Buzz
Greetings to all, I'm a student using Viettel's student sim and often receive advertising messages from Viettel informing about promotions from short code 199. Almost every day, it becomes quite annoying and I hardly care about these programs. On the Mobifone network, I noticed it's possible to block Mobifone's spam messages. So, how can I block Viettel's advertising messages? Thank you.
Answer 1:
To block Viettel's advertising messages, compose a message with the syntax: TC send 199
https://Mytour.vn/how-to-block-viettel-advertising-messages-qa-2586n.aspx
However, using this method, you won't receive any promotional messages, including top-up promotions from Viettel. If you wish to subscribe to services again, compose a message with the syntax DK send 199.
