public static bool isAirplaneModeEnabled(Activity act)
 {
     return Settings.Global.getInt(act.getContentResolver(),
             Settings.Global.AIRPLANE_MODE_ON, 0) != 0;
 }
 // returns true if time settings specifies 24 hour format
 public static bool isTime24HourFormat(Activity act)
 {
     ContentResolver cr = act.getContentResolver();
     string v = Settings.System.getString(cr, android.provider.Settings.System.TIME_12_24);
     return "12" != v;
 }
 public static bool getBluetoothEnabled(Activity act)
 {
     return Settings.Global.getInt(act.getContentResolver(),
             Settings.Global.BLUETOOTH_ON, 0) != 0;
 }