Silver tab attached to long screw holding EMI shield in placeSome pics show this silver tab, some do not. It is mentioned in a past revision: Changes to step 15335 for revision 104870: M...
Answer to: Silver tab attached to long screw holding EMI shield in placeNever mind... Figured it out after tearing into my wife iPhone 4. The silver tab had fallen out of my EMI shield but pressed back into the shield at the screw hole with the tab facing away from the camera.