No. I got the number when I signed up with T-Mobile 5 years ago. Bout the same time, I had signed up with Vonage and I never had a problem with the CNAM since way back then. Now that I'm with Voipo, I still don't have the problem with the CNAM and my cell phone. My wife also has T-Mobile and my name comes up on that one as well. Well, now I changed it in the vPanel so her name will come up, but before that, it still didn't have that problem.