Open apps drain battery only if they are actively running in the background

An app sitting in your recent apps list does not drain your battery. iOS suspends apps the moment you switch away from them, freezing their activity until you return. The app uses almost no power while suspended — it is stored in memory, not actively processing.

Battery drain happens when an app continues to run after you leave it. This is called background activity, and it is the real problem. Some apps request permission to keep running — to play music, track location, refresh email, or send notifications. Those apps do consume power even when you are not looking at them.

The difference matters because closing apps from your recent list does nothing to stop the ones actually draining power. You have to stop the background activity itself, not just swipe the app away.

Key Takeaways

  • Apps in your recent apps list are suspended and use almost no battery; closing them from that list makes no real difference.
  • Battery drain comes from apps running in the background with permission — location tracking, music playback, email refresh, and notifications are the main culprits.
  • You can see which apps use the most battery by opening Settings > Battery > Battery Usage, which shows background activity over the last 24 hours or 10 days.
  • Turning off background app refresh in Settings > General > Background App Refresh stops most apps from running when you are not using them.
  • Location services, especially "Always" or "While Using", drain battery faster than any other background permission.

Which apps actually drain battery in the background

Not all apps request background permission. Maps, for example, only runs when you open it. But some apps are designed to work behind the scenes. Navigation apps like Google Maps and Waze run constantly if you set them to "Always" location access. Music apps like Spotify and Apple Music keep playing when your screen is off. Email apps refresh your inbox on a schedule. Social media apps send notifications and refresh feeds.

The biggest battery drain is location services. An app using "Always" location access runs your GPS continuously, which is one of the most power-hungry features on your phone. "While Using" location access only runs when the app is open, so it drains less. Apps set to "Never" do not use location at all.

Bluetooth and Wi-Fi scanning also drain battery if left on. Your phone searches for networks and devices in the background even when you are not actively connecting. Turning off Bluetooth when you are not using it saves noticeable power.

How to see which apps are draining your battery

Open Settings, then tap Battery. You will see a graph of your battery level over the last 24 hours. Below that, tap Battery Usage to see which apps consumed the most power. The list shows apps ranked by percentage of total battery used.

Tap the clock icon at the top right to switch between the last 24 hours and the last 10 days. The 10-day view shows patterns — if an app consistently ranks high, it is a regular drain. If it only appears once, it may have been running unusually that day.

Each app entry shows a small icon next to the percentage. A location arrow means the app used location services. A phone signal icon means it used cellular data. These icons tell you which permission caused the drain. An app using 8% battery with a location arrow is draining power because of GPS, not because it is inherently heavy.

Turn off background app refresh to stop most drains

Open Settings > General > Background App Refresh. You will see a list of every app on your phone. The toggle next to each app controls whether it can run in the background. Turn off the toggle for apps you do not need running when you are not using them.

Turning off background refresh for social media apps, news apps, and email apps saves significant battery. These apps are designed to refresh constantly, and most people do not need them updating every few minutes. You can still open them manually whenever you want — turning off background refresh only stops them from running on their own schedule.

Some apps, like Messages and Phone, should stay on so you do not miss calls or texts. Music apps need background refresh to keep playing when your screen is off. Navigation apps need it to work. For everything else, turning it off is usually safe and saves power.

Location services are the biggest battery drain

Open Settings > Privacy > Location Services. You will see every app that has requested location access. Tap each app to see its setting: Never, While Using, or Always.

"Always" is the most aggressive. The app can use your GPS whenever it wants, even when you are not looking at it. Only navigation apps and fitness trackers should have "Always" access. Change everything else to "While Using" or "Never".

"While Using" means the app can only use location when it is open on your screen. This is the right setting for maps, weather, and camera apps. They need to know where you are, but only when you are actively using them.

"Never" turns off location for that app entirely. Many apps request location permission but do not actually need it — games, flashlight apps, and note-taking apps often ask for it but work fine without it. Denying location to these apps costs nothing and saves battery.

Other background permissions that drain battery

Location is the biggest drain, but other permissions matter too. Open Settings > Privacy to see what else you have allowed. Microphone access lets apps listen in the background. Camera access lets them use your camera. Contacts, Photos, and Calendar access let apps read your data.

Most of these do not drain much battery on their own. But an app with microphone access that is also running in the background and refreshing constantly will drain faster than one without those permissions. Review the apps that show high battery usage in your Battery Usage list and check what permissions they have.

Bluetooth and Wi-Fi are not in the Privacy menu — they are toggles in Control Center. Turning off Bluetooth when you are not using wireless headphones or watches saves battery. Wi-Fi scanning happens even when Wi-Fi is off, so turning off Wi-Fi entirely stops it. However, Wi-Fi uses less power than cellular data, so leaving Wi-Fi on when you are home usually saves battery overall.

Why closing apps from the recent list does not help

Swiping apps away from your recent apps list feels like you are stopping them, but you are not. iOS already suspended them the moment you switched away. Closing them from the list just removes them from the list — it does not change their power consumption because they were not consuming power to begin with.

The only time closing an app matters is if it is actively running on your screen. If you are in an app and it is draining battery, closing it stops the drain when ready. But once you have left the app, closing it later does nothing.

This is why battery drain problems are not solved by closing apps. The apps using power are the ones with background permissions, and you have to turn off those permissions to stop the drain. Swiping apps away is just tidying your recent list.

Frequently Asked Questions

Does leaving an app open overnight drain battery?

Not if the app is suspended. Once you leave the app, iOS freezes it and it uses almost no power. The only exception is if the app has background permission and is actively running — for example, a navigation app with location access or a music app playing audio. Those will drain battery whether the app is in your recent list or not.

Why does my battery drain fast even though I close all my apps?

Closing apps does not stop background activity. Check Settings > Battery > Battery Usage to see which apps are actually using power. Then check Settings > General > Background App Refresh and Settings > Privacy > Location Services to turn off permissions for the heavy users. That is where the real drain is.

Does turning off background app refresh stop all notifications?

No. Turning off background app refresh stops the app from running on a schedule, but notifications can still arrive because Apple's notification system handles delivery separately. You will still get alerts from messages, calls, and other important notifications. You just will not get constant refreshes of news feeds or social media.

Is it bad to leave background app refresh on for everything?

It drains battery faster, but it is not harmful to your phone. Apps with background refresh enabled will refresh their content on a schedule so the information is fresh when you open them. The trade-off is battery life. Most people find turning it off for non-essential apps is worth the battery savings.

Can I tell if an app is running in the background right now?

Not directly. iOS does not show you a list of currently running apps. But you can see which apps used the most battery in the last 24 hours in Settings > Battery > Battery Usage, which tells you which ones were active. If an app shows high usage but you barely used it, it was running in the background.