We should have seen this sooner as I just remembered that Steve Jobs himself FAILED at his own demo during iPhone 4 launch.
As you can see in the video, Steve Jobs is holding the iPhone 4 in the “palm” of his hands (1:29) during the demo. That could explains why he’s demo failed.
If you also look carefully, the iPhone 3Gs actually loads website slowly while the iPhone 4 drops signal completely, consistent with recent iPhone 4 reception problems.
It’s ironic now that he would tell customers to hold it the “right way” when in fact, he held the iPhone 4 the “wrong way” at iPhone 4 launch.