iPhone battery dying faster than you’d like? You can see exactly what’s using up your iPhone battery in the Settings app. It will show you which apps use more power than others, what services run in the background, and what drains your battery most over the course of the week.
If you suspect your phone doesn’t last as long as it used to, or notice that it’s charging very slowly, this will help you diagnose the problem.
Keep reading to find out whether you should quit all your iPhone apps when you’re done using them (you shouldn’t) and how you can keep apps and email from running in the background.