What happens to contacts SMS personal data?

How can I transfer personal data like contacts, SMS, Pages docs, her pictures to my wife's new account (actualy existing but not used)? I would like to set up her phone as new iPhone with new account. Two separate accounts. Thanks!

Message was edited by: ion mihai Me and my wife are using the same apple ID for all devices. How can I separate accounts without losing anything, including personal data. I'm wondering if Family sharing will do the job.