How to block Viettel calls and messages: A comprehensive guide

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Ngày cập nhật gần nhất: 15/4/2026

Frequently Asked Questions

1.

How can I effectively block calls and messages from Viettel?

To block Viettel calls and messages, register for the service by texting 'DK' to 909 for a fee. Then, use specific texts like 'ONA' for activation or 'Them Phone1 Phone2' to add numbers to your block list.
2.

Is there a way to view the numbers I have blocked on Viettel?

Yes, you can view your blocked numbers by sending 'DSC' to 909. This will provide you with a list of all numbers currently blocked on your account.
3.

How do I cancel the call and message blocking service with Viettel?

To cancel the call and message blocking service, simply text 'HUY' to 909. This will deactivate the service and remove all restrictions on incoming calls and messages.

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