Key Considerations When Switching to Viettel 4G SIM You Should Know

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Ngày cập nhật gần nhất: 15/4/2026

Currently, switching to Viettel 4G SIM is a breeze. However, there are some key considerations you should be aware of before heading to Viettel's transaction points nationwide. Hopefully, through these key considerations, you'll grasp the necessary information you want to explore.

Viettel has begun deploying 4G network speed in some areas. We can easily register for Viettel 4G by switching to a 4G SIM. However, Mytour.vn has received numerous inquiries about the registration process and key considerations when switching to Viettel 4G SIM. Let's delve into this with Mytour.vn.

Key Considerations When Switching to Viettel 4G SIM You Should Know

We have key considerations for switching to Viettel 4G SIM that you need to know, such as:

1. Procedures and Necessary Documents for Switching to Viettel 4G SIM

- You need to prepare the currently used SIM and the ID card registered with the SIM.

- Your subscription must be prepaid and have been active for at least 60 days from December 27, 2016.

- For student SIM subscriptions, you need to present documents confirming your study status.

- Additionally, you can use any documents previously used to register SIM ownership for authenticated subscriptions.

2. SIM Received after Successfully Switching to Viettel 4G SIM:

The 4G SIM you receive will be the latest type currently used, available in Mini, Micro, and Nano sizes, compatible with most modern smartphones. This allows you to easily cut the SIM to fit your device.

3. Can 3G/2G be Used after Switching to Viettel 4G SIM:

This is entirely possible after you have successfully switched to Viettel 4G SIM at Viettel's transaction points.

After successfully switching to Viettel 4G SIM and installing it on your device, you will receive a message from hotline 155 notifying you of the service and package changes.

4. Does Switching to Viettel 4G SIM Affect Current Packages and Promotions:

This is a question many people are concerned about and have sent to Mytour.vn for clarification. To avoid losing all services and accounts on your subscriber device, you need to have:

- Your subscription and SIM must have been registered under your name.

- When switching to Viettel 4G SIM, you need to provide at least 3 recent contact numbers.

- For student subscriptions, to switch to Viettel 4G SIM, you must present identification documents, student ID cards. Otherwise, your subscription will automatically switch to the Tomato package, resulting in account deduction.

- Additionally, during the process of switching to Viettel 4G SIM, don't forget to ask the transaction staff for advice and clarification on any queries.

Here are some key points to know when switching to Viettel 4G SIM, helping you quickly switch your device to 4G and use it efficiently, while avoiding service, package, and account loss that many people are currently concerned about.

https://Mytour.vn/nhung-luu-y-khi-doi-sim-4g-viettel-12168n.aspx
Furthermore, if you're wondering whether your device supports 4G, refer to the article on checking if your phone supports 4G to determine if your device can use 4G, and then plan to switch to Viettel 4G SIM.

Frequently Asked Questions

What are the necessary documents for switching to a Viettel 4G SIM?

To switch to a Viettel 4G SIM, you need to provide your current SIM and your registered ID card. Additionally, your subscription must be prepaid and active for at least 60 days.

Will I be able to use my 3G or 2G service after switching to Viettel 4G SIM?

Yes, you can still use your 3G or 2G service after switching to a Viettel 4G SIM. Once switched, you will receive a notification about service changes from the hotline.

Does switching to a Viettel 4G SIM affect my current service packages?

Switching to a Viettel 4G SIM may affect your current packages if your subscription isn't registered under your name. Make sure to provide recent contact numbers to avoid any issues.

What sizes are available for the new Viettel 4G SIM?

The new Viettel 4G SIM comes in Mini, Micro, and Nano sizes, making it compatible with most modern smartphones. You can easily cut the SIM to fit your device.

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