In this article, 3gwifi.net will answer the question why you should switch to 4G SIM and how Vietnamese users can switch to 4G SIM.

This article will answer the question why you should switch to 4G SIM and how Vietnamese users can switch to use 4G SIM.
What is 4G SIM for?
There is a lot of information currently circulating about Vietnamese network operators allowing users to switch to using 4G SIM cards. Faced with this, many people are still hesitant because they do not understand the reasons and purposes of switching SIM cards. Furthermore, how will this affect the phone numbers they have been using for so long?

4G networks are a significant improvement over 3G, which is currently the most widely used. Therefore, 4G is used along with components to connect your device with the SIM network provider for changes. That is also the reason why some network operators advise their users to switch to using 4G SIM cards. Once you use a 4G SIM, users can choose to use 4G or continue to use 3G services as before.
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Vinaphone 4G SIM
However, there are a few important notes: switching to a 4G SIM does not mean you can use 4G network services, and this is because 4G is currently only being tested in Vietnam. Currently, no network operator in Vietnam has been granted official licenses to develop 4G networks.

According to the latest information provided by the Radio Frequency Department, there are many reasons why the 4G service may not be widely developed in Vietnam until 2018. Therefore, users can choose to switch to a 4G SIM from now on or can still use their old SIM to switch to a 4G SIM if they deem it important.
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For those who are switching to 4G SIM now, they will be able to test the 4G network if the carrier proceeds with coverage in their area. The average transmission speed of 4G networks currently in testing is from 40 to 80 MB/s, nearly 7 times higher than the current 3G package.
How to switch to a 4G SIM?
The definite difference of carriers regarding 4G SIMs, Vinaphone does not force users to switch to 4G SIM like Viettel, but for Viettel and Mobi carriers, users must switch to 4G SIM to use 4G services.

Mobifone 4G SIM
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It is not yet clear exactly when Mobifone 4G SIMs will be allowed for use. For Viettel, they have started allowing users to register for the conversion to 4G SIM. However, during the first week from 05/12/2016, the 4G SIM exchange was only applied to prepaid SIMs. Starting from the following week, Viettel users can easily convert from old SIMs to 4G SIMs, regardless of whether they are prepaid or postpaid.

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To convert the SIM, users only need to bring their SIM along with their ID card to Viettel's transaction points. There, Viettel customer care staff will guide you through the SIM exchange procedure. The cost to switch to a 4G SIM is 25,000 VND, equivalent to the cost of a normal SIM exchange offered by this carrier to users.

Attention: You must be the owner of the subscription and must complete the procedure in person by signing the form to change the SIM service.
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