We bit the bullet and upgraded our iPhone 4 to the surprise iOS 4.0.1 update — but not before grabbing some screen caps of our phone's signal strength indicator before AND after the fix went in:
Wow, what a difference twenty minutes makes! In fact, let's overlay the before-and-after signal bars:
Again: the dimmer bars are BEFORE the firmware upgrade, the brighter bars are AFTER. Which only tells us that our phone reception sucks even worse than we thought.
Maybe the old "weighted" display version is better, from a psychological standpoint. The new version is just flat-out depressing. We predict a nation of i4 adopters suddenly waving their phones in the air, trying to get a signal that wasn't even there in the first place…