http://www.youtube.com/watch?v=tNmXrVNeGzs In this video above, an iPhone 4 user demonstrates how the recently found antenna ploblem on the recently released iPhone 4 not only effects the reception on his phone, but also how it effects the transmtion of his voice during a call. Using nothing but his finger, he swipes down the phone untill the voice quality degrades, eventually his voice isn't even audible. He goes on to explain the process, The effect his finger causes when he moves it down the iPhone 4 is pretty bad. Even more worse is, this may mean it has nothing to do with the software, but a design flaw Apple iPhone 4 users will be stuck with. Hopefully the rumored Ios 4.1 will sort this out.