Remember Apple’s Commercial where they show you that they have apps for almost anything in the world, now they even have iPhone App for their reception issue! Haha, it is a real app, although not made by Apple, it is use to show the reception and how Apple API view the reception.
So by using the Kung-Fu Grip on iPhone 4, iOS 4 really sees it as no reception thus showing 0 reception in the app, this will be a issue because Data and Voice will be affected, dropping calls should be happening too.
Hopefully Apple’s software update will solve this issue, of at least how iOS 4 look at the problem when people touches both side of the antenna! [TUAW]
Check out the iPhone 4 Reception App in this YouTube Video: