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When I want to change the default iOS back button, I need to hide the default back button. This causes the back gesture is also disabled. Therefore, I need to keep the back gesture and make the change. To make these happen, I do steps: Disable the default back button Set the new back button to left bar item Enable the navigation interaction gesture for back gesture Here is the codes (Swift 5) class MyViewController: UIGestureRecognizerDelegate { self.navigationItem.hidesBackButton = true let image = UIImage(systemName: "chevron.backward") let backBarItem = UIBarButtonItem(image: image, style: .plain, target: nil, action: nil) self.navigationItem.leftBarButtonItem = backBarItem self.navigationController?.interactivePopGestureRecognizer?.delegate = self func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldBeRequiredToFailBy otherGestureRecognizer: UIGestureRecognizer) -> Bool { return true } }