How To Tell How Long Your Phone Battery Will Last. There you will see all the applications that have been running in the background. If you have an iPhone 6 SE or later youll see this option above the graph and below the battery modes.

If it gives as little as 4 more power than required by the device you can lose up to 50 of battery capacity every time you charge it. Tips On How To Make Your Phone Battery Last Longer. The Calculator provides how long a battery will last.
Tips On How To Make Your Phone Battery Last Longer.
Under Battery see how much charge you are left with and how long it will last. Dont leave your iPhone on. Dont charge if your battery is at 80 or over. You can also check out your battery usage by going to settings and selecting battery usage.

