How to Block Someone on Viber: A Complete Guide

Blocking someone on Viber is one of those features that sounds simple but works slightly differently depending on your device, operating system, and whether you're dealing with a contact, a group member, or an unknown number. Here's everything you need to know before you tap that block button.

What Blocking on Viber Actually Does

When you block someone on Viber, several things happen simultaneously:

• They can no longer send you messages, calls, or media through Viber
• Their existing messages remain visible in your chat history (unless you delete them)
• They will not receive a notification that they've been blocked
• Their messages will appear to send on their end, but you'll never receive them
• You will no longer see their "last seen" status or profile photo updates

One important distinction: blocking is different from hiding a chat. Hiding removes a conversation from your visible list but doesn't stop the person from contacting you. Blocking is the more definitive action.

How to Block Someone on Viber (Android)

On most Android devices running a current version of Viber:

1. Open the Viber app and navigate to your chats
2. Find the conversation with the person you want to block
3. Tap and hold the conversation to bring up options
4. Select "More" or the three-dot menu icon
5. Tap "Block Contact"

Alternatively, you can block from within an open chat:

1. Open the conversation
2. Tap the contact's name or number at the top of the screen
3. Scroll down to find "Block Contact"
4. Confirm when prompted

How to Block Someone on Viber (iPhone/iOS)

The steps on iOS are similar but the navigation labels can differ slightly:

1. Open Viber and go to Chats
2. Swipe left on the conversation you want to manage
3. Tap "More" and then select "Block"

Or from inside the chat:

1. Tap the person's name at the top of the conversation
2. Scroll to the bottom of their contact info
3. Tap "Block This Caller"
4. Confirm your choice

Blocking Someone You Haven't Chatted With

If you've received a call or message from an unknown number and want to block without opening the conversation:

• Go to Recents (in the calls tab)
• Tap the info icon (ⓘ) next to the number
• Select "Block This Caller"

This is particularly useful for dealing with spam calls, which Viber does receive despite its filtering tools.

How to Block Someone in a Viber Group

Blocking a group member is handled separately from group management. Blocking someone in a group doesn't remove them from the group — it only prevents direct personal messages and calls between you two.

To block a group member:

1. Open the group chat
2. Tap the group name at the top
3. Find the member in the member list
4. Tap their name, then select "Block"

If you want to avoid their messages entirely, you may need to also leave the group or ask an admin to remove them.

Managing Your Blocked List

You can review and unblock people at any time:

1. Go to More (the three-dot or hamburger menu)
2. Tap Settings
3. Select Privacy
4. Tap Blocked Contacts

From here you'll see everyone you've blocked and can remove any of them from the list. Unblocking someone restores their ability to contact you, but does not automatically restore any messages that were sent during the block period — those are gone.

What Happens to Calls When You Block Someone 📵

Blocked contacts who try to call you on Viber will hear a standard ringing tone on their end — Viber doesn't signal to the caller that they've been blocked. From your side, the call simply never appears. This behavior is consistent across both Android and iOS versions of the app.

Key Variables That Affect Your Experience

The blocking process sounds uniform, but a few factors can lead to different outcomes depending on your setup:

When Blocking Might Not Be Enough 🔒

If someone is contacting you through multiple channels — regular SMS, other apps, or via group chats — blocking them on Viber handles only the Viber-specific communication. It won't prevent them from seeing messages you post in shared groups, and it won't stop them from contacting mutual contacts to reach you indirectly.

In cases involving harassment, Viber also has a report function accessible from the same contact info screen. Reporting flags the account to Viber's moderation team independently of blocking.

The Nuance in "Completely Blocked"

Whether blocking on Viber fully meets your needs depends on how you use the app. Someone who primarily uses Viber for one-on-one calls has a straightforward experience — block and done. Someone embedded in multiple shared group chats with the person they want to block will find the situation more layered, because group chat participation isn't governed by the block function.

Your specific combination of how many groups you share, whether the person is a saved contact or unknown number, and which platform you're using all shape what "blocking" actually looks like in practice.