Hopefully it's just an opening day fluke, but I've had an unusual number of dropped and failed calls this morning with my iPhone 4. Edge, 3G, wi-fi on, wi-fi off. Doesn't matter. And my bars are all over the place. The same is also true with my wife's new 4. My 3GS seemed to get better reception. In realize that it's anecdotal, but it's frustrating. Anyone else having this trouble?