Interesting that people are talking like calls are only on cellphones nowadays. I still have a landline because it works out as a better value to have the triple play package than a double play without phone. Most robocalls come through there, annoyingly enough. And only on the FIOS landline does it ever get labeled "SPAM?" Nomorobo was great, until spammers started spoofing your local exchange about a year ago.
Never see any spam identified on the cell screen, though I do occasionally get calls. I think T-Mobile is doing better at prevention.