I have an Apple iPhone 3G which was under AT&T and when I terminated and unlocked, I switched to Straight Talk's program - Bring your own Phone. ST has sent me a replacement sim card, but I do not know how to replace it. I removed the old sim card which was sitting on a cradle, but the new sim card I got just came with the metal piece only, not stuck to a card like, where I stick on to the cradle and then insert it into the iPhone. I tried to research on youtube.com but all the vides show just how to remove the cradle with the sim card from the phone. But it does not show how to replace the metal piece new sim onto the card slot. Does anyone know of any videos that show how to do this. thank u.