I factory reset my Note 3 due to battery issues. The jury's still out as to whether this fixed it but I now have another problem. I get a notification sound at random intervals - can be 3 in 30 minutes or 1 every 6 hours. There is no notification to be seen when I drag the bar down to look. Annoyingly, when this happens during the night the phone buzzes although I have it set to silent not vibrate. I have looked on the web for solutions and there seem to be plenty of other people with the same issue on the Note 3 but I can't find a solution. Things which were suggested which I've tried but didn't solve it include turning off NFC, installing Notification History (no notifications showing when noise sounds) and uninstalling potential problem apps such as GPS Status. The 2 main suggestions seem to be to factory reset which is exactly what I had done and Settings>Accessibility>Vision and turn off Notification Reminder but then I get no notifications at all which rather defeats the object. Does anyone have any suggestions please, it's driving me mad?