The built-in Android settings, Pixel tools and carrier options that cut down robocalls.
In Google's Phone app, go to Settings, then Caller ID and spam, and switch on Filter spam calls.
In Samsung's Phone app, enable Caller ID and spam protection, then block all spam and scam calls.
Call Screen asks unknown callers who they are. On a Pixel 7 or newer it can screen calls automatically.
Block repeat numbers from recent calls, and use Do Not Disturb to let only contacts ring through.
Check your carrier's free tools and report unwanted calls at DoNotCall.gov or ReportFraud.ftc.gov.
Spam Calls Driving You Nuts? The Android Settings That Actually Stop Them