How to check which apps are draining your iPhone battery

Some of the reasons why you've lost battery are out of your control, but knowing which apps are draining it can help your iPhone last until the end of the day.

Some of the reasons why you&#39;ve lost battery are out of your control, but knowing which apps are draining it can help your iPhone last until the end of the day.<p><img src="https://www.engadget.com/img/gallery/how-to-check-which-apps-are-draining-your-iphone-battery/intro-1788195163.jpg" /></p>