Does Poor iPhone 4 Design Cause Dropped Calls?

One of the featured tricks of the new iPhone 4 is that its metal frame actually forms the antenna system for calls and wireless connections. It's clever, but there are reports that holding the phone actually blocks the signals. What's going on?

The stories appeared over at MacRumors in the forums at first, and then were given more spotlighted attention over at Gizmodo, where it was reported that many people could reproduce the effects. What appears to be happening is that the iPhone 4 display...