I don't disagree that the signal goes down if held in a certain position with the iPhone 4. I just think we might all not have noticed it had they not implemen

I don't disagree that the signal goes down if held in a certain position with the iPhone 4. I just think we might all not have noticed it had they not implemented the 3G signal meter "feature" in OS 2.1, since the signal degradation might be only 1 bar (see: anandtech's article with numbers). In real practice, my calls get killed because of the proximity sensor issue from my face, not the antenna degradation from my hand.