Thank you, Mr Jobs could've asked me and I would've "solved" the problem lolz. But those designers always try to do something original and completely from the ground up. If they look at past experiences they may learn a thing or two.

On a side note, a friend was one of the first and I've tested the i4 here in Australia. And I don't know if she was "lucky" but there is no signal problem that I warned her about.
My conclusion = Better reception (no bars dropped) due to less traffic from competitors' signals or Australia's "3" network is much better than AT&T.

And the "3" network isn't even that good, its mediocre. The best is definitely Telstra with its "Next G" (3.5G?), then Vodafone (3G), then 3 & Optus (3G), then the minor companies, in terms of availability and speed.

And also the "bridging" is a big problem when it is actually a problem. There is no middle-point where it somehow "degrades" the call quality (as I've read many times) but can cause dropped calls, calls not going through or calls not coming through ... if your in a bad signal area.
I see it as a "designer fault" since it can stop calls coming in if your playing a game/App (bridging due to hand contact) OR making a call if you're left handed talker OR dropping a call if you need to take down a note via the phone (transferring it to your left hand & ear while you write with your right).

@Benson
Due to the difficulty of the topic/my explanation it seems there was a communication mishap. I will respond to your post later with some illustrations.