If you use AT&T Wireless

[Guard Dad]

They have an app and a service called Active Armor. If your plan includes it, you can download it from the app store if not already on your phone. Once you go in and set it up, you can tell it to ignore calls that are Fraud Risk, and even Spam Risk. Once I did that, it was almost stopped my spam calls. I think I've gotten two in the last month.

You can set it to filter texts as well.

They also have a premium version, but I'm happy with the free one.

 

[Boss 302]

That is standard in iPhones under settings ->phone->silence unknown callers.

 

[Guard Dad]

That is standard in iPhones under settings ->phone->silence unknown callers.

Same with Androids, but this is different. It specifically filters out numbers t hat have been reported as spam or fraud.