Uninstalling Facebook app saves up to 15% of iPhone battery life

Testing reveals Facebook iOS app drains battery life, even when it isn't being used, and that using Safari instead will make an iPhone last longer

Facebook is one of the most downloaded apps on iOS but it has long been cited as a cause of fast-draining iPhone batteries. Last year it was accused of using background tricks to stay active even when it wasn't being used. Facebook admitted bugs existed, and fixed them, but questions of the app's impact on battery life remained.

Similar concerns about Facebook's Android app led to the discovery that deleting the app saves up to 20% of a phone's battery. After that revelation, I set about seeing if the same was true for iPhone users. I discovered that uninstalling Facebook's iOS app and switching to Safari can save up to 15% of iPhone battery life.