Just wanted to know if att's new program of giving discounts on newer phones(the iphone4 = $100) to people who have had older phones on the 2g network as motivation to switch them to the 3g network was a good one, I have recently bought one and have considered selling it. Mainly because the offer hasn't used my upgrade or renewed my account so I am free to get another at $200. So my question is it worth it to sell my current iphone4 and get another with my upgrade?