Updating iCloud username on iphone

Question

After updating my apple ID to reflect a more current email address I am having trouble signing into Icloud on my iphone. While the new account information is reflected in itunes, it is not on the iphone. The phone asks for an icloud password for the old email which I originally set up the phone with and has the email field greyed out so that I cannot input the new username/email address. How can I update this on the phone to allow me to use icloud features such as air drop?

Answer 1

When you changed the AppleID, do you mean you changed the primary email address at the manage account section at https://appleid.apple.com/
Or, did you actually create a new AppleID with the outlook mail address?
If you did the latter, then you are fubar'd.  Your iCloud account's primary ID is the AppleID you used to create it, so if you created a new AppleID, your old one remains (regardless of the status of that primary email address) and so that iCloud account remains, and remains tied to that AppleID.
All you can do now is create a new iCloud account with the new AppleID.
As long as you just edit your AppleID information at the link I posted above, then you only change the identifier for that AppleID and the account itself is unchanged (so everything tied to that AppleID would work with the new login identifier).