I was thinking, could the reason Apple was blindsided by this signal issue be that all of their field test devices were covered in lots of plastic to disguise them from the public? They had no chance to field test the possibility of hands covering those antenna gaps outside of the lab; and I, for one, have no issues with signal when trying to replicate this at an Apple store, as they must have strong GSM repeaters or more simply a MicroCell to boost signal for the store model 3G devices. As soon as I'm on the road or at home, holding the phone often results in the signal dropping or even being lost. When the bumper is put on, no more problem, for the most part. I'd love to be able to use this one naked like all three of the other phones.