title: Touch and hold in TableViewCell to show (tooltip) popover is it possible in iPhone?
body: <p>According to image could you please advise me which function use to develop this feature?
  i'm not sure, is it implement from UIPopover?
  any idea, thank you. </p>
  
  <p>source from Music.app iOS 5 beta 2</p>
  
  <p><img src="https://i.stack.imgur.com/IXwRR.png" alt="enter image description here"></p>