If I buy an unlocked iphone 4 can it be used for straight talk?

If a buy a new iphone 4 off ebay and it is unlocked can I use it for straight talk? And will I have to change my number? I'm currently on boost. Also I was wondering if the iphone 4 has a front facing camera?

Hi
in order to use it with boost you have to make sure if they let you, because some phone companies are not compatible with the iPhone 4.

And yes the iPhone 4 does have a front camera so you can FaceTime any time.

hope this helps