Does force-closing apps really drain my iPhone battery?

Yes—relaunching an app from scratch uses more CPU and memory than resuming it from the background, which increases battery drain over the course of a day.

When should I force-close an app on my iPhone?

Only force-close an app if it is frozen, unresponsive, or glitching; normal day-to-day use does not require manually closing apps.

What is the best way to save battery on an iPhone?

Enable Low Power Mode, reduce screen brightness, turn off Background App Refresh for unused apps, and let iOS manage suspended apps naturally.

Stop Force-Closing iPhone Apps—It Wastes Battery Life

This post explains why swiping away apps in the App Switcher does more harm than good—and what actually preserves iPhone battery life. If you've been force-closing apps after every use, you're likely working against the very thing you're trying to fix.

Does force-closing apps save battery on iPhone?

No. Force-closing apps on an iPhone generally wastes battery rather than saving it. iOS is designed to freeze background apps efficiently, keeping them in a suspended state that uses almost no power. When you swipe an app away and reopen it later, the iPhone has to reload the entire app from scratch. That cold launch consumes more CPU and GPU cycles—and drains more battery—than simply resuming a suspended app.

Apple's own support documentation confirms this. Craig Federighi, Apple's senior VP of Software Engineering, once stated in an email to a customer that force-quitting apps isn't necessary for battery life. The operating system handles memory and power management automatically. (That's the whole point of iOS.)

When should you actually close an app?

Only close an app when it's frozen, unresponsive, or behaving oddly. A crashed app might need a fresh start. The same goes for an app that's stuck on a loading screen or draining battery because of a legitimate background process gone wrong—like a GPS navigation app that's still tracking location after you've reached your destination.

For everyday apps such as Messages, Safari, Instagram, or Mail, leave them alone. iOS suspends them within seconds of switching away. The system keeps them in RAM so they'll launch instantly when you return. Swiping them away just forces your iPhone 15 Pro, iPhone 14, or even an older iPhone SE to work harder next time.

What actually improves iPhone battery life?

Small settings changes make a far bigger difference than obsessively clearing the App Switcher. Here are the habits that matter:

Lower screen brightness or enable Auto-Brightness in Settings > Accessibility > Display & Text Size.
Turn off Background App Refresh for apps that don't need it under Settings > General > Background App Refresh.
Use Low Power Mode when you're running low—it's available in Settings > Battery.
Limit location tracking by going to Settings > Privacy & Security > Location Services.

That said, not all background activity is bad. Apps like Spotify or Apple Music need background refresh to keep audio playing. The real culprits are poorly optimized apps—social media platforms with heavy video preloading, for example—that chew through power while the screen is off.

Habit	Impact on Battery	Worth Doing?
Force-closing apps	Negative (causes more relaunches)	No
Turning off Background App Refresh	Positive (reduces idle drain)	Yes
Using Low Power Mode	Positive (limits CPU and mail fetch)	Yes
Disabling location for unused apps	Positive (stops GPS wake-ups)	Yes

Worth noting: battery health degrades over time no matter what. An iPhone 13 with 80% battery health will struggle to last a full day regardless of app-closing habits. If your battery is aging, a replacement from Apple or an authorized service provider will do more than any settings tweak ever could. For more details, check Apple's official battery service guide and Tom's Guide iPhone battery tips.

Here's the thing—iOS isn't Android or Windows. It doesn't need manual housekeeping. Trust the software. Your battery will thank you.