With all of the hype about the iPhone 4's antenna issues I am surprised that there has not been a wave of products that will enhance, boost or improve the signal in any way. The only focus on improvement seems to be passive, which is to keep your fingers off of the antenna. Is there no aftermarket solution for signal improvement? I am guessing that there is not or we would all be talking about which products enhance the signals better than others. I think there has to be a way to have a "material" make contact with the antenna and effectively increase the size by incorporating this material into the case. What about a seperate battery powering an active antenna booster? What do you guys think?