So I bought an iPhone 3g 8gb off someone, right now i am not using it other than as an itouch, but i have noticed there is some dust under the screen. Being the picky person i am i am considering taking it in to apple. So i have the original purchasers receipt at rogers, I am assuming i need to take it into rogers to get replaced, not apple, but what i was thinking was to upgrade to a 16gb and pay the difference. Is this an option, or are they going to make me activate the new phone on the spot because i really dont want to start a plan until i get out of my bell one. Thanks