So as I was talking with my brother tonight on my iPhone 3G and I tried to check my RSS Feeds and nothing would show so I went into the app-store and got a error saying it could not access itunes. As I talked on the phone wifi would not work so I turned it off and 3G did work while in a call. Once the call was over wifi worked again! I was also on my laptop at the same time and checked to se if my network was down but it was not. So it only leaves me to believe that Wifi does not work on the iPhone when in a call! And that is lame!! Does anyone else have this problem?