Changing Apple ID in iCLOUD Setup on iPhone 4S
Recently purchased an iPhone 4S and successfully set up iCloud. Shortly after, I changed my primary email address. I updated my Apple ID and iTunes is fine when logging on. iCloud login on iPhone still has previous email address and I can't locate a place to edit it. Only option I see is to delete the iCloud Account from my iPhone. Is that what I must do to get this resolved? What about any new apps or contacts on phone? Will they be lost if not backed up prior to changing my Apple ID?
iPhone 4S, iOS 5.0.1, Chg Apple ID in iCLOUD Login Setup