Remember Antennagate, when the iPhone 4 first came out and everyone freaked out because holding it in a certain way hurt reception?
It's not a huge surprise, seeing as the form factor for the AT&T and Verizon phones are pretty much the same.
They do say, however, that a bumper or case fixes the problem, and that other than this one issue the phone is excellent.
So if you're still interested in the phone, don't let it scare you off, just be aware of what you're getting into.
Via Consumer Reports