What is Viettel's CTKM337? How to cancel it effectively?

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Ngày cập nhật gần nhất: 15/4/2026

After using Viettel SIM for a while, some users are charged 70,000 VND/month without clear reasons. Through practical investigation, it's known that this is the cost of using the CTKM337 package applicable to privileged Viettel subscribers. To understand more about the CTKM337 package and how to cancel the subscription when not needed, you can find the answers in the following article.

For new Viettel SIM users committing to a minimum 12-month service, the subscriber will be enrolled in the CTKM337 package with 1000 minutes of on-net calls per month.

What is Viettel's CTKM337, monthly benefits, and cancellation procedure

For more information about the ongoing Viettel CTKM337 package, including registration and cancellation, refer to the article 'What is CTKM337 Viettel? How to cancel?' by Mytour.

What is CTKM337 Viettel? How to cancel?

1. What is Viettel's CTKM337 package?

Viettel's CTKM337 is a promotional call minutes package for subscribers newly joining the network. In reality, this package is attached upon subscription and requires a minimum 12-month commitment.

* Benefits of Viettel's CTKM337 package

- With Viettel's CTKM337 package, you'll enjoy 1000 minutes of on-net calls per month (equivalent to over 30 minutes of on-net calls per day) at a cost of 70,000 VND/month.
- Viettel's CTKM337 package features automatic monthly renewal, so you'll be charged automatically whether you use this package or not.

Text KTLL send 195

2. How to cancel CTKM337 Viettel

In reality, after a period of subscription, many individuals wish to cancel Viettel's CTKM337 package due to lack of usage or a desire to switch to packages offering SMS and data benefits. However, as previously committed, to cancel Viettel's CTKM337 package, Viettel subscribers must meet the following conditions:

- The Viettel subscriber has fulfilled the minimum commitment period for the package (12 months).
- The SIM card is functioning normally, not blocked in both directions, and has no outstanding monthly fees.

If you have checked and met the above conditions, you can bring your ID card to a Viettel store, fill out the CTKM337 Viettel cancellation form, and ask Viettel staff to complete the cancellation process.

For more detailed information about Viettel's CTKM337 package or other Viettel voice promotion packages, please contact the hotline (18008098/198) or directly visit the nearest Viettel stores.

Above are the details of the Viettel CTKM337 package concept and how to cancel Viettel's CTKM337 package when not in use. Hopefully, the information in this article will help you understand more about Viettel's promotional package attached to SIM cards when subscribing and consider, make decisions on the most suitable package for your usage needs.

Alongside Viettel's CTKM337 package, if your subscriber receives instructions to type 'Dongy' and send 195 from Viettel but you do not understand the purpose, fees when typing messages, then the article 'What is Dongy send 195 Viettel?' by Mytour will help you find the answer.

Read more: What is Dongy send 195 Viettel?

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