After the upgrade I was forced to enter my iCloud credentials again. After entering them and clicking sign in my email address and password get the little checkmark next to them and then I get the following error:
"An error occurred while trying to save the icloud account"
It blanks out the iCloud username and password. If I try again it says the account has already been added. If I go to my contacts, they're all gone.
Any ideas how to solve or work around this error. Would be great to have my contacts back on my phone.