title: How to identify when SIM changed in iPhone?
body: <p>How to find if a user changes his SIM card from his phone(iPhone). we can find "mobileCountryCode,isoCountryCode,mobileCountryCode and mobileNetworkCode" through programatically these are not specific to particular SIM, these are specific to operator, is there any way to identify when user changes his SIM card from his iPhone.</p>
  
  <p>Please any one help me on this.</p>
  
  <p>Thanks in advance.</p>