How to See What’s Draining Your iPhone or iPad Battery
By Leanne Hays
Want to see what apps are draining the battery on your iPhone? Your iPhone's battery usage is broken down app by app in the Battery Health section of your Settings app. The data lets you see the percentage of battery life used by each app, and also how long you spent on individual apps. You'll be able to save your battery life and save your phone by picking out the apps that use more battery than they should be.