iPhone: screening and filtering calls

Careful with the name before you start. Apple calls the feature Call Screening, but the setting you're looking for is called Screen Unknown Callers. Hunting for the words "Call Screening" in Settings is how people give up after two minutes.

Everything below is free and already on your phone. The words in bold are exactly what's on the screen.

Checked in October 2026 against Apple's own help pages, which describe iOS 26. An older iPhone, or one that hasn't been updated, may not show these menus. If the words below aren't on your screen, update the phone first, or ask someone to help you do it.

1. Screen unknown callers

This is the main one. Your phone answers calls from numbers you haven't saved, asks who's calling and why, and only rings if there's an answer.

1. Open Settings.
2. Tap Apps, then tap Phone.
3. Scroll to Screen Unknown Callers and choose: - Ask Reason for Calling. The phone answers and asks. You see the answer, then decide. This is the one to pick. - Silence. Straight to voicemail, and it appears in your recent calls. - Never. Off.

What it costs you. Every caller who isn't in your contacts has to talk to your phone first. Most automated systems won't: a pharmacy's robot refill reminder, an appointment confirmation, a two-factor code delivered by phone call. Those go to voicemail or vanish. A person calling from a hospital ward will usually answer the question, but a busy one may hang up.

Turn it off the same way, by choosing Never. Nothing is lost.

Two carve-outs Apple builds in, worth knowing: if you call 911, screening turns itself off for 24 hours so the callback gets through. And screening doesn't run at all while your phone is roaming.

2. Call filtering

Separate from screening. This moves calls out of your main list rather than answering them.

1. Settings, then Apps, then Phone.
2. Scroll to Call Filtering and turn on: - Unknown Callers. Removed from your recent calls and put in an Unknown Callers list. - Spam. Calls your phone company has labeled spam are silenced, sent to voicemail, and put in a Spam list.

What it costs you. Nothing is deleted, but it's somewhere you have to remember to look. To find it: Phone app, then Calls or Recents, then the filter button at the top right, then Unknown Callers or Spam.

If a real caller has been filtered, open that list, tap Mark as Known next to the call, then Mark as Known again. They'll ring normally from then on.

The spam label comes from your phone company, not from Apple. If you haven't turned on your carrier's free service, this filter has much less to work with. That's on the phone company page.

3. Filtering text messages

1. Open Messages.
2. Tap the Filters button, then Manage Filtering.
3. Turn on Screen Unknown Senders.

Do this next, on the same screen. Tap Allow Notifications and allow the categories you want, particularly verification codes. Otherwise the security code your bank texts you lands in a folder you aren't told about, at the exact moment you're waiting for it.

What it costs you. Messages from anyone you haven't saved go into a separate folder and don't notify you. A text from a delivery company, a new doctor's office, or a grandchild's new phone all land there quietly.

To rescue one: Messages, the Filters button, Unknown Senders, open the conversation, then Mark as Known. Apple notes that this also lets you open links and see images from that sender, which is why a legitimate message in that folder can look broken.

One limit worth knowing: filtering doesn't apply to anyone you've replied to three or more times.

4. Caller identification

1. Settings, then Apps, then Phone, then Call Blocking & Identification.
2. Turn on Business Call Identification, so calls from registered businesses show a name rather than a number.

What it costs you. Very little. It labels; it doesn't block. Note that what it labels depends on Apple's business directory and your carrier, so many real businesses still show as plain numbers.

5. Blocking one number after it calls

1. Phone app, then Recents.
2. Tap the i in a circle beside the number.
3. Scroll down and tap Block Caller.

What it costs you. Almost nothing, and almost nothing is gained either. Scammers change numbers constantly, often for every call. Blocking is worth doing for a harasser who keeps using one number, and it is close to useless against a scam operation.

What none of this does on an iPhone

A call faking a number you know rings straight through. Screening only holds back numbers that aren't in your contacts. If someone spoofs your daughter's number, your phone treats it as your daughter.

Nothing warns you once you've answered. Every setting on this page acts before you pick up. Apple ships nothing that listens during a call. On this one point Android is genuinely ahead: a Pixel, and the newest Samsung phones, can warn you mid-conversation.

And whichever of these you turn on, put your real numbers into your contacts. The doctor, the dentist, the pharmacy, the bank. Anyone in your contacts always rings through, and that single habit is what makes the rest of this safe to switch on.

Back to the series, or read how the call goes for the part your phone can't do.