Any app that runs in the background and constantly checks for updates is going to drain your battery faster than other apps. The most notorious when it comes to this behavior is the Facebook app — an app that tracks your location to serve you targeted ads and is always on the lookout for new videos and posts to serve you better.
But Facebook is not the only app that is guilty of this kind of overtime work.
According to Techlicious: “The biggest battery drains by far are the apps you're always using. Do you use your phone to check Facebook or your email regularly? Do you use AIM (AOL Instant Messenger) to talk to friends on the go, or have Spotify streaming music? Many apps like this are constantly checking for information in the background, notifying you of new messages or downloading data—which can burn through your battery life even when you aren't paying any attention to them.”
Deleting the Facebook app will immediately gain you more battery power — but that’s not your only option.
Adjusting the app settings on your phone can also help.
Your first step is to go to Settings > General > Background App Refresh and find out which apps are constantly running in the background. From here you can turn off Background App Refresh for ALL apps or be selective and toggle the setting off for only certain apps, like Facebook and Spotify.
This one simple setting change can add hours of battery life back to your phone.