You can block spam calls from iPhones by filtering out unknown callers or blocking specific numbers.

Block individual number

Locate the robocall number in your Phone app's Recent Calls list to block it. Next, tap on the "i" icon at the right of the number to select "Block Contact" in the options list.

By installing app to stop spam calls these scams are sure to be on your list of most annoying things. Telemarketers and, more commonly, automated robocallers have a way of interrupting you at any moment. While they can be annoying, spammers should not be ignored.

Although the do not disturb function is helpful, it does not stop robocallers from trying to reach you. These scams bring in millions, if not hundreds of thousands of dollars each year. A survey of more than 4,000 people revealed that robocalls have become more common. These scams are especially common in older age groups.

It is easy to stop spam calls by installing any of these tools:

• Mr. Number: This app is available in the Google Play and App Store. It can block calls from any area code or entire country. To warn others, you can also report spam calls.
• AT&T Call Protect: A free service for AT&T customers, this app has a fraudulent-call-blocking system that weeds out scammers before the phone even rings. It is available on Google Play and in the App Store.
• Verizon Call FilterIn the last year, Verizon introduced a Neighborhood Filter service for its customers. Based on the area code and number, it identifies scam calls. Spoofing is a technique that prevents similar phone numbers from calling you.

Spam calls can be brushed-off

It is tempting to answer the phone and shout, "Don’t call me again!" Experts predict that robocallers will consider the number inactive and less likely to call back again. You should not call an unknown number again. It can expose you to future scams.

Warn relatives

Most people are aware that scammers call you asking for money from the IRS. Your 10-year-old child and your grandparents, as well as your parents and grandparents, may be being tricked. 39% of robocallers claim they are from the Social Security Administration.

Tell your family members who are vulnerable not to divulge any information to strangers calling out of the blue. If they insist it is legitimate, tell them to hangup and call the organization directly. Remember: Understanding how to block spam calls is only one step in avoiding scams. Don't forget how to stop spam text messages to your most vulnerable loved ones.

Nomorobo and other apps offer call-blocking for landlines. You might be able block certain numbers by calling your landline carrier. Consider purchasing a call blocking device if all else fails. These devices are pre-programmed and come with thousands of spam numbers. You can add new numbers as soon as they become available. These devices may not be as up to date as software-based services.