Marc -- I've been an unlimited data customer with AT&T for 3-4 years using a BB with the enterprise plan (I was linked up to my work account). I just purchased the Samsung Nexus S this past week and am using my current SIM card. I've had no problems with my service. My question is: Do I need to notify AT&T about this switch? My only concern is AT&T doesn't offer/support the Nexus S and I'm wondering if I notify them about my change to an unsupported device, whether I will still be able to be grandfathered in. Thanks in advance.
P.S. I also PM'd you this question. Thought I'd post it to this thread as I'm anxious to get a quick response. Thanks.