I dunno Vic. I'd strongly suggest you exchange it. Now is the time, not 2 months from now when it's driving you crazy. You don't want to have to put it into Airplane mode all the time, just as a bandaid. That seems unrealistic, ya know.
Looks like we're getting to the source of the noise. WiFi or Cell.
Here's a crazy thought... What if this is related somehow to the altered antenna design. Hmmm. Just a thought
I know I probably should. I'm just concerned because what if the replacement has it also?