Hello Hope you can help I am selling my iphone 8gb 2g on ebay. I have had it for a while but upgraded to a 3g a while back. I kept my 2g phone for my girlfriend and she used it with with a gold number sim (ending in 999) for a while. Funily enough she never used the phone for calls, justfor surfing the net and for the apps store (she shared the Itunes account with me. My question is, that selling the iphone, with the sim. how can I de-register the gold sim from the ituns account so that the new user won't have access to he apps that i have paid for etc... Any advice greatly appreciated.