Enable your phone’s built-in spam protection
Turn on caller ID and spam filtering
Block unknown or private numbers
Silence calls from unknown callers
Register your number on the National Do Not Call Registry
Report spam calls to your carrier
Use your carrier’s spam-blocking app or service
Install a trusted call-blocking app
Manually block repeat spam numbers
Do not answer or call back suspicious numbers
Avoid sharing your number unnecessarily
Check privacy settings on online accounts
Ask your carrier about number change options if needed