For nearly a week, I was unable to send / receive emails and browse internet using EDGE. Not a single message or website. But I can do that with WIFI. Today I called Apple iPhone support, after waiting for 15 minutes on the line I got something like "it's not an iPhone issue (obviously it's not), and maybe it's some provision of my account by AT&T". I just can't believe that my data plan was limited with an "unlimited data plan"?! My "usage" of iPhone indicates I have received 286MB and sent 41.6MB through EDGE accumulatively after over 2 months of use. Is this too much? I wasn't be able to get through the support of AT&T because they're off right now. I'm gonna call them tomorrow morning. But is there anyone with the same experience as mine? How do you resolve this? Is there really a "limitation" for that "unlimited" data plan? P.S. Just in case someone will think I did something with my iPhone... I had never hacked / unlocked my iPhone, never installed any 3rd party app.