First post I got the iphone for xmas from the wife I was in shock as it was out of the blue. Anyway, been enjoying this forum and a few others. One thing I wanted to pass on that I found interesting today that I have not seen anywhere else. Actually I was going crazy and even chatted with AT&T to figure out what was up with it. My wife and a friend noticed when I called they got "private caller" or "Blocked number" when I called them. The At&T person could not figure it out. I went to AT&T site and searched Caller ID and found some other phone had setting to turn it on or off. HMMM.. I quick check of the settings and sure enough there is a setting that you can turn on or off your id when calling someone. Go to Settings, Phone (scroll down a little) - Show My Caller ID. You can turn it on or off. Turn it on and it shows the person you call the ID, turn it off and you get the caller blocked or Private number. So my helpful hint and first post all in one. Hope it helps someone. It would have helped me while looking for it Great bunch of people here by the way. Look forward to learning more and more about the phone.