Very easy to demand of cellular carriers which phone #s went dark and STAYED dark. Hence the trying to pin it on CINC: the numbers probably ARE that horrific.
I read that there were a few places people could go to recharge their devices. I don’t know if that affected cell phones. It was almost a week before my son contacted his brother on the mainland, and he lives near San Juan. Also see my comments 66 and 67. I was traveling for a week and only just saw this thread.