How to block "Unknown Caller" ID
I'm receiving annoying calls with an "Unknown Caller" ID. I've tried copying the name to my caller block list, but it wouldn't take. Next, I resorted to creating contacts for "Unknown Caller" by first and last name, but that failed. Finally, I assigned a silent ring tone to the contact by the name "unknown caller" but was amazed when the phone still rang. My only recourse is what I've always done, simply not answering any calls tagged "unknown caller" but I need to know if I've exhausted all of my options.