Is it that loose circuit that wraps around the metal piece on the bezel that you are referring to? On some of the ebay adds they include the Bezel, the metal contact piece as shown in your picture, the touch screen itself and also a tiny circuit that is part of the home button. I am told this circuit is separate from the touch screen and can get lost.
Here is the ebay auction Number I am referring to that shows that part of the circuit: 270520706282
And I stumbled on to this Ebay Auction that actually sells the part separately for $8.99 with free shipping: