Many iPhone users are noticing a fast drain in battery life in iOS 11. You can check which apps are using your battery by going to Settings –> Battery and then scrolling down to where it says ‘BATTERY USAGE.’ You will see a screen like this:
This is a very handy chart that lets you see which apps are using your battery. For me, it’s Google Play Music. I admit, I do use the Google Play Music App a lot to listen to music.
If you click on the App in question, it will tell you how much you have used it. I clicked on Google Play Music and it told me that I have used it for 2.3 hours on the screen and 4 minutes in the background over the last 24 hours.
You can look at your battery drain over the past 24 hours, or the past 7 days.
For hints on how to save battery life, check out “iOS11 battery drain problems”.