Hey, I currently have an Iphone 4, but I am looking to sell it because I am in need of money for summer classes. If i go back to a regular phone which I currently have, will there be a problem calling ATT to take the data plan off? Will I have to pay any early termination fees? I do not want to cancel my contract, but only go down to a normal phone so I dont have to pay $30 a month for data and hopefully make some decent money selling my iphone. Thank in advance guys.