Viettel's way to register for 4G to receive high-speed data is very simple, anyone can do it. If you are still wondering about the syntax to register for 4G Viettel, let me guide you in detail! Not only will you receive high-speed 4G data, but you will also be given extra minutes for internal and external calls, along with many attractive utilities at the cheapest cost.

You can choose to register for a cheap Viettel 4G network from only 5K, 50K, 90K, 120K, etc. to own a super attractive offer up to 30GB/month, 60GB/month, 100GB/month, 120GB/month, …

The support syntax you need to know when registering for 4G of Viettel
The above 4G Viettel packages have an auto-renew feature. At the end of the package usage period, the system will automatically deduct the package renewal fee (Except for WC1 and WC2) packages.
To check the remaining Viettel high-speed 4G capacity, compose KTTK and send it to 191 (free).
To unsubscribe from Viettel's 4G package, send HUY to 191 or HUY to send 191 (free).