The quickest way to unlock Viettel, MobiFone, and VinaPhone SIM cards in just 5 minutes

There are several reasons why you might need to lock your sim such as losing your sim, losing your phone, not wanting to be disturbed, or protecting your personal information when there is a risk of intrusion… In the article below, FPT Shop will suggest the simplest and fastest ways to lock sims from many network providers in the market today like Viettel, MobiFone, VinaPhone.

The fastest and simplest way to lock Viettel sim

Lock Viettel sim at Viettel store

You can go to Viettel transaction stores to lock your sim, the specialists at the center will assist you in completing the sim lock procedure. Before going, please bring the following documents:

• Your sim phone number that you want to lock.
• Citizen ID card or ID card, full name of the sim owner.
• 5 recent contact numbers within 1-3 months.

Call Viettel hotline to lock Viettel sim

Calling Viettel customer care hotline to lock the sim is the fastest way you can do. After connecting with the customer care specialists, provide your own reasons for locking the sim, and present some necessary information to prove that you are the owner of the subscribed number to be locked. After completing the verification procedures, the specialist department will proceed to support you in locking the sim.

Viettel customer care hotline number: 18008098. Please note that the hotline number may change depending on Viettel’s policy, so visit https://vietteltelecom.vn to get accurate and up-to-date information.

Lock Viettel sim online through My Viettel app

If you do not want to contact the hotline or go directly to the transaction offices, you can also lock the sim through Viettel’s application – My Viettel. You can easily download the My Viettel application to your phone via the App Store with an iPhone or via CH Play with an Android phone.

Download link for My Viettel application:

• Download My Viettel application for iPhone.
• Download My Viettel application for Android phone.

When you have the My Viettel app on your phone, proceed to register an account, then follow these steps to lock the sim:

• Tap on the 3 horizontal lines at the top of the app interface, then you click on the account name or avatar.
• Choose Request to block outgoing calls.
• Enter the ID number, security code, and then select Block outgoing calls to complete the sim lock process.

How to permanently lock Viettel sim

With the above methods, you can use them for temporary sim lock cases, but what if you want to permanently lock the sim? 

Currently, Viettel does not have a policy that allows permanent sim lock, you can only cancel the sim if you no longer want to use it. After canceling the sim, all usage packages and sim accounts will be completely erased.

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