Ill just chime in here and say that I used 6.5GB of data last month and have received no such text or throttling.
So I'm not sure exactly where people say that 2-3GB is the cutoff point for the top 5%.
Same boat as you.
I usually go from 3 to 6 GB.
Never gotten anything. Last week I traveled to Lynchburg VA a college town. And while there I guess I went over 2 GB (looked online) and I got the text and email .
Needless to say I was pretty pissed since they just announced their new 3 GB plan. I called them up and asked what was going on. They gave me the usual pep talk about the 5%. Once I mentioned that this was actually not as high as I usually get he said that the pool of data varies by market locations.
I guess getting connected to the tower in Lynchburg with all the college kids send a flag on my account. Will see in the next few months if I still get tag while I am back home.
I do find it funny that everyone going over 2 GB on the unlimited seems to be getting the warnings right after they put the new packages into effect. They keep this shit up and I will just freaking drop my cell phone service all together, I don't really need it. Just nice to have.