Manually block spam calls (the least effective option ... the FCC allows opting out of telemarketing calls by registering mobile and landline numbers on the National Do Not Call Registry.

Dorothy Wiza, 91, has been bombarded with spam calls. She asked Public Investigator for some tips to deal with them.

Try this on your landline ... on the suspicious number then select "Block/report spam." Keep in mind that you will undoubtedly miss some legitimate calls when this mode is on, but unknown callers ...

So, the question is, how do you block spam calls? There are several ways in which you can block and report spam calls. Solution 1: Activating DND on your number You can block all spam calls and ...

Quick tip: There are also a number of methods you can use to stop spam calls on iPhone or Android. To learn how to mitigate a clogged inbox, read our article on stopping spam email. How to ...

WSJ’s Dalvin Brown walks through how you can adjust iPhone settings to silence spam callers as well as some third-party apps that can help block unwanted calls. Illustration: Michael Ray ...