How to block spam calls on iPhone

Almost everything you need is already on your iPhone, on one screen: Settings, then Apps, then Phone. From there you can send unknown numbers straight to voicemail, have the phone ask an unknown caller why they're calling, silence calls your carrier has flagged as spam, and block a number for good. Here is each one, with what it takes care of and what it leaves behind.

How do you block spam calls on iPhone?

Open Settings, scroll to the bottom, tap Apps, then tap Phone. Four options on that screen do the work: Screen Unknown Callers, Call Filtering, Call Blocking & Identification, and Blocked Contacts.

Steps verified on iOS 26, September 2026.

1. Open Settings and scroll to the bottom — Tap Apps. Per-app settings moved into this list in recent versions of iOS, so Phone is no longer near the top of Settings.
2. Tap Phone — Every setting on this page lives on this one screen. If you cannot find a row by name, use the search box at the very top of Settings and type the name.
3. Decide how unknown callers are handled — Tap Screen Unknown Callers. The three choices are explained in the next section.
4. Turn on call filtering — Tap Call Filtering to handle missed calls from unknown numbers and carrier-identified spam separately.
5. Check your blocked list — Tap Blocked Contacts to see every number you have blocked, and to remove one you blocked by mistake.

On iOS 18 these options sit under Settings › Apps › Phone in a section called Call Silencing and Blocked Contacts; on iOS 17 and earlier, look under Settings › Phone. iOS 27 started rolling out in September 2026 — if a row has moved after updating, the search box at the top of Settings will find it by name. Source: Apple Support, "Manage unknown callers on iPhone" (support.apple.com/en-us/111106).

How do you silence unknown callers on iPhone?

Open Settings › Apps › Phone, tap Screen Unknown Callers, and choose Silence. Calls from numbers that are not in your contacts stop ringing and go to voicemail instead.

Steps verified on iOS 26, September 2026.

1. Open Settings › Apps › Phone
2. Tap Screen Unknown Callers
3. Choose one of the three options — Never means calls from unsaved numbers ring like any other call. Ask Reason for Calling screens the call — the caller is asked why they're calling before your phone rings. Silence silences those calls and sends them to voicemail.
4. Get into the habit of checking once a day — Silenced calls still show up in Recents and in your voicemail, so nothing is thrown away. You simply stop being interrupted.

What this takes care of

• Automated dialers and unknown numbers stop ringing your phone
• Anyone saved in your contacts still rings normally
• Silenced calls are kept in Recents and voicemail, so you can look through them later

What it leaves behind

• A legitimate caller you have not saved — a pharmacy, a doctor's office, a delivery driver — is silenced along with the rest
• A number you have recently texted or emailed may still ring through, because iPhone treats that as a prior interaction
• It sorts callers by whether they are in your contacts, not by what they want

Source: Apple Support, "Manage unknown callers on iPhone" (support.apple.com/en-us/111106).

What does Ask Reason for Calling do?

It is the call screening option Apple added in iOS 26. Rather than silencing an unknown caller, your iPhone asks them why they're calling, and then rings you with what they said, so you can decide before picking up.

Steps verified on iOS 26, September 2026.

1. Open Settings › Apps › Phone
2. Tap Screen Unknown Callers
3. Tap Ask Reason for Calling
4. When an unknown number calls, read the reason and decide — Your phone rings with the caller's answer on screen. You can answer it, or let it go.

What this takes care of

• You find out something about an unknown caller before you answer
• A recording playing a sales pitch usually does not get past the question
• A legitimate caller you have not saved gets a chance to identify themselves instead of being silenced

What it leaves behind

• It asks once, at the start — after the call connects, the screening is done
• It passes along whatever the caller says without judging whether it is true
• Apple notes that screening is turned off for 24 hours after you contact emergency services, and does not work while roaming internationally

This is a genuinely useful free feature, and it sits alongside a screening service rather than replacing one. We put the two side by side on our Apple Call Screening comparison page, linked below. Source: Apple Support, "Manage unknown callers on iPhone".

How do you filter calls your carrier has flagged as spam?

Open Settings › Apps › Phone › Call Filtering. Tap Spam to silence calls your carrier has identified as spam or fraud, and tap Unknown Callers to move missed calls from unsaved numbers into their own list.

Steps verified on iOS 26, September 2026; carrier free tiers checked September 2026.

1. Open Settings › Apps › Phone › Call Filtering
2. Tap Spam — Calls your carrier has identified as spam or fraud are silenced. This depends on your carrier sending that label, so it only helps if your carrier provides it.
3. Tap Unknown Callers — Missed calls from numbers that are not in your contacts move into a separate list, which keeps your main Recents readable.
4. Install your carrier's free app for better labeling — T-Mobile Scam Shield, Verizon Call Filter and AT&T ActiveArmor all have free tiers that identify and block known spam numbers. They use different data from your iPhone's own setting, so running both is not redundant.
5. Switch the app on under Call Blocking & Identification — Go to Settings › Apps › Phone › Call Blocking & Identification. This row only appears once a call-blocking app is installed. Turn the app on, and tap Edit to set the order if you have more than one.

What this takes care of

• Numbers that other people have already reported get labeled or silenced before you hear them
• Costs nothing on the free tier of all three major carriers
• Works at the network level, so it catches some calls before your phone does anything

What it leaves behind

• A list can only know about numbers somebody has already complained about, so a scammer's brand-new number arrives looking clean
• It labels and silences; it does not find out what the caller wants
• How much gets labeled varies by carrier and by month

Each carrier also sells a paid tier with extra caller ID features. The free tiers are enough for the blocking described here.

How do you block one specific number on iPhone?

Open the Phone app, tap Recents, tap the information button next to the number, scroll to the bottom, and tap Block this Caller.

Steps verified on iOS 26, September 2026.

1. Open the Phone app and tap Recents
2. Tap the ⓘ button to the right of the number — If the caller is in your contacts, open the contact card instead.
3. Scroll to the bottom and tap Block this Caller, then confirm
4. To review or undo it, go to Settings › Apps › Phone › Blocked Contacts — Tap Edit to remove a number from the list.

What this takes care of

• That exact number can no longer call, text, or FaceTime you
• Useful against one persistent caller who keeps using the same number

What it leaves behind

• It is one number at a time, and operations that rotate through fresh numbers outrun it
• Blocking is private to your phone — it does not report the number to anyone

Junk texts are separate: open the conversation from an unknown sender in Messages and tap Report Junk, which sends the number and message to Apple and your carrier. To report an unwanted call, use the short form at DoNotCall.gov, or ReportFraud.ftc.gov if money was lost.

Where Gini fits in on an iPhone

Gini answers the unknown calls on your behalf. Your calls are forwarded to Gini using the call forwarding your carrier already supports, so Gini picks up before your phone rings, works out what the caller wants, and passes through the ones that matter.

It answers instead of labeling

The built-in settings decide whether a call rings. Gini takes the call: automated dialers and obvious scams are handled before your phone makes a sound, and a real caller gets through.

It keeps listening after you answer

Some scammers are real people who sound legitimate and talk their way past any screen. When a connected call turns risky — a request for a verification code, pressure to act right now — Gini raises a warning while you are still on the line.

Texts and email get watched too

Gini scans your texts and your Gmail and flags the ones that look like scams. It does not write or send anything for you — you decide what to do with a flagged message.

Setup uses standard carrier call forwarding, so there is no new number and no switching carriers, and it works alongside the settings above rather than replacing them. What people tend to describe afterwards is a quieter phone: far fewer strangers getting through, and a voicemail box that stops filling up with junk. There is a 7-day free trial, and current plans are listed on the pricing page.

Is there a free spam call blocker for iPhone?

Yes, and you already have most of it. Screen Unknown Callers, Call Filtering and your carrier's app are all free, and between them they cover the numbers that are already known to be spam.

Paid blocking apps mostly buy you a larger database of reported numbers. That is worth something, but it is the same kind of protection, not a different kind.

• Screen Unknown Callers — free, built in, the single biggest change you can make in a minute.
• Call Filtering — free, built in, silences carrier-identified spam and tidies your missed calls.
• T-Mobile Scam Shield, Verizon Call Filter, AT&T ActiveArmor — free tiers, better spam labeling than the phone alone.
• Blocking and reporting — free, and reports are what keep the shared spam lists current for everybody.

What do these iPhone settings still miss?

They sort callers by whether the number is saved or already reported — not by what the caller actually wants. The call that gets through is the one from a number no list has seen yet.

That is the gap that matters for the calls that cost people money. Impostor scams were the largest fraud category the FTC tracked in 2025: people reported losing $3.5 billion to them, and nearly one in three fraud reports was an impostor scam. Among older adults who reported losing $10,000 or more to a business or government impostor in 2024, 41% said a phone call was the first contact.

A brand-new number placing its first call is invisible to a blocklist, and a silencing setting treats it exactly like a call from a new pharmacy. Somebody has to pick up and find out which one it is.

Sources: FTC press release on 2025 imposter scam losses, June 2026; FTC Data Spotlight, August 2025.

Frequently Asked Questions

How do I stop spam calls on my iPhone without missing important calls?

Ask Reason for Calling is the middle ground. Instead of silencing every unsaved number, your iPhone asks the caller why they're calling and shows you the answer before you pick up, so a pharmacy or a doctor's office can identify itself. If you use Silence instead, check Recents and voicemail once a day — silenced calls are still there.

Where is Silence Unknown Callers on my iPhone? I can't find it.

On iOS 26 it is inside Settings › Apps › Phone › Screen Unknown Callers, where Silence is one of three options. On iOS 18 the switch is under Settings › Apps › Phone in a section called Call Silencing and Blocked Contacts, and on iOS 17 and earlier it is under Settings › Phone. If it has moved again, type the name into the search box at the top of Settings.

Does Silence Unknown Callers block the calls?

No — it silences them and sends them to voicemail. The call still happens, it just does not ring, and it still appears in Recents. Blocking is separate and applies to one number at a time, under Block this Caller.

Why do some unknown numbers still ring after I turned Silence on?

Because your iPhone treats a recent interaction as a reason to let a number through. If you have texted or emailed that number, a call from it can still ring even though it is not saved as a contact. Blocking the number stops it outright.

Is Apple Call Screening the same thing as Gini?

They overlap and then diverge. Apple's Ask Reason for Calling asks an unknown caller one question and rings you with the answer, which is a real improvement and costs nothing. Gini answers the call itself, works out what the caller wants, handles automated and obvious-scam calls before your phone rings, and keeps analyzing a connected call for scam patterns after you pick up. We lay out the differences on our comparison page.

Do I need a spam blocker app on my iPhone?

Not before you have turned on the free options. Screen Unknown Callers, Call Filtering and your carrier's free app cover known spam numbers between them. A paid app mostly buys a larger database of reported numbers — the same kind of protection, applied more widely.

How do I report a spam call on my iPhone?

For an unwanted call, use the short reporting form at DoNotCall.gov. If money was lost, or you have details about who called, report it at ReportFraud.ftc.gov. For a junk text, open the conversation from the unknown sender in Messages and tap Report Junk, which sends it to Apple and your carrier.

Will screening stop my iPhone from ringing for family?

No. Contacts you have saved come straight through, and Gini is aimed at the unknown numbers. If you forward your calls to a screening service, the people in your life ring your phone the way they always did.

Keep going

The rest of the guide, and how screening compares with what your phone already does.

• How to stop spam calls — the full guide — All four layers, from free settings to the Do Not Call Registry to screening.
• Gini vs. Apple Call Screening — What Ask Reason for Calling does, what a screening service adds, side by side.
• The National Do Not Call Registry — How to register free at donotcall.gov, and why some calls keep coming anyway.
• Call forwarding by carrier — How forwarding works on AT&T, T-Mobile, Verizon and their MVNOs.
• Blocking spam calls on Android — The same steps for the other kind of phone, in case you set one up for family.

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