Use iPhone's Built-In Scam Likely Filter

Your iPhone can identify and block calls marked as "Scam Likely" automatically through your carrier. This feature works without downloading an app — it's built into your phone's calling system. When your carrier detects a call pattern that matches known scam behavior, it labels the call as "Scam Likely" and can send it straight to voicemail or block it entirely.

To turn on this protection, open Settings, tap Phone, then scroll to Call Blocking & Identification. You'll see options from your carrier — usually labeled something like "AT&T Call Protect," "Verizon Call Filter," or "T-Mobile Scam Shield." Tap the carrier option and toggle Filter Unknown Calls or Block Scam Calls to on. The exact wording depends on your carrier, but the result is the same: calls flagged as scams won't ring through.

This filter catches many scams, but not all. Scammers constantly change their tactics, so some fraudulent calls will still get through. The filter is your first line of defense, not your only one.

Key Takeaways

  • Your carrier's built-in filter can block calls marked as "Scam Likely" automatically — turn it on in Settings > Phone > Call Blocking & Identification.
  • Unknown callers can be silenced entirely by toggling "Silence Unknown Callers," which sends calls from numbers not in your contacts to voicemail.
  • You can manually block individual numbers by opening a call, tapping the info icon, and selecting "Block This Caller."
  • Third-party apps like Nomorobo, RoboKiller, and Whoscall offer additional filtering beyond your carrier's protection, though some charge a monthly fee.
  • Never answer calls asking for personal information, passwords, or payment — hang up and call the organization directly using a number from their official website.

Silence All Unknown Callers at Once

If you want a more aggressive approach, iPhone lets you silence every call from a number not in your contacts. Open Settings, go to Phone, and toggle on Silence Unknown Callers. Unknown numbers will go straight to voicemail without ringing your phone.

This stops almost all scam calls because scammers typically use spoofed or unfamiliar numbers. The trade-off is that legitimate calls from doctors' offices, delivery services, or people calling you for the first time will also go to voicemail. Check your voicemail regularly — real callers will leave a message, and you can call them back.

This setting works best if most of your incoming calls come from people already in your contacts. If you're job hunting, waiting for callbacks from services, or expecting calls from unfamiliar numbers, this approach may block calls you actually need.

Block Individual Numbers Manually

When a scam call gets through, you can block that specific number so it never calls you again. Open the Phone app, find the number in your recent calls list, tap the information icon (a circle with an "i"), and scroll down to Block This Caller. Tap it, then confirm.

Blocked numbers can still leave voicemails, but you won't be notified and the messages won't appear in your inbox. If you change your mind, go to Settings > Phone > Blocked Contacts to see your full list and unblock anyone.

Manual blocking works for repeat offenders, but scammers rarely call from the same number twice. They use different spoofed numbers for each call, so blocking one number stops only that particular call. This method is useful for blocking a specific business or person, not for stopping scam campaigns.

Add Third-Party Filtering Apps for Extra Protection

Your carrier's filter catches many scams, but third-party apps can catch more. Nomorobo is free and blocks calls from known robocall numbers. RoboKiller costs about $4 per month and uses artificial intelligence to identify scams in real time. Whoscall is free with optional paid features and identifies callers by looking up their number in a database.

These apps work alongside your carrier's filter — they don't replace it. read one from the App Store, follow the setup instructions (usually involving giving the app permission to access your call history), and it will start filtering calls when ready. Some apps show you who called and why they were blocked, which helps you understand what scams are targeting your area.

The downside is that some apps require a paid subscription for full features, and they use your phone's battery and data. If your carrier's built-in filter is already stopping most unwanted calls, a third-party app may not be necessary. If you're getting multiple scam calls per day, adding one is worth the small cost.

Recognize Common Scam Call Patterns

Scammers use predictable tactics. They claim to be from your bank, the IRS, Apple, Amazon, or a utility company. They say your account is compromised, you owe money, or a package is delayed. They create urgency — "act now or your account closes" — and ask you to confirm personal information, passwords, or payment details.

Real organizations never call asking for passwords or credit card numbers. Your bank won't call to verify your account by asking you to confirm your PIN. The IRS doesn't call about unpaid taxes — they mail a notice first. If a call sounds suspicious, hang up and call the organization directly using a number from their official website or your statement. This confirms whether the call was real.

Scammers often spoof local numbers or numbers that look like they're from a real company. Your caller ID might show "Apple Support" or a number that matches your bank's area code. Don't trust the caller ID alone — if you didn't initiate the call and something feels off, treat it as a potential scam.

Report Scam Calls to Your Carrier and the FTC

When you get a scam call, reporting it helps your carrier improve its filter and alerts authorities to new scam tactics. On your iPhone, open the Phone app, find the scam call in your recent list, tap the information icon, and look for a Report as Junk or Report Spam option. Tap it and confirm. This sends the number to your carrier's database.

You can also report scams to the Federal Trade Commission at reportfraud.ftc.gov. The FTC doesn't investigate individual cases, but reports help them track scam trends and warn the public. Include the phone number, what the caller claimed, and when the call came in.

Reporting takes a minute and helps protect other people from the same scammers. If you're getting repeated calls from the same number or pattern, reporting each one strengthens the case for blocking that operation.

What to Do If a Scammer Gets Your Information

If you accidentally gave a scammer your Social Security number, credit card number, or password, act quickly. For credit card fraud, call your card issuer when ready — the number is on the back of your card. They can cancel the card and watch for unauthorized charges. For Social Security number theft, place a fraud alert with one of the three credit bureaus (Equifax, Experian, or TransUnion) by visiting their websites. A fraud alert tells lenders to verify your identity before opening new accounts in your name.

Change your password when ready if you gave out a password to a scammer. If you use the same password for multiple accounts, change those too. Monitor your credit report for accounts you didn't open — you can check for free once per year at annualcreditreport.com.

Document everything: the phone number, the time of the call, what the scammer said, and what information you gave. Keep this record in case you need to file a report with police or dispute fraudulent charges later.

Frequently Asked Questions

Why do scammers keep calling if I've blocked them?

Scammers use different phone numbers for each call, often spoofing numbers to look local or legitimate. Blocking one number stops only that specific call. Your carrier's filter and third-party apps work better because they identify scam patterns rather than individual numbers, catching new numbers before they call you.

Does "Silence Unknown Callers" block legitimate calls?

Yes — any call from a number not in your contacts goes to voicemail. Doctors, delivery services, and people calling you for the first time will be silenced. Check your voicemail regularly and call back legitimate callers. If you're expecting calls from unfamiliar numbers, turn this setting off temporarily.

Can I get scammed just by answering a call?

No. Answering a call doesn't expose your information or allow malware to install on your phone. Scammers need you to give them information or click a link they send. Hang up on suspicious calls without saying anything beyond "no" — don't confirm your name, account number, or that your number is active.

Are third-party call-blocking apps safe?

Reputable apps like Nomorobo, RoboKiller, and Whoscall are safe, but they do access your call history and contacts. Read the privacy policy before installing. Avoid unknown apps with few reviews. Stick to apps from established companies or those recommended by your carrier.

What if a scam call comes from a number that looks like mine?

Scammers can spoof any number, including yours. If you get a call from your own number, it's definitely a scam — you can't call yourself. Hang up and don't call the number back. Report it to your carrier and the FTC.