Free Guide to Understanding Unwanted Calls

What Are Unwanted Calls and Why Do They Happen

Unwanted calls are telephone calls you receive that you did not request. They come in many forms: robocalls (automated calls), telemarketing calls, scams, surveys, debt collection calls, and calls from organizations you've never contacted. According to the Federal Communications Commission (FCC), Americans receive billions of unwanted calls each year. In 2023 alone, over 50 billion robocalls were placed to U.S. phone numbers—that's roughly 150 robocalls per person annually.

These calls happen because phone numbers are relatively easy to obtain. Companies buy phone number lists from data brokers, or they use random number generators to dial thousands of numbers at once. Scammers and legitimate businesses alike use these tactics. Your phone number may appear on these lists after you enter it on a website, sign up for a service, make a purchase, or simply because it was randomly generated.

The technology behind unwanted calls has become more sophisticated. Caller ID spoofing allows callers to display a fake number on your phone—often one that looks local or official. This tricks people into answering. For example, a scammer might display a number starting with your own area code or make it look like it's coming from a bank or government agency.

Different types of unwanted calls have different purposes. Legitimate telemarketing calls are trying to sell you products or services. Debt collection calls are attempting to collect on debts. Political and charitable calls may be seeking donations or votes. Scam calls are trying to steal money, personal information, or both. Understanding which type of call you're receiving helps you know how to respond.

Takeaway: Unwanted calls are common because phone numbers are easy to obtain and calling technology is inexpensive. Recognizing the different types helps you decide whether to answer, ignore, or report the call.

How to Identify Unwanted Calls Before Answering

Learning to spot unwanted calls before you pick up the phone can save you time and stress. Several warning signs appear on your phone's screen or in the caller's behavior that indicate an unwanted call.

First, pay attention to your caller ID. Numbers that look suspicious include those with obvious patterns (like 555-0123), numbers that match your own area code and exchange (the first 6 digits), or numbers displaying vague names like "Unknown Caller," "Out of Area," or generic business names. If you don't recognize the number and weren't expecting a call, it may be unwanted. However, some legitimate callers also use blocked numbers, so this alone isn't definitive.

Listen for caller ID labels your phone provider adds. Many phone companies now mark calls as "Likely Spam," "Scam Likely," "Telemarketer," or "Blocked." These labels come from call-filtering databases and alert you to potential problems. If your phone displays any of these labels, the call is almost certainly unwanted.

Timing can also be a clue. Unwanted calls often come during typical business hours (9 a.m. to 9 p.m.), though scammers now call at all hours. If you receive multiple calls in short periods or repeated calls from the same number you don't recognize, these are patterns typical of unwanted calls.

If you do answer, listen for immediate red flags in the first few seconds. Robocalls often begin with silence, then connect to a recorded message or operator. Legitimate businesses usually greet you by name or have a human answer quickly. Callers with heavy accents reading from scripts, callers asking for personal information right away, or callers claiming you've won something you never entered are common scam indicators.

Takeaway: Use your caller ID display, pay attention to spam labels from your phone company, and watch for patterns in calling behavior. These tools help you decide whether to answer without ever picking up the phone.

Do Not Disturb Tools and Phone Features

Modern smartphones and phone services include built-in features specifically designed to reduce unwanted calls. Understanding which tools are available on your device helps you block or screen calls before they interrupt you.

Most smartphones have a "Do Not Disturb" mode that silences all incoming calls and notifications. When activated, only contacts you've marked as favorites can reach you. This is useful during work, meetings, or sleep. Android phones access this through Settings > Notifications > Do Not Disturb. iPhone users find it in Settings > Focus or Settings > Do Not Disturb. You can schedule this feature to activate automatically during specific times each day.

Call filtering and blocking features are available through your phone itself or your carrier. These work by comparing incoming numbers against known spam databases. AT&T offers AT&T Call Protect, Verizon offers Call Filter, T-Mobile offers Scam Shield, and smaller carriers offer similar services. Most are free, though premium versions exist. These tools automatically block or label suspicious calls before your phone rings.

You can also block specific numbers manually. After receiving an unwanted call, you can add that number to your phone's block list through your recent calls. On Android, open the Phone app, find the number, tap the three dots, and select "Block number." On iPhone, open Recent calls, swipe left on the number, and tap "Block this Caller." Blocked numbers go straight to voicemail, and you won't receive notifications.

Third-party apps provide additional filtering layers. Apps like Truecaller, RoboKiller, and Nomorobo work with your phone to identify and block suspected spam before it rings. These apps compare incoming calls against databases of known spam and scam numbers. Many are free with optional premium features.

Do not add your number to your phone's contacts with a fake name hoping callers won't recognize you own it. This doesn't prevent calls. However, you can add potential scam numbers to your contacts with labels like "Scam - Do Not Answer," which helps you remember not to answer if they call again.

Takeaway: Use your phone's built-in "Do Not Disturb," call filtering, and blocking features. These tools require no payment and work automatically without your intervention for most calls.

The National Do Not Call Registry and Reporting Mechanisms

The United States maintains a National Do Not Call Registry, a free service run by the Federal Trade Commission (FTC) and the Department of Justice. Since it launched in 2003, over 225 million phone numbers have been registered. The registry is a list of consumers who do not want to receive telemarketing calls.

Registering your number is straightforward and permanent. Visit www.donotcall.gov or call 1-888-382-1222 from the phone you want to register. Registration is immediate and remains active unless you remove it yourself. There is no cost. The registry prohibits telemarketing calls to your number, though some calls are legally exempt from this rule.

Exempt calls include those from political organizations, charities, surveys, and companies you've done business with in the past 18 months. Government agencies, charities, and political organizations can still call even if you're on the registry. Additionally, if you've given a company written permission to call, they may ignore the registry. Debt collection agencies and companies with whom you have an existing relationship may also still call despite the registry.

If you receive telemarketing calls after registering, you can file a complaint with the FTC at www.reportfraud.ftc.gov or call 1-877-438-4338. The FTC investigates patterns of illegal calls and pursues enforcement actions against repeat violators. Filing a complaint creates a record that may be used in legal actions against telemarketers.

For scam calls, reporting is important even though it won't stop the current call. You can report scams to the FTC at ReportFraud.ftc.gov, to your state's Attorney General office, to the FBI's Internet Crime Complaint Center at www.ic3.gov, and to the FCC at www.fcc.gov/complaints. Each agency maintains databases used to identify fraud patterns and pursue investigations.

Keep records of unwanted calls: the date, time, phone number, caller name, and what they said. This information strengthens reports and helps authorities understand the scope of the problem. Screenshots of caller ID displays are particularly useful documentation.

Takeaway: Register with the National Do Not Call Registry for free at donotcall.gov, and report violations to the