How to Block Spam and Robocalls on Your iPhone

If your phone seems to ring constantly with calls from numbers you do not recognize — sometimes three or four a day — you are not alone. The FTC (Federal Trade Commission) receives hundreds of millions of robocall complaints every year, and older adults are among the most frequent targets. The good news: your iPhone has a built-in tool that can silence most of these calls automatically, and a few free steps can dramatically reduce what gets through.

This guide walks you through every option available to iPhone users in 2026, from the built-in settings that take 30 seconds to enable, to free third-party services, to blocking a specific number after you have already received a spam call.

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Why you get so many spam calls

Robocallers use automated systems that dial millions of numbers every day. They use "neighbor spoofing" — making the caller ID show a number that looks local — to trick you into picking up. Answering confirms to the system that your number is active, which can lead to even more calls.

The safest rule: if you do not recognize a number, let it go to voicemail. A real person who needs you will leave a message.

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Option 1 — Silence Unknown Callers (built into iPhone, free)

This is the single most effective step you can take in under a minute.

Go to **Settings → Phone → Silence Unknown Callers** and turn the toggle ON (it will turn green).

When this setting is active, any call from a number that is not already in your Contacts, your recent outgoing calls, or Siri's suggestions from your Mail or Messages history will be silenced automatically. The call goes to voicemail without making any sound. If it is important, the caller will leave a message.

What you do not lose: calls from your doctor's office, a pharmacy, or anyone else whose number you have saved in Contacts will still ring normally.

What to keep in mind: if a business or person you want to hear from calls from an unfamiliar number, their call will also be silenced. Check your voicemail regularly so you do not miss anything important.

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Option 2 — Use Nomorobo (free) or Robokiller (paid) for stronger filtering

Apple's built-in filtering is good, but dedicated apps can identify and block known robocall numbers even before they reach your phone.

To use it: 1. Download Nomorobo from the App Store. 2. Open the Nomorobo app and follow its setup steps. 3. Go to **Settings → Phone → Call Blocking & Identification** on your iPhone. 4. Under "Caller ID & Spam," turn on the Nomorobo toggle. Your iPhone will now use Nomorobo's database to screen incoming calls.

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Option 3 — Block a specific number after you receive a spam call

If a specific number keeps calling you, block it directly:

1. 1Open the **Phone** app and tap **Recents** (the clock icon at the bottom).
2. 2Find the spam number in your list of recent calls.
3. 3Tap the **"i" circle** to the right of the number.
4. 4Scroll to the bottom of the screen and tap **"Block this Caller."**
5. 5Tap **"Block Contact"** to confirm.

That number will never be able to call, FaceTime, or text you again. You can review and remove blocked numbers anytime under **Settings → Phone → Blocked Contacts**.

Note: if a robocaller is spoofing numbers (using a different number each time), blocking individual numbers is less effective. They will call again from a different number. In that case, Silence Unknown Callers or a filtering app like Nomorobo will serve you better.

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How to report spam calls to the FTC

Reporting unwanted calls helps the FTC build cases against illegal telemarketers and robocallers. It takes about two minutes:

1. 1Go to **donotcall.gov** in your phone's browser, or search "FTC Do Not Call" in Safari.
2. 2Tap **"Report Unwanted Calls"** and follow the steps.
3. 3Enter the number that called you, the date and time, and a brief description of what the caller wanted.

You can also report calls at **reportfraud.ftc.gov** if the call appeared to be a scam — for example, someone claiming to be the IRS, Social Security Administration, or a fake tech support company.

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What the Do Not Call Registry does — and does not do

You may have registered your number on the national Do Not Call Registry (donotcall.gov). Registering is still worth doing, and registration never expires. However, it is important to understand its limits:

• The registry reduces legitimate telemarketing from law-abiding U.S. companies. Most real businesses check the list before calling.
• The registry has no effect on illegal robocallers. Criminals making illegal calls do not follow the law — that is what makes them criminals. These are the calls that bombard most people today.

In short: register your number, but do not expect the registry alone to stop robocalls. The built-in iPhone settings and filtering apps in this guide are what actually reduce the volume of unwanted calls day to day.

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How to tell if a call is from a scammer

Even with the best filters, some spam calls will get through. Here are the warning signs that a call is a scam rather than a legitimate caller:

• **Urgency:** "You must act now or face arrest / your account will be closed / your Social Security number will be suspended." Real government agencies send letters first.
• **Gift cards or wire transfers:** No legitimate business, government agency, or utility company will ever ask you to pay with gift cards or wire money to a stranger.
• **"Your computer has a virus":** No caller can detect a virus on your computer remotely. Hang up.
• **Claiming to be the IRS or Social Security:** The IRS contacts people by mail first. The Social Security Administration does not call and demand immediate payment.
• **Too-good-to-be-true prizes:** If you have to pay anything to claim a prize, it is a scam.

The safest response to any suspicious call: hang up. You can always call back using a number you find yourself on the official website.