For some people, their iTunes account, iCloud, even Apple Online Store accounts are one and the same. The email address and password combo they use to log into the iTunes Store, iBooks Store, and App Store is identical to the one they use to log into iCloud email and Find my iPhone. It's a beautiful, unified dream. Others, however, have separate iTunes accounts. Whether that's because they're so old they predate iCloud, or because they're shared with a partner or family, or simply because they want them that way, the email address and password they use to log into iTunes is different than iCloud, and has to be set up separately. If you're one of those people with a separate iTunes account, or you ever need to change which iTunes account you're logged in on, you're in luck — Apple makes it easy to do!
Note: Due to content licensing restrictions (i.e. Hollywood and the record labels), you can only have 5 computers and 10 iOS devices authorized on the same iTunes account at the same time. Also, you can only switch iTunes accounts once every 90 days. If you do it sooner, iTunes Match and iTunes in the Cloud will stop working until the 90 days are up.
How to switch iTunes accounts on your iPhone or iPad
- Launch the Settings app on your iPhone or iPad.
- Tap on iTunes & App Store.
- Tap on your current Apple ID at the top.
- Tap on Sign Out in the popup menu that appears.
- Sign into a different Apple ID in the fields provided.