- [Man On Telephone] Long distance service.

- Oh gee, I can't talk right now.

- But in the cell phone era,

they've gotten a lot more advanced.

Robocallers can automatically dial your number

and human doesn't even get involved until you pick up.

For some of you, that probably means several

annoying calls a week.

But there are some things you can do to stop them.

Let's back up for a second though.

How do robocallers get your number in the first place?

There are a lot of tricks they use.

They can get your number from a variety of sources

like dialing 1-800 numbers, filling out forms online,

even charities will sell your phone number to third parties.

There's no foolproof way to prevent robocallers

from getting your number, but there are a few thing

you can do to mitigate the chances of it happening.

Treat your cell phone number like your

social security number or your credit card number.

Don't give it out to a party you don't trust.

If you have to give out your number,

use an alternative like maybe your work landline

or even a landline you have at home that you never answer.

But what if it's too late?

What if robocallers already have your number?

There are a few ways they trick you into answering.

One thing they do is spoof their number so it looks like

it's coming from the same area code.

You're more likely to answer a phone call from a neighbor

than a random number across the country.

Sometimes they'll even block the caller ID

so you're curious enough to pick up.

If you don't recognize the number calling you,

just don't answer.

No matter what trick they use to get you to answer,

it's annoying, but you can fight back.

First, if a robocaller gets to you,

you can block that number from calling you again.

It's actually really easy to do.

On iPhone, go to your recent calls and click on the "I"

next to the robocaller that just called you.

Then scroll down and click "Block this caller."

It's a little bit of a different process

depending on which Android phone you might have,

but go through your call log

and you should see the option to block it.

Android users also get an extra bonus,

Google software can automatically scan a number

before it calls you and let you know if it's spam or not.

Then you don't even have to answer.

The government can help you out too.

The FTC has a national do not call list

that you can enter your cell phone number into

and if a robocaller calls you anyway,

you can report them and they'll get fined.

Most wireless carriers offer tools to block spammers and

robocallers, so ask your carrier what they offer.

If all else fails, there are a few apps you can download

to your phone that promise to block robocallers.

RoboKiller and Truecaller are two popular options.

They charge a monthly fee,

but they promise to block 90% of robocalls.

RoboKiller has a cool feature that lets you send messages

back to robocallers so you can give them

a taste of their own medicine.

- [Phone Voice] You just called me

in a local training exercise mode.

- [Male Voice] No I did not.

- [Phone Voice] I trained for six months to go onto

America's Got Talent.

- Unfortunately, there's no way to block

100% of the robocalls you receive.

They're constantly finding new ways to get to you.

But if you're smart and proactive,

you can drastically reduce the amount you receive.

- [Phone Voice] So you feel like giving like an honest

opinion on whether you think my voice is nice or not.

Are you cool with that?