In i OS 10 (and i OS 9), there's a feature called Low Power Mode that reduces overall power requirements and makes your battery last longer.Apple claims the mode will allow you to gain three extra hours of battery life from your i Phone.
We've updated this article for i OS 10, but many of the tips work for i OS 9, i OS 8 and i OS 7. i Phone users tend to quit apps we aren't using as it seems like a logical way to stop them sucking away at the battery.
(To quit an app, double-tap the Home Button and swipe up on the app you want to close.) But apparently, this isn't such a good idea after all.
Battery and scroll down to see which of your apps were the biggest battery guzzlers in the past 24 hours, or last seven days. A report that emerged in February from The Guardian claims that uninstalling the Facebook app can save you up to 15% of i Phone battery life.
Expect to see Facebook up the top; Safari also seems to be quite draining. Note any apps that highlight background activity as battery-draining - perhaps you need to address what this background activity is. Instead, you can access the Facebook website via the Safari app.
It should therefore come as no surprise the screen is one of your i OS device's primary power drains.