So, I preordered a 4S on the 7th using a family member's upgrade. At the AT&T store where I preordered it, I was told since I used someone else's upgrade, I was going to need to activate the phone through AT&T customer support. But when I got my 4S on Friday, I didn't see that necessary; the included SIM was giving me No Service, so I just put in my SIM from the 4 and everything is working okay. But today, when I was looking on my AT&T account to see if I still had an unlimited plan, I noticed there were two unlimited plans: one for iPhone, the other for iPhone 4S. The one selected was just for iPhone, so I suspect that I'm not getting 4S data speeds. So, will I need to call AT&T customer support and get the included SIM activated, or am I wrong about the two different plans?