Hi, I just got my white iPhone 3G 2 days ago and I love it!!!! I have one question regarding 3G. I notice that it switches from 3G to EDGE sometimes. Is there a reason why it does that? It's not like I'm going somewhere that's out of the 3G area. I can leave the phone there on my table and after a while I notice it switches to EDGE. I have to get to settings, turn 3G off and then on again for it to be on 3G again. Does anyone know why it does this? Thanks!