iOS 5 upgrade deleted calendar from iPhone and iPad I managed to go into iTunes and change some settings for the calendar and was able to recover some of my calendar for my iPhone but not all of my events are on there.  And my iPad calender has nothing on it!  My iPhone has an extra calendar which is the name of my email address and my iPad dosent give me an option for this calendar which is why I think it's blank.  So I need to know what my settings should be to find my original calendar that i had on my iPhone?
Can you do a full restore from the backup at iTunes should have made before upgrading? Right click on iPhone in iTunes (device window on left) and hit restore from backup