I've followed some of the iPhone 4 news and found the antenna issue interesting. Users have shown that covering the lower left corner with your hand apparently bridges and "shorts" the antenna and causes the signal strength to decrease. So I tried gripping my Inc (has a Verizon soft case) in different ways and gripping the lower half of the phone in the palm of my hand causes it do drop anywhere from 5 to 15 dB in signal strength. Interestingly, gripping the upper half doesn't effect it. So I guess we need to watch how we hold these too in areas of poor signal strength.
