If you have a rattle when your phone vibrates, take it in and replace it! I received my 64gb White Verizon model, and I noticed the rattle on my own before reading forums. Took it to Apple store, and they replaced it but it still had the rattle. Went back again the next day, and demanded another replacement. Finally got a flawless iPhone 4S. Dont let the Genious BS you with excuses, demand a replacement. Plenty of the 4S do not have the vibrate rattle, so don't settle for one that does. Again this is only advice for people who actually care about the rattle during vibrate. Verizon Activation Tip: I have never been able to activate a iPhone in the Apple store with Verizon. Since my Apple store is in a Mall they always tell me to go to the Verizon kiosk and activate it there. And when I did go to them they wanted me to pay $20 for them to do it. DO NOT PAY THEM, unless you don't care about money. Just call the 1-800 number that pops up when you try the *228 on your phone. They'll activate it for free over the phone instantly.