the G-man wrote:
Normally it would make sense for it to be Rick's delusion. But I'm not even sure that phone was visible from where Rick was standing. He had to go find it after it rang. Unless artistic license is at work here, that suggests it's real.
I'm in favor of it being Carol.
Did the phone scene remind anyone of Episode 1?
You know, "Hey. Dumb-ass. You in the tank."