I'm 90% sure it's coincidence, but the fact that Apple decided to release their first iPhone bumper/case, and in iOS4 removed the field test mode that showed numeric signal strength, does make me wonder.<p>It's going to be interesting to see how this all turns out, but I'm disappointed in many of the news sites who are now badging it as an issue with displayed strength. I have an iPhone 4, live in an area with good signal strength, and "bridging the gap" with my finger absolutely does decrease voice quality and decimate data throughput.