How do I log in to iTunes?

Hello didla,

Thanks for visiting Apple Support Communities. We understand that you're wanting to know how to sign in to iTunes with your Apple ID on your iPhone. These steps will help get you signed in: Sign in with your Apple ID

If instead you've forgotten your Apple ID or password, these guides can help:

If you forgot your Apple ID

If you forgot your Apple ID password

If you do change your Apple ID password, be sure to complete these steps too: What to do after you change your Apple ID or password

We hope this helps.

Take care.

didla,

If we understand correctly, you're signed in with your old Apple ID on your iPhone and want to sign in with the new one you created. If you're being prompted to enter the password for your old Apple ID to be able to sign out, you will need to try to regain access by resetting the password. Use the guide above titled "If you forgot your Apple ID password" to reset the password.

We hope this helps.

Cheers.

Thanks.