What is the difference between silencing unknown callers and blocking a specific number? What is the difference between silencing unknown callers and blocking a specific number?

Blocking a specific number prevents a particular number from reaching the phone entirely. Silence Unknown Callers automatically silences all numbers not saved in contacts and sends them to voicemail, which may mean missing important calls from doctors, delivery services, or job interviews.

What's new in iOS 26 regarding call blocking?

iOS 26 has expanded call screening functionality. There is now an option to ask unknown callers for their name and reason for calling. The iPhone intercepts an incoming call and requests the person's name and a short reason for calling. The information is transcribed to text and relayed to the user, who can then decide whether to ask for more information, accept the call, or decline.

How many numbers can be blocked?

iOS doesn't set an official limit on blocked numbers — hundreds of numbers can be blocked. To review the blocked list: Settings → Privacy & Security → Blocked Contacts, or directly from Settings → Apps → Phone → Blocked Contacts.

Does the blocked person know they've been blocked?

No. The caller or sender is not notified that the call or message was blocked. Their calls go directly to voicemail without any notification, and they may assume the phone is off or out of range.

Can a blocked person still send text messages?

When a phone number is blocked: voicemail messages won't produce notifications, and messages that are sent or received won't be delivered. However, the blocked person won't be aware of this — messages will appear to have been sent normally from their side.

How to Block Calls on iPhone — A Comprehensive Guide for iOS 26 and iOS 18 in 2026

How to Block Calls on iPhone — Complete 2026 Guide

When a phone number or contact is blocked on iPhone: calls from that number go straight to voicemail without the phone ringing or vibrating, text messages are blocked, FaceTime calls are blocked, and the blocked contact doesn't get a notification that the call or message was blocked.

Method 1: Block a Specific Number from Recent Calls

Open the Phone app → tap Recents → find the number to block → tap the info (i) icon next to it → scroll down → tap Block Caller (iOS 18) or Block Contact (iOS 26) → tap Block Contact to confirm.

Faster alternative: In the Recents list, swipe left on the number to block → three icons appear: an orange hand, a blue clock, and a red trash can → tap the orange hand to block the number directly from the recent call log.

Method 2: Block a Number from Contacts

Open the Phone app → tap Contacts → tap the desired contact → scroll down → tap Block Contact.

Method 3: Block a Number Directly from Settings

Open Settings → Privacy & Security → Blocked Contacts → Add Blocked Contact → select a contact or enter the number manually → Block Contact.

Method 4: Silence Unknown Callers

When this feature is enabled, incoming calls from numbers not saved in contacts are automatically silenced and sent to voicemail. Silenced calls don't ring or show a notification; they only appear in the Recents list.

On iOS 18: Settings → Apps → Phone → Silence Unknown Callers → toggle on.

On iOS 26: Settings → Apps → Phone → Screen Unknown Callers → select Silence to silence unknown numbers and send them to voicemail.

Method 5: Call Screening — New in iOS 26

Settings → Apps → Phone → Screen Unknown Callers → select Ask Reason for Calling. With this option on, calls from unknown numbers are intercepted automatically and the caller is asked to state their name and reason for calling. The response is transcribed into text and shown, then a decision can be made whether to answer or not.

With Call Screening enabled, spam calls stop triggering ringtones and notifications. Legitimate calls from unknown numbers still appear, but only after the caller provides context.

Method 6: Call Filtering — iOS 26

Settings → Apps → Phone → Call Filtering → enable Unknown Callers: missed calls and voicemails from unsaved numbers are moved to a separate list. Enable Spam: calls identified as spam or fraud by the carrier are silenced, sent to voicemail, and moved to the Spam list.

Method 7: Focus Mode to Block Unknown Numbers

Settings → Focus → select Do Not Disturb → Allow Notifications → People → Allow Calls From → choose All Contacts or Contacts Only. This way, only calls from people saved in contacts will come through. This mode can be scheduled automatically during sleep or work hours.

Method 8: Third-Party Blocking Apps

iPhone offers a Call Blocking & Identification feature that allows additional apps to stop spam calls. Settings → Apps → Phone → Call Blocking & Identification.

Reliable apps available on the App Store include: Truecaller (large caller identification database), RoboKiller (blocks robocalls), Hiya (caller ID and threat blocking).

How to Unblock a Number

Settings → Privacy & Security → Blocked Contacts → Edit → tap the delete button next to the contact to unblock → Unblock.