title: Difference between NetworkInfo.isRoaming() and TelephonyManager.isNetworkRoaming()
body: <p>I'm trying to detect wether the device is roaming or not in my app and I've found these two methods:</p>
  
  <ul>
  <li><a href="http://developer.android.com/reference/android/net/NetworkInfo.html#isRoaming%28%29" rel="nofollow">NetworkInfo.isRoaming()</a></li>
  <li><a href="http://developer.android.com/reference/android/telephony/TelephonyManager.html#isNetworkRoaming%28%29" rel="nofollow">TelephonyManager.isNetworkRoaming()</a></li>
  </ul>
  
  <p>Is there an essential difference between them or can I just choose one?</p>