title: How to detect sim change in iOS
body: <p>I'm implementing the currency transfer  mobile app and i have to fetch the information about something that is unique on particular iOS device. I HAVE TO DETECT sim change.</p>
  
  <p>I went through many links<a href="https://stackoverflow.com/questions/19179799/how-to-identify-ios-device-uniquely#comment34664042_19179896">how to identify ios device uniquely</a></p>
  
  <p>and </p>
  
  <p><a href="https://stackoverflow.com/questions/10872117/is-it-possible-to-determine-if-the-sim-phone-number-has-changed">Is it possible to determine if the SIM/Phone number has changed?</a></p>
  
  <p>but they are of no use, plus it cant be detected if user removes sim when app is not running.</p>