Do you need a separate apple ID for a iPhone and different one for another device such as iPad?
iPhone 4S
Posted on Jan 8, 2013 3:27 PM
Q: How do I change the email address for my apple ID?
No you don't need a separate one, and you are best with only one Apple ID.
To change the email address see this document:
http://support.apple.com/kb/HE40