New back button is one of the newly added feature in iOS 9 which makes users to return quickly to the previous application from the current app. If you’re aware then simply follow this article about how to use new back button in iOS 9.
iOS has an ability to automatically steer the proper application for the thing you want is immensely useful, but it can be drag. Like if you want to watch you tube video then you can watch it through You Tube application rather than opening the safari and go to YouTube website which will be irritating. As a result, many iOS users have burned the double-tap-swipe-left-tap-again gesture into muscle memory.
In latest iOS that’s no longer necessary. When you tap on a button or link in an app or notification that directs you to another app, iOS 9 will replace the signal meters in the upper left with a back button — just tap it go back to where you were.
The back button will stay in place until you switch away from the new app, but it won’t go more than one level deep. If you follow a link from Messages to Safari, then from Safari to the App Store, you can’t use the chain of breadcrumbs to go back to Messages and it will only take back to safari.
