title: How to get the telephone number of the device
body: <p>I want to retrieve telephone number of the current Device. Now I cannot get the telephone number. I have added <strong>READ_PHONE_STATE</strong> permission in manifest. Here is my code</p>
  
  <pre><code>TelephonyManager tMgr = (TelephonyManager) this.getSystemService(Context.
  String mPhoneNumber = tMgr.getLine1Number();  
  </code></pre>