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

Spam calls and robocalls have become one of the most annoying — and dangerous — digital nuisances of the decade. From fake IRS agents to bogus car warranty offers and AI-generated voice scams, unwanted callers waste your time, drain your battery, and sometimes steal your money. The good news: with the right combination of phone settings, carrier tools, and smart habits, you can block the vast majority of spam calls in minutes.

This guide explains exactly how to block spam calls and robocalls on your phone in 2026, whether you use iPhone or Android, and how to keep your number off spammers' lists in the first place.

What Are Spam Calls and Robocalls?

A spam call is any unwanted call from a person or system trying to sell, scam, or phish. A robocall is a specific type of spam call that uses an automated dialer to play a pre-recorded message or connect you to a live agent once you answer. Not all robocalls are illegal (appointment reminders and school closures are legitimate), but the vast majority — an estimated 60–70% — are unwanted or fraudulent.

Common types of spam calls include:

• Robocalls — automated pre-recorded messages
• Neighbor spoofing — caller ID faked to match your area code
• Phishing/vishing — voice scams asking for personal or banking info
• AI voice cloning scams — impersonating relatives in distress
• Silent calls — used to verify your number is active

How to Block Spam Calls on iPhone

Apple provides several built-in tools that stop most spam before it ever rings your phone. Here's how to turn them on.

1. Silence Unknown Callers

This feature automatically sends any number not in your contacts, recent outgoing calls, or Siri Suggestions straight to voicemail.

1. Open Settings > Apps > Phone.
2. Tap Silence Unknown Callers.
3. Toggle it ON.

Trade-off: legitimate calls from doctors, delivery drivers, or new contacts will also be silenced, but they'll still leave voicemail.

2. Enable Call Filtering by Your Carrier

1. Go to Settings > Apps > Phone > Call Blocking & Identification.
2. Enable your carrier's spam-detection app (e.g., AT&T ActiveArmor, T-Mobile Scam Shield, Verizon Call Filter).

3. Block Individual Numbers

Open the Phone app > Recents > tap the (i) next to any number > scroll down > Block this Caller.

4. Use a Third-Party Spam-Blocking App

Apps like Hiya, Truecaller, RoboKiller, and Nomorobo integrate directly with iOS. Install one, then enable it under Call Blocking & Identification.

How to Block Spam Calls on Android

Android's approach depends on your phone manufacturer, but Google's default Phone app offers powerful, free protection.

1. Turn On Caller ID & Spam Protection

1. Open the Phone app.
2. Tap the three-dot menu > Settings > Caller ID & spam.
3. Enable See caller and spam ID and Filter spam calls.

Filtered calls won't ring, won't send notifications, and will go straight to voicemail — but you can still review them under Recents.

2. Enable Call Screen (Pixel Phones)

Google Pixel users have Call Screen, which uses Google Assistant to answer unknown calls, ask who's calling, and transcribe the response in real time. Enable it under Phone > Settings > Spam and Call Screen.

3. Block Numbers Manually

In the Phone app, long-press any recent number and choose Block / report spam.

4. Samsung Smart Call & Bixby Text Call

Samsung Galaxy phones include Smart Call, powered by Hiya, which auto-identifies and blocks suspected spam. Turn it on under Phone > Settings > Caller ID and spam protection.

Best Spam-Blocking Apps Compared

If your built-in tools aren't enough, a dedicated app adds a massive spam database and AI detection. Here's how the top options compare in 2026:

App	Free Plan	Paid Plan	Best Feature	Platforms
Hiya	Yes	$3.99/mo	Auto-block premium filter	iOS, Android
Truecaller	Yes (ads)	$2.99/mo	Largest global caller database	iOS, Android
RoboKiller	7-day trial	$4.99/mo	Answer Bots waste scammers' time	iOS, Android
Nomorobo	Landline free	$1.99/mo mobile	Real-time robocall blocking	iOS, Android
YouMail	Yes	$5.99/mo	Smart visual voicemail	iOS, Android

Pros and Cons of Third-Party Apps

Pros:

• Massive shared databases identify new spam numbers within hours
• Advanced features like reverse lookup and voicemail transcription
• Cross-device syncing

Cons:

• Most require access to your contacts and call log
• Subscription fees add up
• Free tiers often show ads or upsell aggressively

Use Your Carrier's Free Spam Protection

All major U.S. carriers — and most international ones — now offer free spam-blocking services thanks to STIR/SHAKEN caller authentication rules.

Carrier	Service	Cost
AT&T	ActiveArmor	Free (Advanced: $3.99/mo)
T-Mobile	Scam Shield	Free (Premium: $4/mo)
Verizon	Call Filter	Free (Plus: $3.99/mo)
Google Fi	Built-in spam filter	Free
EE / Vodafone (UK)	Network-level scam blocking	Free

Activate them via your carrier's app or by dialing shortcodes like #662# (T-Mobile scam block) — free, fast, and effective.

Register with the National Do Not Call List

Legitimate telemarketers are legally required to honor do-not-call registries. Registration takes 30 seconds and is free.

• USA: donotcall.gov
• UK: Telephone Preference Service (tpsonline.org.uk)
• Canada: lnnte-dncl.gc.ca
• Australia: donotcall.gov.au

Note: this won't stop illegal robocallers or overseas scammers — it only reduces legitimate telemarketing.

Advanced Tactics to Reduce Spam Calls

1. Stop Sharing Your Number Publicly

Spammers scrape phone numbers from social profiles, resumes, business listings, and data broker sites. Remove yours from anywhere it isn't essential, and use a masked or secondary number for signups.

2. Use a Burner or Secondary Number

Services like Google Voice, Hushed, or Apple's Hide My Email equivalents let you give out a number that forwards to your real phone. When it starts getting spam, replace it.

3. Never Interact with Robocalls

Don't press "1 to speak to an agent" or "2 to be removed." Both confirm your number is active and worth reselling. Simply hang up.

4. Opt Out of Data Broker Sites

Sites like Whitepages, Spokeo, and BeenVerified sell your phone number. Manually opting out — or using a service like DeleteMe or Kanary — dramatically reduces new spam.

5. Be Careful with Short Links and Web Forms

Malicious short links in text messages are a top delivery vector for phishing that leads to phone-based scams. Always preview unknown links before clicking. If you shorten links yourself for business or personal use, choose a reputable provider like Lunyb, which offers transparent, malware-scanned short URLs so recipients trust what they're clicking. You can learn more in our honest Lunyb review or compare options in our 2026 URL shortener buyer's guide.

How to Report Spam Calls

Reporting helps carriers and regulators build blocklists that protect everyone.

1. Forward spam texts to 7726 ("SPAM") on most U.S. and UK networks.
2. File an FCC complaint at fcc.gov/complaints (U.S.).
3. Report to the FTC at reportfraud.ftc.gov.
4. Use your phone app's "Report Spam" button — this trains the AI filter.

Protecting Yourself from Voice Phishing (Vishing)

Blocking calls stops most nuisance, but modern scammers use AI voice cloning to impersonate banks, bosses, and even family members. Follow these rules:

• Never verify personal info over an inbound call. Hang up and call the official number.
• Set a family safe word — a phrase only you and loved ones know, to defeat AI cloning scams.
• Enable multi-factor authentication on your bank and email so a stolen number alone can't compromise accounts.
• Use encrypted DNS or a private browser on your phone to reduce tracking that fuels targeted scam calls.

Quick Checklist: Block Spam Calls in Under 10 Minutes

1. Enable Silence Unknown Callers (iPhone) or Filter Spam (Android).
2. Activate your carrier's free spam-blocking service.
3. Install one trusted spam-blocker app (Hiya, Truecaller, or RoboKiller).
4. Register on your country's Do Not Call list.
5. Opt out of major data broker sites.
6. Forward junk texts to 7726.
7. Set a family safe word for AI voice scams.

FAQ

Does *61 or *77 actually block spam calls?

*61 forwards calls from the last incoming number to voicemail on some landlines, and *77 blocks anonymous callers on some U.S. landlines. Neither is reliable for modern mobile spam, which uses spoofed or rotating numbers. Use your phone's built-in filter and carrier tools instead.

Why do I still get spam calls after joining the Do Not Call registry?

The registry only stops legitimate telemarketers who follow the law. Scammers, robocall operators overseas, and political/charity calls are exempt or simply ignore it. Combine the registry with carrier blocking and a spam app for real protection.

Is it safe to answer and immediately hang up on spam calls?

No. Even a brief answer confirms your number is active, which can increase future calls. Let unknown numbers go to voicemail — legitimate callers will leave a message.

Can spam-blocking apps see my contacts and calls?

Most request access to your contacts and call log to identify unknown numbers. Read the privacy policy carefully. Reputable apps like Hiya and Nomorobo anonymize data; others sell it. If privacy matters, stick to built-in iOS/Android and carrier tools, which process data on-device or within the carrier network.

Will factory resetting my phone stop spam calls?

No. Spam calls are tied to your phone number, not your device. A reset only wipes the software. To reduce calls, you must change habits, tighten filters, or ultimately change your phone number as a last resort.

Final Thoughts

You can't eliminate 100% of spam calls — scammers evolve too quickly — but with 10 minutes of setup, you can silence 90%+ of them. Turn on your phone's built-in filter, activate free carrier protection, add one trusted app, and stop feeding spammers your number in the first place. Your ears, your battery, and your bank account will thank you.