title: Is it possible to get wifi signal strength in ios 9
body: <p>I want to check WIFI signal strength to display some kind of message for weak WIFI signal. </p>
  
  <p>I fount that it is not possible in iOS 8 and older.</p>
  
  <p>Is it possible to get wifi signal strength in iOS 9? and if answer is yes then How?  </p>