I just got my iPhone 4S and my older 4 has already been sold and I need to ship it. I know that you can use a paper clip etc to get the SIM card slot open..... BUT ..... I CAN'T!!! I have tried it all and for some odd friggin reason it will not open up. Question: Do I really need to take my old SIM out? It doesn't have any of my numbers on it anything I dont think. Is there a security risk in leaving this in there and sending it to another party?