Pwer to phone, but no display

linda, it is possible that the "teeny tiny piece of white plastic" may have been essential. After all, the iPhone is full of those pieces. The #3 connector is for the earpice speaker and proximity sensor. You should try and check your display on a different phone, to determine if it is okay. Also, it would help if you could post an image from here. Make sure that your battery is indeed a battery for the 3g, double check all of your work. If you need the connector on the logic board repaired, contact " hectordtruong" on here. He does board level repair and has a great blog about the repair of connector #3. Search by his user name. His email is in his profile.