The tech support over the phone aren't knowledgeable at all. My bf and I were new to iPhone and iTune Apps downloading. It was our first time sharing apps since we're in the same household. Everything worked fine until we saw updates on our iPhones and tried to click download. It always prompted us to enter the security code on the back of the credit card for verification. Once we entered it, we were bounced back to the download screen. When we clicked download again, same thing happened... so we called.... (now we know that we needed to log on to each other's itune account on our iPhones once. ) We got to speak with a representative pretty quickly and selected iTune related issues on the automated system. He did not seem to have a clue and kept us on the phone for nearly 30 minutes. We had to go somewhere so we hung up... We called again. A lady picked up. After long waiting, she finally returned from researching, asking if we used Mac or Windows. We said Windows. She asked, "did you know how to add a user on the windows account?" I was puzzled, asking "you mean iTune account or WIndows account?" She said windows account. She said, you just need to add the other user to your windows user account. The iTune will then be able to recognize two accounts." I was pretty sure she got confused, and suddenly realized we might have to log on to each other's account on our iPhones just like we did with the iTune on computer.... problem solved... Now that I think about it... adding a windows user account?? Has she gotten common sense??