Android - Mobile network settings menu (Jelly Bean)

Question

following code is not working for Jelly Bean (Android 4.1):

final ComponentName cn = new ComponentName(\"com.android.phone\",\"com.android.phone.Settings\");
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Answer 1

The code below is much more simple and tested on Gingerbread (2.3.7) and JB (4.1.2)

    startActivityForResult(new Intent(android.provider.Settings.ACTION_DATA_ROAMING_SETTINGS), 0);