How to Change a User Account on an iPhone
To make iPhone purchases and download games, applications, videos and music from the online iTunes Store, your phone must be logged in to an iTunes account. The account contains information such as your Apple ID, billing address and payment methods. You can register a credit card, which will be charged for purchases, or apply iTunes vouchers to the account. You can set up a new iTunes account directly from the iPhone handset or edit the information in your existing account.
Edit an Existing Account
Tap the "Settings" icon on the iPhone's home screen to launch the application.
Select the "Store" option. If the iPhone isn't already signed into your iTunes account, tap the "Sign In" button and enter your username and password in the relevant boxes. Tap the "OK" button to sign in.
Tap the "View Account" button. Your current account data will be displayed, including your Apple ID, payment information, credit balance and billing address.
Tap any part of the account data you want to edit and type in the new information. Tap the "Done" button when you've finished editing the account data.
Create a New Account
Launch the "Settings" application on the iPhone by tapping its icon on the home screen, followed by the "Store" option. If you're already signed into an iTunes account, tap the "Sign Out" button.
Tap the "Create New Account" button and select your country or region from the "Store" menu. Tap the "Next" button to continue.
Review the terms and conditions. Tap the "Agree" button in the lower right corner to accept them.
Enter the requested user details, including email address, password, security question, date of birth and billing information, in the relevant boxes and tap "Next." An automated message will be sent to the email address entered in the account details for verification. When the message arrives, click the included "Verify Now" link to confirm you have access to the email account.
Enter your new iTunes account username and password in the relevant boxes and tap the "Verify Address" button. The new iTunes account is now confirmed and ready for use.
Tips & Warnings
- Any content on the iPhone that's associated with your previous iTunes account will be removed when you open and sign into a new account.