Restore iPhone backup from iTunes (from another person's phone)?
I have a deceased family member who has an iTunes backup of their iPhone 4S on their computer - I have their Apple ID and password, so I would be able to access it. We no longer have this person's phone, and I was wondering if it were possible for me to use my own phone (thinking of getting a new iPhone 4S because of the current low price) to restore, getting the data I want off of it (text messages, pictures, etc.) and then hit Erase All Content and Settings to return my phone to being brand new. I am worried that using someone else's backup would make it so that my phone number changes to theirs. Is this what would happen? Thanks