The organization's report stated that "With the Bumper fitted, we repeated the test procedure, placing a finger on the Bumper at the point at which it covers the gap below. The result was a negligible drop in signal strength - so slight that it would not have any effect, in our judgment." Consumer Reports went on to say that duct tape would also do the trick, and that in their opinion, any fix should be done at Apple's cost and should not come out of the consumer's wallet.
While this doesn't provide an answer for other reported problems such as the "proximity sensor issue" or the "Bluetooth headset issue," it does lend some strength to speculation that Apple could announce a giveaway of Bumpers to all iPhone 4 owners at tomorrow's press conference. An offer of a free Bumper to every iPhone 4 owner would be a much less expensive solution to the antenna issue than a full-scale recall of the devices.