and the way iOS is architected — suggests that routinely closing apps does not meaningfully save battery life and can actually make things slightly worse. Here's why:
- Suspended apps use negligible memory and almost no CPU
- Reopening a fully closed app requires the phone to reload it from storage, which uses more battery than resuming a suspended one
- iOS already evicts apps from memory automatically when it needs the resources
The exception involves apps with background refresh enabled. If an app is actively syncing data, playing audio, or tracking location in the background, it is using resources — but that's managed through Settings → General → Background App Refresh, not through the App Switcher.
| Scenario | Does Closing Apps Help? |
|---|---|
| App is frozen or glitched | ✅ Yes — force-close it |
| Routine battery saving | ❌ Not meaningfully |
| Speeding up a slow phone | ❌ Usually not |
| Stopping background sync | ⚠️ Partially — settings handle this better |
| Freeing RAM on older devices | ⚠️ Sometimes, situationally |
When Closing Apps Does Matter
There are real situations where managing your App Switcher makes practical sense:
Older iPhone models with limited RAM (anything older than an iPhone XR or equivalent) may occasionally benefit from clearing memory-heavy apps before running something demanding like a game or video editor.
Privacy-conscious use cases — if you've accessed sensitive information in an app and want to ensure no preview of that screen is visible to someone who might access your phone.
App-specific bugs — some apps don't handle suspension gracefully and develop quirks over long sessions. A fresh restart of the specific app (not the whole phone) often resolves these.
Troubleshooting steps — if you're following support instructions or trying to reproduce a bug, force-closing is usually step one before anything else.
What About Restarting the iPhone Itself?
Closing individual apps and restarting your iPhone are different things. A full restart clears all suspended apps, flushes RAM, and resets system processes — which is generally more effective when the phone itself feels sluggish rather than a single app.
If you're experiencing widespread slowdowns, unresponsive touch, or system-level glitches, a restart addresses things that clearing the App Switcher won't.
iOS Version and Model Differences
The core mechanics described here apply broadly across modern iOS versions, but the gesture sensitivity and App Switcher behavior can feel slightly different depending on:
- Which iPhone model you're using
- Which iOS version is installed
- Whether you've adjusted accessibility settings like Assistive Touch or Reachability
On some older iOS versions, the behavior of background app suspension was less aggressive, meaning closing apps had more tangible effects. On current iOS releases, the system is much smarter about managing resources on its own.
Whether closing apps regularly is worth building into your habits — or whether you're better off leaving iOS to handle it — depends on your specific device, how you use it, and which apps are part of your daily workflow.