I had to change my email address and I've also changed it in iTunes, however now I can't log into iTunes to purchase apps from my iPhone. It still shows my old Apple ID and I can't figure out how to change it. I've synced my phone with computer but doesn't help.
Why did so many people answer this one question?
Thanks Tobman! your post helped me resolve my issue....🙂
i couldnt buy anything. then you just helped me
how to create apple id
perfect...thanks!
Hi. I had the same problem and this worked for me. Log onto your new apple id account with itunes. Connect your phone to your computer and you will be able to update and download apps that way. The downside is you can't do it directly from your phone. Hope this helps. 😉
thank you thank you thank you, a million thank you's, this has worked for me, i've been all over help and support to try and find the answer thank you again
Glad to see this working for you buddy. 
Thank you so much! Someone hacked me and I'm just going in and changing my ID. Your response was simple and effective!
I got the same problem as above.
I switch between two accounts: @gmail, Brazillian account, creditcard information, for free and paid apps; and @hotmail, Japanese account, no creditcard information, only for free and Japanese store exclusive apps.
When I try to update an app purchased in Brazillian account, it pops up a window asking for password for Japanese account. Obviously, after trying to certificate with hotmail password, it says that I have to purchase it to update.
When verifying in Config -> Store, I can see that I am logged in Brazillian account. But when I try to update, it always asks me for Japanese account password.
The only workaround I have found is to delete the app and then re-install it (iPhone asks for AppleID + password, then I type Brazillian account), it confirms that I have already paid for it and installs successfully. The problem: I lose all app info, docs and stuffs.
Does anyone have a solution for this?
i tried this but it will not let me update my apps...i can download any app...just cant update it returns with the old id
Yes! This works perfectly!! Thank you!!
I don't believe you can change you email account if it's an "MobileMe" email account.
LOL you are so cool
Thank you so much! That was a very helpful answer and worked a treat! 😀
How to change Apple ID on iPhone
