iPhone 3G exchange - Personal Data issue

[gadgetdad]

So I will be swaping my 3G out today or tommorrow. It's bricked and that was explained in a previous post. My concern is that once they unbrick it in California or wherever, what about all my personal data on the iPhone? Should I change my email passwords so that if for whatever reason my data is not wiped from the old phone, no one can access it?

Other options?

 

[TEG]

It is bricked. They will wipe everything off of it or replace the chips. They never look at the phones, as most of the work is automated in a special set of software utilities.

TEG

 

[gadgetdad]

It is bricked. They will wipe everything off of it or replace the chips. They never look at the phones, as most of the work is automated in a special set of software utilities.

TEG

The reason for my concern is that when I replaced my 2G iPhone and got a white box replacement, there were contacts and photos on it from whomever had it before me.