I have it set to use Cellular data for automatic downloads...yet it never automatically downloads my app updates unless I am on WiFi. I go into the app store and the updates appear and just sit there with the red badge. As soon as I connect to WiFi they download immediately. When you use cellular data for automatic downloads does it just take longer or happen at a specific time. And again, I have 'Use Cellular Data' for automatic downloads toggled to ON, so please don't suggest that as a fix.