How to block calls and messages on Viettel network from any number.

Encountering nuisance calls and texts? Learn how to block them and regain your peace of mind.

Mobile devices like Android and iPhone offer direct call and message blocking features. But for those without, Viettel provides a solution at just 7,000đ/month.

1. Registering for call and message blocking services.

Before you wish to block numbers, block messages, you need to subscribe to Viettel's network service.

To activate the call blocking, message blocking service of Viettel's network, you need to send the following message:

After you have subscribed to the call blocking, message blocking service, you need to activate that feature to use it.

To activate the call blocking feature, you need to compose the message as follows:

To activate the message blocking feature, compose the message as follows:

2. How to add a phone number to the block list

After successfully subscribing and activating the service, you will receive a notification from Viettel network. Next, proceed to set up the phone numbers to be blocked in the list as follows:

Add the phone number to the block list (Applies to both message and call blocking):

Where: SDT1, SDT2 are the phone numbers you want to block, you can add multiple phone numbers at once, just separate them by a space.

For example:

• ADD 0903999222 send to 909
• ADD 0903999222 0987777333 0875888223 send to 909

Now you have successfully added the phone numbers to the block list. From now on, you will not receive any calls or messages from those phone numbers.

3. How to check the list of blocked phone numbers

To check the list of blocked phone numbers, you need to compose the message as follows:

4. How to remove a phone number from the block list

To remove the phone numbers you no longer want to block, you need to compose the message as follows:

Where: SDT1, SDT2 are the phone numbers you want to remove from the list, you can remove multiple phone numbers at once, just separate them by a space.

For example:

• REMOVE 0903999222 send to 909
• REMOVE 0903999222 0987777333 0875888223 send to 909

If you want to remove all phone numbers from the block list, compose the following message:

5. How to cancel call and message blocking service

To cancel the message and call blocking service of Viettel network, simply compose the following message:

So in this article, Software Tricks has guided you on how to block calls and messages from various networks on Viettel. Wish you success!