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# How to Block Someone on Viber: Complete Step-by-Step Guide
- URL: https://techbookshelf.com/block-someone-viber/
- Published: 2026-11-06T05:40:00.000Z
- Updated: 2026-11-06T05:40:01.000Z
- Description: This guide shows how to block someone on Viber across devices, stopping unwanted messages and calls to protect your privacy.
- Author: Md Astafar Hossain
- Tags: Messaging Apps, Privacy, Mobile Apps, Viber

This article explains how to block someone on Viber with clear, platform-specific instructions and details on what blocking means for communication and privacy.

Blocking a contact on Viber stops unwanted messages and calls from reaching the user. The process differs slightly between Android, iPhone, and desktop versions, but the goal is always to regain control over who can interact. Understanding what happens after blocking helps set expectations, such as whether blocked contacts can still see profile changes or send messages.

Follow the step-by-step guide to block a contact efficiently and learn how to handle situations like blocking users who are not in contacts or managing message filters without full blocking.

## Before you start: What is needed to block someone on Viber

Blocking a contact on Viber requires an active Viber account on the device where the action will take place. This can be a smartphone running Android or iOS, or a PC using the Viber desktop app. The blocking process and interface differ slightly depending on the platform, so it is important to perform blocking on each device separately if Viber is used on multiple devices.

The contact or phone number intended for blocking must be known and either saved in contacts or visible in recent chats or calls. Viber does not allow blocking unknown numbers directly without interaction. Blocking affects several communication channels: it prevents calls, messages, and status updates from the blocked contact from reaching the user.

Users should be aware that blocking is device-specific. For example, blocking a contact on an Android phone does not automatically block them on the desktop app. This distinction means that blocking needs to be repeated on each platform where privacy control is desired.

1. Open Viber on the intended device and ensure the account is active; the main chat window should be visible.
2. Locate the contact or phone number in contacts, chat list, or call history.
3. Access the contact's profile or chat settings; this is typically done by tapping the contact's name or info icon.
4. Find the block option, usually labeled as "Block Contact" or "Block Number," and select it.
5. Confirm the block when prompted; the contact will no longer be able to call, message, or see status updates on that device.

**Tip:** Check each device separately if Viber is installed on multiple devices to ensure consistent blocking.

## How to block someone on Viber Android

1. Open the Viber app on the Android device. The main screen shows recent chats and contacts.
2. Navigate to the chat with the person to block or find them in the contact list. Tap on their name or chat header to open the contact info screen.
3. Scroll down in the contact info until the option labeled **Block contact** appears. This option is usually near the bottom of the screen.
4. Tap **Block contact**. A confirmation prompt will appear asking to confirm the action.
5. Confirm the block by selecting **Block** in the prompt. Once confirmed, calls and messages from this contact will be blocked immediately.

The blocked contact will no longer be able to send messages or call through Viber. The user will not receive notifications from the blocked contact, and the contact will be removed from the chat list if no recent messages remain.

**Tip:** Blocking is device-specific on Viber; repeat these steps on each Android device with Viber where blocking is desired.

## How to block someone on Viber iPhone

1. Launch the Viber app and navigate to the chat with the person to block or tap the **Contacts** tab at the bottom of the screen. The chat list or contacts will appear.
2. Tap the contact's name or profile picture at the top of the chat or in the contacts list to open their profile page. This page displays options specific to that contact.
3. Scroll down on the profile page and select **Block this contact**. A confirmation prompt will appear, clearly stating the action's consequences.
4. Confirm the block by tapping **Block** in the prompt. The contact is now blocked, preventing them from sending messages, calling, or seeing status updates.

Blocking on iPhone visually differs from Android by the location of the block option within the contact's profile and the use of iOS-style buttons and prompts. Unlike Android, where options may appear in a menu accessed from three dots, the iPhone interface places blocking directly within the profile page for quicker access.

**Tip:** Blocking needs to be done on each device separately to ensure full communication restrictions across platforms.

## How to block someone on Viber PC and desktop

Blocking a contact on Viber’s desktop or PC app requires navigating the interface differently from mobile devices but achieves the same result. The desktop app offers straightforward options to block contacts directly from the chat window or contact list.

![How to block someone on Viber PC and desktop – how to block someone on Viber](https://techbookshelf.com/content/images/2026/11/block-someone-viber-2.webp)

1. Open the Viber desktop app and locate the contact or chat to block. The chat list appears on the left side of the window.
2. Click the contact’s name at the top of the chat window to open the contact info pane. Alternatively, right-click the contact name or chat in the chat list to access a context menu.
3. In the contact info pane or context menu, select the **Block contact** option. A confirmation prompt will appear.
4. Confirm the block by clicking **Block** or **Yes**. The contact will be blocked, and new messages or calls from them will be prevented.

The desktop app’s blocking feature does not offer granular controls such as blocking calls but not messages, which are available on mobile. Also, blocking on desktop must be done on each device separately to maintain consistency.

**Tip:** If the contact is not visible in your chat list, use the search bar to find them before following the blocking steps.

## What happens if you block someone on Viber?

Blocking a contact on Viber immediately stops all direct communication from that user. Messages and calls from the blocked contact will not be delivered and remain invisible. For example, if a blocked user sends a message, it will appear as sent on their end but never reach the recipient's device or notification center.

Blocked users also lose access to the blocker’s online status and any status updates. They will not see when the blocker is online or any changes to profile status messages. This helps maintain privacy by limiting what blocked contacts can view.

No notification or alert is sent to the blocked user, so the block remains discreet. The blocked person will not receive any indication they've been blocked, only that their messages and calls do not get through.

Blocking on Viber is one-way. The person who blocks will not receive messages or calls from the blocked user, but the blocked contact can still see the blocker's messages unless they also block them. This unilateral control supports selective communication management without mutual restrictions.

## Can you block someone on Viber if they are not in your contacts?

Blocking a user who is not saved as a contact on Viber is possible only when they have sent a message or called. When an unknown number messages the account, a conversation thread appears in the chat list. From this thread, blocking the sender is straightforward. However, if the unknown user has not initiated contact, there is no direct method to block them preemptively.

To block an unknown sender from the message thread, open the chat, tap the contact or number at the top to access their profile, then select the *Block contact* option. Once blocked, the messages and calls from that number will be prevented, and the chat thread will reflect the block status. This action works similarly for both phone numbers and Viber users not saved in contacts.

Blocking unknown users has limitations. It does not automatically report spam or abuse to Viber. Reporting is a separate function found on the same profile screen, usually labeled *Report spam* or *Report*. Use it if the messages are unwanted commercial content or harassing. Blocking stops communication but does not initiate investigation, while reporting alerts Viber to potential violations.

1. Open the chat thread with the unknown sender. The sender’s number or name appears at the top.
2. Tap the contact name or number to open their profile screen.
3. Select *Block contact*. A confirmation message appears.
4. Confirm the block. The chat will show that the contact is blocked, and no new messages or calls will come through.

**Tip:** If the unknown sender is spamming, use both *Block contact* and *Report spam* to stop messages and notify Viber.

## How to block messages on Viber without blocking the contact

Viber offers alternatives to full blocking for users who want to limit interruptions without severing communication completely. Muting a chat disables notifications for messages from that contact but still allows messages and calls to come through silently. This is useful when the contact’s messages are frequent or unwanted, but full blocking is too drastic.

To mute notifications on Viber, open the chat with the contact, tap the contact's name or number at the top to open chat settings, then select *Mute Notifications*. Choose the duration (e.g., 1 hour, 8 hours, 1 week, or indefinitely). When successful, the chat will show a muted bell icon.

Another option is the *Ignore Messages* feature, available from the chat info screen. This moves the conversation to a separate section and disables notifications but does not block messages or calls. It is handy for filtering less important conversations without notifying the sender.

These alternatives do not prevent the contact from calling or seeing online status, unlike blocking. Muting and ignoring are reversible and appropriate when a contact should not be cut off but should not disturb notifications.

| Feature         | Messages Received | Calls Received | Notifications | Contact Notified | Visibility of Status |
| --------------- | ----------------- | -------------- | ------------- | ---------------- | -------------------- |
| Block           | No                | No             | No            | No               | No                   |
| Mute            | Yes               | Yes            | No            | No               | Yes                  |
| Ignore Messages | Yes               | Yes            | No            | No               | Yes                  |

**Tip:** Use muting for temporary quiet and ignoring for longer-term message filtering without full blocking.

## Troubleshooting: What to do if blocking on Viber isn’t working

If blocking on Viber fails or behaves unexpectedly, start by checking for app updates. An outdated version may lack recent bug fixes related to blocking. After updating, restart the app or the entire device to ensure changes take effect.

![Troubleshooting: What to do if blocking on Viber isn’t working – how to block someone on Viber](https://techbookshelf.com/content/images/2026/11/block-someone-viber-3.webp)

Blocking is device-specific on Viber. Verify that the contact is blocked on every device where Viber is used. A user blocked on an Android phone but not on the desktop app can still message or call from the unblocked device.

If blocking options are missing or malfunctioning, clear the app cache via device settings or uninstall and reinstall Viber. This often resolves interface glitches affecting block controls.

Some users report that blocked contacts still appear online temporarily. This happens due to syncing delays between devices and Viber servers. Allow some time for the block to propagate fully before concluding it is not working.

1. Check the app store for Viber updates and install any available. Success: blocking features appear and function correctly.
2. Restart the device and relaunch Viber. Success: the app runs smoothly without blocking errors.
3. Confirm the contact is blocked on all devices using Viber. Success: the blocked user cannot send messages or calls from any device.
4. Clear Viber cache from device settings or uninstall and reinstall the app if blocking options are missing. Success: block settings restore and function normally.
5. Wait up to several minutes if the blocked contact still appears online, as this may resolve after server synchronization.

## Frequently asked questions

### Can i block someone on viber?

Yes, blocking someone on Viber is possible and straightforward. Users can block contacts directly through the chat or contact info screens on Android, iPhone, and desktop versions. Blocking stops unwanted messages and calls from the blocked user.

### What happens when you block someone on viber?

When someone is blocked on Viber, they cannot send messages or place calls to the blocker. The blocked contact’s messages will not be delivered, and calls will not ring through. However, the block does not notify the other person explicitly.

### How to block viber number?

To block a Viber number, open the chat with the contact or the number you want to block. On Android and iPhone, tap the contact's name or number at the top, scroll to find "Block Contact," and confirm. On desktop, right-click the contact and select "Block this contact."

### How long does it take for blocking someone on Viber to take effect?

Blocking takes effect immediately after confirmation. Messages and calls from the blocked contact will be prevented as soon as the block is active without delay.

### If I block someone on Viber will they know?

Blocked contacts do not receive a notification about being blocked. They may notice that their messages are not delivered or calls do not connect, but Viber does not explicitly inform them of the block.

## What This Guide Does Not Cover and When to Seek Other Solutions

Blocking on Viber is specific to each device. Blocking a contact on an Android phone does not automatically block them on the iPhone or desktop app logged into the same account. Each device requires blocking the contact individually to ensure consistent results.

This guide does not address advanced [privacy settings](https://techbookshelf.com/master-viber-privacy-settings/), account deletion, or dealing with spam beyond blocking. Users experiencing harassment or serious security issues should consider contacting Viber support directly or exploring additional security measures such as changing privacy preferences or using a different communication platform.

Blocking only prevents messages and calls from the blocked contact. It does not stop them from seeing public profile information or status updates if privacy settings allow. For complete invisibility, adjusting privacy settings or deleting the contact may be necessary.

## Next Step: Verify Blocking Across All Devices

After blocking a contact on one device, verify the block status on all other devices where the Viber account is active. Repeat the blocking process individually on each device if necessary to maintain consistent communication control and privacy.

**See also:** [How to Block Someone on Kik: A Clear Step-by-Step Guide](https://techbookshelf.com/p/) · [How to Block Someone on Mastodon: A Clear Step-by-Step Guide](https://techbookshelf.com/p/) · [How to Block Someone on Hinge: A Step-by-Step Guide](https://techbookshelf.com/p/) · [How to Block Someone on Tinder: A Clear Step-by-Step Guide](https://techbookshelf.com/p/)