Scammers can use the internet to make calls from all over the world. They don’t care if you’re on the National Do Not Call Registry. That’s why your best defense against unwanted calls is call blocking.
Which type of call-blocking or call-labeling technology you use will depend on the phone — whether it’s a mobile, traditional landline, or a home phone that makes calls over the internet (VoIP).
What Is Call Blocking?
When we talk about call blocking, we’re talking about technologies or devices that can stop a lot of the unwanted calls you get — like scam calls and illegal robocalls — before they reach you. Mobile phones, landlines, and home phones that use the internet (VoIP) each have their own call-blocking options. Just know that call-blocking services could block some legitimate calls.
Some companies also offer call labeling. Call-labeling services show categories like “spam” or “scam likely” on your phone’s display for incoming calls. Then you can decide whether to answer the call.
Download a call-blocking app
One of the best ways to block unwanted calls on a mobile phone is to download a call-blocking app. A call-blocking app acts like a filter. The company behind the app uses call data or reports from users to predict which calls are illegal or likely scams. The app then intercepts those calls before they reach you. Some apps are free, but others you have to pay for.
To get a call-blocking app:
- Go to the online app store for your phone’s operating system (iOS, Android, etc.) and look at ratings for different apps.
- Look online for expert reviews on call-blocking apps.
- You also can find a list of call-blocking apps for mobile phones at org, a website for the U.S. wireless communications industry. The site lists apps specific to Android, BlackBerry, iOS (Apple), or Windows devices.
Apps typically let you choose how to respond to calls flagged as scams. Calls might:
- be stopped
- ring silently
- go straight to voicemail
Apps also can let you do things like:
- block calls based on the geographic location or area code of the incoming call
- let you create blacklists of numbers to block, or whitelists of numbers to let through
- send a prewritten text message to the caller
- file a complaint with the FTC (which you also can do at gov/complaint)
See what built-in features your phone has
Many cell phones come with menu options that let you block calls from specific numbers, though there might be a limit to how many numbers you can block. Mobile phones also typically have features like Do Not Disturb, where you can set hours during which calls will go straight to voicemail.
See what services your carrier offers
Check your phone carrier’s website or call customer service to find out what call-blocking services it offers or recommends. Some services are free, but others might charge you a fee.
Install a call blocking-device
If your home phone is a traditional landline that doesn’t use the internet (VoIP), you can buy and install a call-blocking device. Call-blocking devices are typically small boxes you attach to your phone.
Some devices use blacklist databases of known scam numbers but let you add numbers you want blocked. Other devices rely on you to create and update your own blacklist of numbers to block.
Some use blacklists to:
- stop unwanted calls
- divert calls to voicemail
- show a blinking light when an unwanted call comes in
- connect callers to a recording with options so a real caller can still get through
Some devices also use whitelists of approved numbers. That helps you limit which calls get through, or let’s you set up “do not disturb” hours during which calls go straight to voicemail. There are also devices that try to weed out robocalls by playing a prerecorded message prompting callers to press a number to continue the call.
See what services your carrier offers
Some services are free, but some charge a fee.
What About Robocalls?
If you answer the phone and hear a recorded message instead of a live person, it’s a robocall.
Robocalls trying to sell you something are illegal unless you’ve given the company your written permission to call you that way. If someone is already breaking the law by robocalling you without permission, there’s a good chance it’s a scam. At the very least, it’s a company you don’t want to do business with.
Call blocking can help stop robocalls from scammers. But some robocalls might still get through. If you get an illegal robocall, hang up. Don’t press a number, which could lead to more robocalls.Some robocalls are legal and don’t require your permission, like purely informational messages, political calls, or calls from charities. But if they try to also sell you something on the call, it becomes an illegal robocall.
Report Unwanted Calls
Report the number that appears on your caller ID — even if you think it might be spoofed or faked — and any number you’re told to call back. The FTC analyzes complaint data and trends to identify illegal callers based on calling patterns. We also use additional information you report, like any names or numbers you’re told to call back, to track down scammers.
We take the phone numbers you report and release them to the public each business day. This helps phone carriers and other partners that are working on call-blocking solutions. Your reports also help law enforcement identify the people behind illegal calls.