If the phone rings and the caller ID says important call, it isn't.
Mine does'nt let me know anything but the number unless it is one I have in memory and then it tells me the name, I ignore all the rest.
This is a fairly recent development; it may have to do with the provider changing hands.
But a guy named Spam Risk tries calling my cell on a regular basis from a variety of little towns in the region where I don't know anyone. He sure gets around.