IOS – Apple guidelines for back button

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Are there any guidelines for the position of the back button?

I always see the back button at the top-left part of the screen, but I don't know the exact position I should place it.

Best Answer

It is specified in the iOS Human Interface Guidelines that there is a default back button positioned in the top left. In full, it reads:

A navigation bar appears at the top of an app screen, below the status bar, and enables navigation through a series of hierarchical app screens. When a new screen is displayed, a back button, often labeled with the title of the previous screen, appears on the left side of the bar. Sometimes, the right side of a navigation bar contains a control, such as an Edit or a Done button…

More information can be found in the API documentation on the UINavigationBar.