I am wondering if maybe the EDGE and 3G networks are fighting each other on the iPhone rather then playing nice. It would be great if we could TURN OFF EDGE, just like you can TURN OFF 3G, but unfortunately Apple didn't put this option in the phone. Here's what's happening to me. My condo is on the 5th floor of a 6 story building with floor to ceiling windows. I have PERFECT reception! Download speed test on DSLR reports about 600kbps most of the time. However, I notice my phone will revert to EDGE every once in a while. The 3G network will just completely die and the phone will switch to EDGE. When it does that I always know because the speaker buzzing starts happening. I got woken up at 2AM with this since my iphone is plugged into the computer, and it's very close to the computer speakers. This happens a lot, and I'm not sure why it would do this, but it's getting on my nerves. Last night it happened twice and it woke me up while sleeping. I hope AT&T and Apple can get their **** together and get this fixed because it seems to be an obvious problem that a lot of people are having. If you can't fix it, then at least give us the option to turn off EDGE!