By default, your iPhone (or iPad) lets apps check for new data in the background. It can shorten load times when switching back to an app, but it also shortens battery life, takes up a bit of cellular data, and can cause some apps to spy on you. Here̵
First, open the “Settings” app on your iPhone.
In ‘Settings’, tap ‘General’.
In General, tap Background Apps Refresh.
Then you will see the settings for ‘Refresh apps in background’. If you want, you can turn off Background App Refresh app-by-app here. Just tap the switch next to any app you want to turn off to turn it off.
In 2019, the Washington Post found that some apps use the Background App Refresh feature to send data about your activities over the internet when you don’t suspect it, so unless you completely trust an app provider and think the refresh is likely to be useful to you, it is probably best to disable the feature for most of your apps.
Fortunately, Apple also makes it easy to turn off Background App Refresh completely. To do this, tap “Background App Refresh” at the top of the page.
On the next screen, select “Off” from the list.
After that, exit Settings and you’re all set.
Interestingly, background app refresh is one of the features that is turned off when you turn on power saving mode on your iPhone. Your iPhone will now consume less battery power in idle mode.
RELATED: How to Use Power Saving Mode on an iPhone (and What It Does Exactly)