How to Block Spam Calls and Robocalls on Your Phone (2026 Guide)

Spam calls and robocalls have become one of the most persistent annoyances of modern mobile life. From fake IRS agents and bogus warranty expirations to silent dialers that just want to confirm your number is live, unwanted calls waste time, drain attention, and increasingly put people at risk of fraud. The good news: between built-in phone features, carrier-level filtering, and a handful of trusted apps, you can dramatically cut down the noise. This guide walks you through exactly how to block spam calls on both iPhone and Android, how to use regulatory tools like the Do Not Call Registry, and how to protect your number from ending up on spammer lists in the first place.

What Are Spam Calls and Robocalls?

Spam calls are unsolicited phone calls made to large volumes of people, typically for marketing, scams, or data harvesting. Robocalls are a subset of spam calls that use automated dialing systems to play pre-recorded messages or connect you to a live agent only after you engage.

Not all automated calls are illegal. Legitimate robocalls include appointment reminders, school closure alerts, prescription notifications, and fraud alerts from your bank. The problem is the illegal variety: fake tech support, car warranty scams, IRS impersonators, and overseas call centers using spoofed local numbers to trick you into answering.

Why You're Getting So Many

Your phone number circulates through dozens of channels: data broker lists, breached databases, online forms, loyalty program signups, and public records. Once a number is confirmed active (even by you saying "hello"), it gets sold and resold. Spoofing technology lets scammers display any caller ID they want, which is why you often see calls that look like they come from your own area code or even your own number.

How to Block Spam Calls on iPhone

iPhones have several layers of built-in protection. Combining them is the most effective approach.

1. Silence Unknown Callers

1. Open Settings.
2. Scroll to Apps → Phone (on older iOS, just Phone).
3. Tap Silence Unknown Callers.
4. Toggle it on.

Calls from numbers not in your Contacts, recent outgoing calls, or Siri Suggestions will be silenced and sent straight to voicemail. They still show up in your Recents list, so you can call back legitimate callers.

2. Block Individual Numbers

1. Open the Phone app and tap Recents.
2. Tap the (i) icon next to the unwanted number.
3. Scroll down and tap Block this Caller.

Blocked numbers can't call, text, or FaceTime you. Manage your list under Settings → Apps → Phone → Blocked Contacts.

3. Enable Call Filtering Apps

iOS allows third-party apps like Hiya, Truecaller, Robokiller, and your carrier's own app to identify and block known spam numbers. Enable them under Settings → Apps → Phone → Call Blocking & Identification.

4. Use Focus Modes

Focus modes (Do Not Disturb, Work, Sleep) let you allow calls only from specific contacts or favorites. This is a powerful nuclear option during meetings or at night.

How to Block Spam Calls on Android

Android's exact menus vary by manufacturer (Samsung, Google Pixel, Xiaomi, OnePlus), but the core options are consistent.

1. Turn On Caller ID & Spam Protection

1. Open the Phone app.
2. Tap the three-dot menu and select Settings.
3. Tap Caller ID & spam (or Spam and Call Screen on Pixel).
4. Enable See caller & spam ID and Filter spam calls.

Filtered calls won't ring, won't send notifications, and go straight to voicemail, but remain visible in your call history.

2. Use Google Call Screen (Pixel)

Pixel phones let Google Assistant answer unknown calls on your behalf, ask who's calling and why, and show you a real-time transcript. Scammers typically hang up immediately.

3. Block Numbers Manually

1. Open Phone → Recents.
2. Long-press (or tap) the number.
3. Select Block / report spam.

4. Block Unknown Numbers Entirely

Under Phone → Settings → Blocked numbers, enable Unknown. Any caller not in your Contacts will be blocked. Use with caution if you expect calls from delivery drivers, doctors, or new clients.

Carrier-Level Spam Blocking

Most major carriers now offer free spam-blocking services that work at the network level, meaning scam calls are stopped before they ever reach your phone.

Carrier	Free Service	Premium Option
AT&T	ActiveArmor (basic)	ActiveArmor Advanced ($3.99/mo)
Verizon	Call Filter (basic)	Call Filter Plus ($3.99/mo)
T-Mobile	Scam Shield (basic + block)	Scam Shield Premium ($4/mo)
Vodafone (UK/EU)	Secure Net	Varies by market
Rogers / Bell (CA)	Call Control	Included on most plans

Check your carrier's app store listing or dial their support line to make sure these services are enabled on your account. In most cases they're free but opt-in.

Best Third-Party Apps to Block Spam Calls

If built-in and carrier tools aren't enough, dedicated apps use crowdsourced databases of billions of reported numbers.

Top Picks

• Hiya — Clean interface, strong free tier, used by many carriers under the hood.
• Truecaller — Massive global database, excellent in Asia, Europe, and the Middle East.
• Robokiller — Famous for its "Answer Bots" that waste scammers' time with funny recorded personas.
• Nomorobo — Originally for landlines, now strong on mobile; free for VoIP lines.
• YouMail — Visual voicemail with robocall blocking.

Pros and Cons of Third-Party Apps

Pros:

• Much larger spam databases than built-in tools
• Real-time caller ID for unknown numbers
• Reverse lookup features
• Advanced features like voicemail transcription

Cons:

• Most require access to your contacts, which can be a privacy trade-off
• Premium features often locked behind subscriptions ($3–$5/month)
• Some apps have been criticized for sharing contact data

Read privacy policies carefully before installing. If you're privacy-conscious, stick with carrier and OS-level tools first.

Register With Do Not Call Lists

Government registries don't stop scammers (they ignore the law anyway), but they do stop legitimate telemarketers from calling you.

• United States: donotcall.gov — free, permanent.
• United Kingdom: Telephone Preference Service (TPS) at tpsonline.org.uk.
• Canada: National DNCL at lnnte-dncl.gc.ca.
• Australia: Do Not Call Register at donotcall.gov.au.
• EU: Many member states operate equivalents (e.g., Bloctel in France).

Register all your numbers, including landlines. Expect a 30-day activation window before legitimate telemarketers must stop calling.

How to Stop Robocalls Before They Start

Blocking is reactive. Protecting your number is proactive. Here's how to keep your digits off spammer lists in the first place.

1. Use a Secondary or Masked Number

Services like Google Voice, Apple's Hide My Email (for email), and burner apps let you hand out a disposable number for online forms, loyalty signups, and one-time contacts. Your real number stays private.

2. Shorten Links You Share Publicly

When you post contact links on social media, QR codes, or business cards, use a privacy-respecting link shortener so you can track clicks, update destinations, and avoid exposing underlying parameters that data brokers scrape. Lunyb is one option that keeps analytics private and doesn't bundle invasive tracking. For a broader comparison, see our best URL shorteners guide.

3. Opt Out of Data Brokers

Sites like Spokeo, Whitepages, BeenVerified, and Intelius publicly list your phone number alongside your name and address. Manually opt out of each one, or use a removal service like DeleteMe, Kanary, or Incogni.

4. Never Press a Button to "Opt Out"

If a robocall says "Press 9 to be removed from our list," don't. Pressing any key confirms your number is live, and you'll get more calls, not fewer. Just hang up.

5. Don't Say "Yes"

Some scams record your voice saying "yes" and use it to authorize fraudulent charges. If a caller asks "Can you hear me?" hang up.

What to Do If You Already Answered a Scam Call

1. Hang up immediately if you suspect a scam.
2. Don't call back any number from a suspicious voicemail.
3. Block the number and report it as spam in your phone app.
4. Report to authorities: FTC (reportfraud.ftc.gov) in the US, Action Fraud in the UK, or your national equivalent.
5. Monitor your accounts if you gave away any personal information, and consider a credit freeze.

STIR/SHAKEN and the Future of Call Authentication

STIR/SHAKEN is a technical framework that carriers use to verify that a call's caller ID hasn't been spoofed. In the US, Canada, and parts of Europe, it's now mandatory for major carriers. When you see a green checkmark or "Verified" label next to an incoming call, that's STIR/SHAKEN at work.

It doesn't eliminate spam, but it does make spoofing much harder. Over time, unverified calls will become easier to filter out automatically. Expect spam call volumes to continue dropping as the framework matures and gets enforced against smaller voice providers.

Quick Comparison: Blocking Methods

Method	Cost	Effectiveness	Privacy Impact
Built-in iOS/Android filters	Free	High	None
Carrier spam blocking	Free–$5/mo	Very High	None
Third-party apps	Free–$5/mo	Very High	Moderate (contact access)
Do Not Call Registry	Free	Low (scammers ignore)	None
Block unknown callers	Free	Very High	None (but misses legit calls)

FAQ

Why do I keep getting spam calls even after blocking them?

Spammers use spoofing technology to rotate through thousands of fake caller ID numbers. Blocking one number does nothing to stop the next call from a different spoofed number. That's why network-level filtering and features like "Silence Unknown Callers" are far more effective than blocking individual numbers.

Does *61 or *77 block spam calls?

On landlines, *60 and *77 can block anonymous or specific numbers depending on your carrier. On mobile, these codes vary and are largely obsolete. Use your phone's built-in block list and carrier app instead.

Is it safe to use free spam-blocking apps?

Mostly yes, but read the privacy policy. Apps that ask for full contact access upload your address book to improve their caller ID database, which means your friends' numbers end up on a server somewhere. If that's a concern, use iOS/Android built-in tools plus your carrier's app only.

Can I block calls from a specific area code?

Not natively on most phones, but apps like Call Control, Hiya, and Mr. Number allow pattern-based blocking (entire area codes, prefixes, or international calls). Some Android phones from Samsung and Xiaomi have this built in under advanced call settings.

Will my phone number ever be fully spam-free?

Realistically, no. As long as phone networks allow calls from unauthenticated sources, some spam will get through. However, by combining OS filtering, carrier blocking, careful sharing of your number, and data broker opt-outs, most people can reduce spam calls by 90% or more. The goal isn't zero; it's turning a daily annoyance into a rare blip.

Final Thoughts

Blocking spam calls isn't a one-click fix, but it also isn't rocket science. Spend 15 minutes today enabling your phone's built-in silence-unknown feature, turning on your carrier's spam filter, and registering with your country's Do Not Call list. Then adopt a few long-term habits: don't give out your real number on random forms, use link shorteners and masked emails for public-facing contact, and never engage with robocall prompts. Within a few weeks, you'll notice a dramatic drop in unwanted calls, and the ones that do slip through will be easier to ignore.