New Apple ID not pushed to iPhone I recently changed my Apple ID from an old email address to my current one. I updated the Apple ID in iTunes and then synced my phone with iTunes. Now, however, when I try to download new apps (or update existing ones), I get the standard notification asking for my Apple ID Password, however the Apple ID that is displays is my old Apple ID. When I enter in my password, it tells me that "Your iTunes Store password was incorrect. Please Try again".

I believe the problem is that for some reason iTunes is not pushing my new Apple ID to the device. Anyone know how to rectify this problem?
On your iPhone, go into Settings -> Store, sign out of your old Apple ID and sign in with your new one.