This newish phone I got (since May) has this feature in it, that some incoming calls get killed, with the number listed as xxx-xxx-xxxx 'potential spam'. Anyone know how the phone ascertains this, and how, other than calling back the number, one might actually ascertain whether the call was spam, rather than say a robocall from the library telling you that your held books had arrived? Email account spam filters actually leave the 'spam' emails in a file that allows you to read the messages (and mark them as non-spam, if you wish).