Currently Being ModeratedJun 12, 2013 9:09 AM (in response to bpshaugh)
To change your iCloud ID, go to Settings>iCloud, tap Delete Account, then sign back in with the new ID. This deletes the account and your iCloud data from your device, but not from iCloud. Provided you are signing back into the same account, your iCloud data will reappear on your device when you sign back in.
To avoid losing photo stream photos, save them to your camera roll (if not already there) before deleting the account. To do this, open your my photo stream album, tap Edit, tap the photos, tap Share, then tap Save to Camera Roll.
Currently Being ModeratedSep 20, 2013 5:29 AM (in response to randers4)
I have a similar problem: I changed my email address on Apple ID, all works well except the iCloud. I wanted to delete it as explained above, but since I also changed my password back then, none of the passwords is connected anymore to the old email address. So I cannot turn off iCloud and switch it on again with the new email address.
Currently Being ModeratedSep 20, 2013 9:05 AM (in response to MadDiaz)
If you still have access to your old email address, go to https//appleid.apple.com, click Manage my Apple ID and sign in with your iCloud ID. Tap edit next to the primary email account, tap Edit, change it back to your old email account and verify it. Then edit the name of the account to change it back to your old email address. You should then be able to turn off Find My iPhone with your password. Then go to Settings>iCloud, tap Delete Account and choose Delete from My iDevice when prompted (your iCloud data will still be in iCloud). Next, go back and change your primary email address and iCloud ID back to the way it was. You will then be able to go to Settings>iCloud and sign in with your current ID and password to reconnect to your iCloud account.
If you don't have access to your old email address, you will have to contact Apple to get them to reset the password for it so you can disable Find My iPhone and sign into your iCloud account. You will have to prove your identity to them in order to do so. You can either contact iTunes support for assistance with this (https://ssl.apple.com/emea/support/itunes/contact.html), or contact Apple Support (http://www.apple.com/support/icloud/contact/).