[Samsung Galaxy Nexus] aharper:
I'm going to use this thread to track what I've been doing in the hopes that it can help others if they are dealing with VZW with this issue.

Dec/11 - bought the GNex new. Had the squealing problems and talked with the store I bought it from. They thought it was an app and suggested I make changes to my apps. I did that for a week or so and they finally exchanged the phone for new.

Jan/12 - new device arrives. Same trouble. I dropped the stock OS and went to the OKP OS. Same trouble. Figure I'll take notes for vzw and see if I can figure it out. What I found...

Seems to happen when talking with other mobile users, never to a land line. Later narrowed it down to only other vzw users, did not happen when talking to at&t users. Later narrowed it down that it only happens to other vzw users who are using the GNex device as well.

Called vzw last week after growing frustrated again. They had me do some troubleshooting on the device and re-provisioned my account. Same trouble. They sent me another new device. I put this device back to stock and relocked.

Feb/12 - 3rd device arrives. Stock OS, no apps installed. Had the same problem that same day. Called vzw the next morning and they had me put the device in safe mode so that they could determine if the problem was hardware or software. If you didn't know there was a safe mode now you know. Boot holding the down vol button until you're in the OS. Immediately had the same problem.

Called vzw back and demanded a different device. They told me they couldn't change the device because I was outside of 14 days. No kidding, I wouldn't be outside of 14 days if vzw hadn't been asking me to do all of this troubleshooting. I finally agree to pay full retail price if they credit my account for the past 3 months of troubleshooting. Nope. They make me upgrade eligible and I went a completely different direction to an iPhone hoping that this stupid squeal would be gone. I'll sell the GNex for close to retail on Craigslist at this point.

Mar/12 - iPhone is running for a day and I talk with my wife (GNex device). The squeal is there but MUCH SOFTER in volume. I will talk with my brother as I leave work tonight because I always have trouble with him on the phone. Hopefully this will help me know for sure.

What I think I'm finding is that it's not necessarily my GNex that had a problem... it's the reception from OTHER GNex users that is causing me the trouble. My wife has complained about the problem as well but at a much lesser frequency and only when on the phone with me. We don't talk on the phone that much. The curious piece is that my brother doesn't have the problem.

More to follow as I figure out for sure whether or not the iPhone has the same problem. If so then it's not my device, nevermind that I'm on my 4th device in 3 months. VZW has been entirely worthless through this process and has made me fight the entire way. Their customer service is horrible and the managers that I have been talking to should be fired. I can't believe they allow managers to talk with customers the way some of these guys do (especially this last Paul LaFranky dude (not sure about his last name)).