Just got a cellular iPad Air complete with preinstalled Sprint SIM. When I try to activate it stated something like "cannot activate this automatically with the SIM installed. Install a SIM from a company for which we can activate". (I'm vague on the wording as I popped the SIM out and then popped my free T-Mobile one in, and it's currently in the process of restoring). Anyway, what's up with the Sprint activations? If I had bought T-Mobile and was trying to put a Sprint SIM in, then I could see more of a potential for a conflict. But heck this shipped with the Sprint SIM, and it cannot be activated with it? Wonder if it's just a bad SIM? Thoughts?