Published

Feb 4, 2026

How to Block or Unblock Someone on WhatsApp

WhatsApp is essential for personal and business messaging, but unwanted messages or calls can be distracting or even stressful. Managing unwanted messages or calls on WhatsApp is simple if you know the proper steps. This guide explains how to block someone, how to unblock someone, and what happens before and after blocking, based on official WhatsApp guidance.

How to Block Someone on WhatsApp

Blocking someone on WhatsApp prevents them from messaging or calling you. You can block contacts either from settings or directly from a chat.

Block Someone with iOS

Based on WhatsApp FAQ(alt text: whatsapp ios block settings):

Block via Settings

Go to
→ Privacy → Blocked Contacts
Tap Add and select the contact you want to block.

Block from the chat info screen

Open the chat with the person
Tap the name at the top
Scroll down and tap Block

Block Someone with Android

Based on WhatsApp FAQ(alt text: whatsapp android block settings):

Block via Settings

Tap
→ Settings →Privacy → Blocked contacts
Tap
, select the person you want to block.

Block from the chat info screen

Open the chat with the person
Tap
→ More → Block > Block.

How to Unblock Someone on WhatsApp

Unblocking restores communication with a contact but does not recover messages sent while blocked.

Unblock Someone with iOS

Method 1

Go to
→ Privacy → Contacts → Blocked.
Find the contact's name→ Swipe left → Tap Unblock.

Method 2

From the chatlist, swipe left on the chat with the sender → Tap More → Unblock contact name /unknown phone number.

Method 3

Open the chat with a contact you have already blocked. Tap the contact name or unknown phone number → Unblock.

Unblock Someone with Android

Method 1

Tap
→ Settings → Privacy → Contacts → Blocked contacts.
Tap the contact name or phone number you want to unblock.

Method 2

Search for the contact or phone number you blocked.
Tap and hold the contact name or phone number.
tap
→> Unblock.

Note: If you unblock someone, you won't receive any messages, calls, or status updates the sender sent you during the time they were blocked.

What Happens When You Block Someone on WhatsApp

Messages & Delivery

Messages from blocked contacts will not be delivered
On their side, messages show as sent (one check) but never delivered (two checks)
You cannot send messages to them until unblocked

Calls

WhatsApp voice and video calls from blocked contacts will not ring
Missed call notifications do not appear

Status, Last Seen & Profile

Blocked contacts cannot see your last seen, online status, status updates, or profile photo changes
You also won’t see their status or last seen

Notifications

WhatsApp does not notify someone when they are blocked
People may suspect they are blocked based on message behavior and hidden updates

What Happens After You Unblock Someone

Messages & Calls

You can send and receive messages normally
Calls (voice/video) can go through

Old Messages

Messages sent while blocked are lost and not delivered

Visibility

Profile photo, last seen, and status updates become visible again

Notifications

WhatsApp does not notify the contact that you have unblocked them

How to Recognize If You Are Blocked

Although WhatsApp does not notify users, some signs may indicate a block:

Messages show only one checkmark
You cannot see their last seen or online status
Profile photo does not update
Calls fail or don’t connect

These are indirect clues and not definitive proof, as privacy settings or network issues can produce similar effects.

Manage WhatsApp Messages More Efficiently With Dealism

Blocking or unblocking someone helps control who can contact you on WhatsApp, but for business users, managing message volume is often the bigger challenge. Dealism AI Sales Agent connects with WhatsApp to handle customer inquiries, automate replies, and engage leads in a natural, brand-consistent way. When you block or unblock a customer in WhatsApp, the status stays fully synced with Dealism, so your contact controls remain consistent across both platforms while you stay focused on high-value conversations.