title: How to get Telephone Number In Android
body: <p>I want to get the telephone Number.
  I used this sample code..</p>
  
  <pre><code>TelephonyManager tm = (TelephonyManager)getSystemService(TELEPHONY_SERVICE);
  String strphonenumber = tm.getLine1Number();
  </code></pre>
  
  <p>And I used the permission- READ_PHONE_STATE.</p>
  
  <p>But its returning null.</p>