title: Android Get Phone SIM number
body: <p>How can I get The SIM card number using code ??
  I tried this code and it returned no number</p>
  
  <pre><code>TelephonyManager tMgr =(TelephonyManager)mAppContext.getSystemService(Context.TELEPHONY_SERVICE);
  mPhoneNumber = tMgr.getLine1Number();
  </code></pre>