Is there anyway to see what's on an iphone using their itunes password and username?

Is there anyway to see what's on an iphone using their itunes password and username?

By linking an iPhine with a computer that has a current version of iTunes, yes. Though this will mean you must have a valid login for both the iTunes account on the computer and the login for the iPhone (to verify that you trust the computer)

I believe by plugin the phone into the computer and using eithet iexplorer or iFunBox (forget which one) you can go through all the basic files (pictures, music, and I think maybe texts) but to access deeper files and the raw files it's needs to be jailbroken with afc2add

Absolutely you can't.