Hidden iOS function shows how much time is spent on app

iOS has a very simple view hidden away in the battery settings which show how much we actually spend on each app in our smartphones. Up to the minute.

Simply open the Settings app, scroll down to Battery and click that, then wait a few seconds for the app overview to load and the view you’ll see is your apps sorted by the amount of energy they’ve used over the past 24 hours or last seven days.
To the right of the 24h/7 days selector is a small clock icon. If the user touches that, the view is expanded, according to tech media reports.