To change your Apple ID on an iPhone, follow these steps:

  1. Open Settings:
    • Unlock your iPhone and go to the home screen.
    • Tap on the “Settings” app, which is represented by a gear icon.
  2. Tap on Your Name:
    • At the top of the Settings screen, you’ll see your name or Apple ID profile picture. Tap on it.
  3. iTunes & App Store:
    • On the Apple ID page, tap on “iTunes & App Store.”
  4. Apple ID:
    • You might need to enter your Apple ID password or use Touch ID/Face ID to authenticate.
    • Tap on your Apple ID at the top of the screen.
  5. Sign Out:
    • A pop-up menu will appear. Tap “Sign Out.”
  6. Confirm Sign Out:
    • Confirm that you want to sign out by tapping “Sign Out” again on the confirmation pop-up.
  7. Sign In with a Different Apple ID:
    • After signing out, you’ll see the “Sign In” option. Tap on it.
  8. Enter New Apple ID:
    • Enter the Apple ID and password for the account you want to use. If you don’t have an Apple ID, you can create one by tapping “Don’t have an Apple ID or forgot it?”
  9. Complete Sign-In:
    • Once you’ve entered the new Apple ID credentials, tap “Next” or “Sign In” to complete the sign-in process.
  10. Choose Syncing Options:
    • Depending on the apps and services associated with the new Apple ID, you might need to choose whether you want to merge data or start fresh.
  11. Update or Keep Data:
    • If you’re asked whether to merge data, you can choose to “Merge” to combine existing data with the new Apple ID or “Don’t Merge” to keep them separate.
  12. Settings Update:
    • Your device might update settings and preferences based on the new Apple ID.

Remember that changing your Apple ID will impact the services and apps that are associated with your device. Make sure you have access to the email address associated with the new Apple ID, as you may need it for account verification. Also, any purchases, app downloads, or subscriptions tied to the previous Apple ID will not be accessible unless you switch back to that account.