I have a iphone 3g for att, I have been using it since november no issues, until friday night I went to disneyland in anaheim, my phone kept displaying searching, no service, or 1 bar with no att logo or 3g or edge next to it. I live out in LA and since friday my phone been acting up doing this repeadly, I took it to apple got it replaced the new unit does the same issue, I have restored the phone got a replacement Im out of ideas wondering what are the issues that are causing this. Another side note the 3g service when it does work is horribly sluggish.