title: Deleting Keychain when uninstalling iOS app
body: <p>I have been reading several posts regarding this issue, for example <a href="https://stackoverflow.com/questions/4747404/delete-keychain-items-when-an-app-is-uninstalled">Delete keychain items when an app is uninstalled</a> and <a href="https://forums.developer.apple.com/thread/36442" rel="nofollow noreferrer">iOS autodelete Keychain items after uninstall?</a>. They say that, when you uninstall an app, its <code>Keychain</code> is not deleted, but the posts may be deprecated, is that the current behaviour?</p>
  
  <p>On the other hand, if <code>Keychain</code> is not really automatically deleted when the user uninstalls an app, I'm not clear about the way to do that yourself.</p>
  
  <p><strong>EDIT:</strong> If <code>Keychain</code> are not deleted when apps are uninstalled, what actually happens to all those residual <code>Keychain</code>? Does the system not handle that? </p>