How to Block Someone on WhatsApp 2026 — Complete Guide
✓ Updated May 2026. Covers blocking, unblocking, reporting spam, and privacy on iPhone, Android, and WhatsApp Web.
Whether you're dealing with spam, harassment, or just need a break from someone, WhatsApp makes it easy to block contacts. Once blocked, the person cannot message you, call you, or see your profile information. Here's everything you need to know.
What Happens When You Block Someone?
✅ What stops
- Messages — not delivered to you
- Calls — won't ring your phone
- Profile photo — hidden from them
- Last seen & online — no longer visible
- Status updates — hidden
- Read receipts — no longer sent
⚠️ What continues
- Group chats — if you share one, you still see their messages
- Previous chat history — not deleted unless you manually delete the chat
- Block can be reversed anytime by unblocking
How to Block Someone (Step by Step)
📱 Android
- Open WhatsApp
- Go to chat → tap contact name
- Scroll to "Block [name]"
- Confirm
📱 iPhone
- Open WhatsApp
- Go to chat → tap contact name
- Tap "Block [name]"
- Confirm
💻 WhatsApp Web
- Open the chat
- Click the contact name
- Click "Block [name]"
- Confirm
How to Block Unknown Numbers
You don't need the person in your contacts to block them. Go to WhatsApp Settings → Privacy → Blocked contacts → "Add new" and enter the phone number (with country code). This is useful for blocking spam numbers or someone who contacted you first.
How to Unblock Someone
Go to Settings → Privacy → Blocked contacts. Tap the contact you want to unblock, then tap "Unblock." Once unblocked, you will start receiving messages from them again, and your profile information becomes visible. Your previous chat history will still be there (if you didn't delete it).
Reporting Spam & Abuse
When blocking someone, WhatsApp gives you the option to "Report contact." This sends their last 5 messages to WhatsApp for review. Reporting helps WhatsApp identify and ban spam accounts. You can also report without blocking: open the chat → tap the contact name → "Report contact."
Privacy Settings to Prevent Unwanted Messages
Beyond blocking, you can adjust your privacy settings to reduce unwanted contact: set "Last Seen & Online" to "My Contacts" or "Nobody," set profile photo to "My Contacts," and disable read receipts. These settings are in WhatsApp Settings → Privacy.
Common Questions
Can a blocked person still see my profile picture?
No — once you block someone, they cannot see your profile photo, status, last seen, or online status. Your messages will not reach them, and theirs will not reach you.
Will the person know I blocked them?
WhatsApp does not send a notification when you block someone. However, they may deduce it if your profile photo disappears and messages show only one check mark for an extended period.
Can I block someone on WhatsApp without them knowing?
Yes — WhatsApp does not notify the person when you block them. It appears to them as if your account is inactive or they've been ignored. There's no "you've been blocked" message.
What happens to group chats when I block someone?
If you're in the same group, you will still see their messages in the group (blocking only affects one-on-one chats). You will not receive private messages or calls from them.
Can I block unknown numbers on WhatsApp?
Yes — you can block any contact, even if they're not in your address book. Go to Settings → Privacy → Blocked contacts → Add a new block, then enter the number manually.