Posted on 09/11/26 03:13 pm
When you block someone on Viber, their messages and calls stop reaching you and are not saved for later. Here is how blocking works and how to undo it.
Blocking a contact on Viber stops their messages and calls from arriving on your device. Messages sent while they are blocked are not stored and delivered later, so unblocking does not bring them back. The other person is not sent a notification that you blocked them.
| When someone is blocked | What happens |
|---|---|
| They send you a message | It does not reach you and is not delivered later |
| They call you on Viber | The call does not come through |
| They are in a group with you | Group messages may still be visible, because blocking mainly affects one-to-one contact |
| You unblock them | New messages arrive again; old ones stay lost |
Menu names can change slightly between Android and iPhone versions, but the block list is always under privacy settings.
None of these proves a block on its own: they also happen when someone uninstalls Viber, loses signal or hides their status in privacy settings.
Viber can filter messages from people who are not in your contacts into a separate folder, and you can report spam from the chat menu. Reporting helps Viber remove accounts that send bulk messages, which is better than blocking spammers one at a time.
If one person keeps contacting you from new numbers, blocking each one becomes tiring. Moving your Viber account to a new number keeps your chats while dropping the old number. See how to change your number on Viber.
They can see messages sent before the block. Nothing new reaches them from you while they are blocked, and nothing from them reaches you.
No. Messages sent during the block are not delivered later.
No, Viber does not send a notification.
Yes, from the block list in privacy settings or from the chat with that number.
Related: change your Viber number · Viber registration problems · block spam texts.
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