Now it's official.
Thank you Consumer Reports for doing your job. As for Apple...
I'm not saying this is a design flaw because there are people out there whose iPhone 4s work fine, but there's obviously enough people out there now complaining about the problem to warrant looking at some kind of defect in specific batches of phones.
We need a recall based on serial number. It just can't be a software problem if some phones are working and others aren't. All of the iPhone 4s have the same software, so in theory they should all be affected, but they are not. Therefore, logic dictates that there is something physically wrong (antenna, sim card, etc.) with some of the phones.
Apple, get your head out of your ass and fix the problem. I know you're in short supply, but you owe it to your insanely loyal customer base to admit the problem and fix it.